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Home My WebLink AboutSWPPP Manual Recvd 1/6/17 Erosion & Sedimentation Control / Storm Water Pollution Prevention Manual The Heritage at 1, Cutch(l ue ° � a°p��Board g Condominium Development SCTM # 100-102-01-33.3 VHB Project Number 29305.00 Owner/Applicant: The Heritage at Cutchogue, LLC 1721-D North Ocean Avenue Medford, NY 11763 Consultant: VHB Engineering, Surveying &Landscape Architecture, P.C. Angelo Laino, PE, Senior Project Engineer 100 Motor Parkway, Suite 135 Hauppauge, NY 11787 (631) 787-3400 P:\2930500 Heritage w Table of Contents Culchogue\reports\S W PPP\S W PPP\S W P PP Manua12 doc Table of Contents Introduction and Instruction to Owner/Operator................................................................1 INotice of Intent(NOI)Form.................................................................................................4 IIProject Figures.....................................................................................................................5 IIIProject Description.............................................................................................................6 SiteLocation................................................................................................................6 ExistingConditions.....................................................................................................7 ProposedProject..........................................................................................................8 General Storm Water Management.............................................................................8 Permanent Stabilization and Landscaping...................................................................9 ProjectMaterials..........................................................................................................9 Non-Industrial Discharges...........................................................................................9 IV Construction Schedule and Sequence.............................................................................11 GeneralProject Phasing............................................................................................11 SitePreparation Stage................................................................................................12 ConstructionStage ....................................................................................................12 Final Grading and Stabilization Phase.......................................................................12 V Spill Prevention Plan and Response Procedures.............................................................14 Material Management Practices................................................................................14 Product-Specific Practices.........................................................................................15 Spill Control/Notification Practices...........................................................................16 VI Required Erosion and Sedimentation Control...............................................................19 Erosion and Sedimentation Controls.........................................................................19 Temporary Erosion Control Practices.......................................................................20 Additional Erosion Control Measures(If Applicable) ..............................................22 Permanent Erosion Control Measures.......................................................................25 VII Inspections,Maintenance and Project Documentation...............................................28 Inspections.................................................................................................................28 Maintenance..............................................................................................................29 Documentation..........................................................................................................30 Cutcho P:\29305.00 Heritage ii Table of Contents Cutchogue\reports\SW PPP\S W PPP\SWP PP Man-12.doc VIII Project Storm Water Management Practices.............................................................31 5-Step Storm Water Site Planning Process................................................................31 WaterQuality Controls..............................................................................................33 IXProject Termination.........................................................................................................36 Attachments............................................................................................................................................... Attachment A—SPDES General Permit for Storm Water Discharges GP-0-15-002 .............A-1 Attachment B—Approved Site Plans......................................................................................B-1 AttachmentC—Soils Map.....................................................................................................C-1 Attachment D—New York Natural Heritage Program Coordination...................................... D-1 Attachment E—Storm Drainage Calculations........................................................................E-1 Attachment F—Maintenance Agreements.............................................................................F-1 Attachment G—Operations&Maintenance Manual.............................................................G-1 Forms Certification of Project Construction Contractors Notice of Intent Blank Notice of Intent MS4 Acceptance Form Blank MS4 Acceptance Form Spill Response Procedure Hazardous Waste/Oil Spill Report Emergency Response Equipment Inventory Emergency Notification Phone Numbers Pre-construction Site Assessment Checklist Construction Duration Inspections Monthly Summary of Site Inspection Activities Notice of Termination Blank Notice of Termination Cutcho P:\29305.00 Heritage iii Table of Contents Cutchogue\reports\SW PPP\S W PPP\SWP PP Manu 12.doc Introduction and Instruction to Owner/Operator On behalf of the Owner/Operator,this Erosion and Sedimentation Control/Storm Water Pollution Prevention Plan has been developed for the project,as required under New York's State Pollutant Discharge Elimination System(SPDES)Permit for Construction Activites (GP-0-15-002).This document will serve as a master document for a proposed Condomium Development in the hamlet of Cutchogue,Town of Southold,New York and shall be adhered to during construction. The project site is considered to be the entire 45.99±acre lot located on the northside of Griffing Street and Schoolhouse Lane intersection. The GP-0-15-002 permit authorizes storm water discharges to surface waters of the state for construction projects involving soil disturbances of one or more acres;including disturbance of less than one acre but part of a larger common plan of development. This manual provides the following information,as required for the SWPPP by the SPDES Permit when applicable to the project: > Site Description > Development Description > Wetland Characteristics > Drainage Characteristics > Soil Characteristics > Rare and Endangered Species Data > Construction Phasing Information > Pollution Prevention Practices > Erosion and Sedimentation Control BMPs > Operations and Maintenance Plans > Grading,Drainage and Erosion Control Plans > SPDES Permit and Fact Sheet > Notice of Intent(NOI)Form(to be finalized and Certified by the Owner/Operator) > Notice of Termination(NOT)Forth > Inspection Forms,Monitoring and Reporting Requirements > Contractor Certification Form The general requirements(Part IL C. 1-5)for Owners/Operators with permit coverage include the following: > Ensure all provisions of the SWPPP are implemented from the commencement of construction activity until all areas of disturbance have achieved final stabilization and the Notice of Termination(NOT) has been submitted. P.\29305.00 Heritage Ctchog�e�repmtsVSW PPPVSW PPP\5 WP 1 Introduction and Instruction to Owner/Operator ntch PP M-12.doc > Maintain a copy of the General Permit(GP-0-15-002),NOI,NOI Acknowledgement Letter, SWPPP,MS4 SWPPP Acceptance Forth(if applicable) and inspection reports at the consruction site. > Written authorization from NYSDEC or the regulated,traditional land use control(MS4) must be received prior to construction activity that will disturb greater than five acres of soil at one time. > Notify the regulated traditonal land use control MS4,in writing,of any amendments or modifications to the post construction management practice component of the SWPPP,if applicable. The NYSDEC has the right to suspend or revoke an Owner/Operator coverage under this permit at any time if the NYSDEC determines that the SWPPP does not meet the permit requirements. Prior to construction,the Owner/Operator(under the supervision of a licensed Engineer/Landscape Architect or NYSDEC Certified Inspector),must complete the following: > Certify that they have read and understand the terms of the SPDES Permit. > Review this manual and coordinate any revisions with the Licensed Engineer who prepared the SWPPP. > Review location and types of sedimentation and erosion control materials as shown on the approved Soil Erosion and Sediment Control Plans. > Designate areas for stockpiles, sanitary facilities, dumpsters,wash-down,lay-down and construction trailers and appropriate erosion and sedimentation control features,which shall be approved by the Licensed Engineer,Landscape Architect,or the NYSDEC Certified Inspector. > Identify the trained demolition contractors, site contractors and subcontractors that will be responsible for the implementation of the SWPPP and any post construction storm water management practices,if exists. A trained contractor should be on site on a daily basis when soil disturbance activities are being performed. (See the Forms section at the end of this manual.) > Designate project contact person(s) and include contact information. The SWPPP is a dynamic document,and must be continually updated by the Owner/Operator, under the supervision of a licensed Engineer/Landscape Architect or NYSDEC Certified Inspector,throughout construction. It is the responsibility of the Owner/Operator,under the supervision of a Licensed Engineer/Landscape Architect or NYSDEC Certified Inspector,to update this manual and perforin the activities herein,including,but not limited to: > Perform inspections and maintenance as designated in this manual, and as required as the project phases change. > Prepare and certify inspection reports and include reports in the SWPPP. > Request revisions to plans,as necessary,to denote major site changes and/or changes in the site BMPs. , °5.°°xe';`age Ctchog�e�repmtsVSW PPPVSW PPP\5 WP 2 Introduction and Instruction to Owner/Operator ntch PP Maunalldoc > Request revisions to plans to reflect changes in stockpile, sanitary facility,lay-down and other site areas. > Maintain schedule of dates of major earthwork, stabilization and/or erosion control installations. > Document any spills. > Document off-site sedimentation resulting from this construction. The following documents will need to be inserted prior to the submission to the NYSDEC: > Signed Certification forth from Contractors and Subcontractors(See Fortes Section). > Signed Notice of Intent(See NOI Section 1). > Signed MS4 SWPPP Acceptance Form,if applicable(See Forms Section). > Final approved site plans including the Erosion Control Plan(See Attachment B) > Phasing or construction schedule(See Construction Schedule and Sequence, Section IV). The Owner/Operator,under the supervision of a Licensed Engineer,Landscape Architect,or NYSDEC Certified Inspector,must update the SWPPP throughout construction,until a Notice of Termination(NOT)Forth has been submitted to the NYSDEC.From the date of submital of the NOT forth,the SWPPP documents must be maintained by the site operator for a period of five years from the date of final stabilization of the site.Any changes to the approved Erosion Control Plan must be coordinated with a Licensed Engineer. , °5.°°xe';`age Ctchog�e�repmtsVSW PPPVSW PPP\5 WP 3 Introduction and Instruction to Owner/Operator ntch PP Maunalldoc Notice of Intent (NOI) Form The Notice of Intent(NOI)is to be submitted once a SWPPP has been developed according to all applicable requirements of the GP-0-15-002 Permit. On behalf of the Owner/Operator, VHB has prepared a majority of the NOI Forth,based on the existing conditions of the site, proposed work on the site,and water quality calculations. The NOI form must be reviewed and signed by the Owner/Operator and submitted to the New York State Department of Environmental Conservation(NYSDEC)for their review. The Owner/Operator shall also advise VHB of any additional information that may not have been filled in the NOI forth. The NOI does require the Local Municipality to sign an MS4 SWPPP Acceptance Forth. As per the requirements of the NYSDEC,this SWPPP document has been prepared,and approved by the MS4,prior to filing of the Notice of Intent(NOI).If the SWPPP conforms to the Department's technical standards and the activities will not discharge a pollutant of concern to an impaired water or a TMDL watershed,authorization to discharge under this permit may occur five(5)business days after the date on which the NOI is received by the Department.Any activities which do not comply with the technical standards or for construction site activities subject to a TMDL,authorization to discharge begins no sooner than sixty(60)business days from receipt of the NOI by the DEC unless notified otherwise. The completed NOI forms can be found in the Forms Section,of this report, and blank forms also can be found on the NYS DEC website(http://www.dec.U..gov/1. The completed NOI forth and MS4 Acceptance Forth must be mailed to the NYSDEC Central Office in Albany (Bureau of Water Permits, 625 Broadway,4'Floor,Albany,NY 12233-3505). The completed NOI Forth and MS4 Acceptance Forth must be certified and submitted by the Owner/Operator in order for it to take effect. C,,tch 5.00 g,,eVHeritage 4 Notice of Intent(NOI)Form Cntchog�e�repmtsVSW PPPVSW PPP\5 WP PP Maunalldoc 11 Project Figures The following pages contain figures that will help establish the location and existing conditions of the site. These figures are: > Figure 1 —Site Location Map > Figure 2—Site Aerial Map > Figure 3—Existing Conditions Plan > Figure 4—FEMA Flood Map , °5.°°xe';`age Ctch5 Project Figures ntchog�e\repmtsVSW PPPVSW PPP\5 WP PP Mamialldoc \WYLIDATA\proiects\29305.00 Heritage Cutchogue\reports\SWPPP\SWPPP\Figures\Figures.dwq SITE Location Map Figure 1 The Heritage At Cutchogue September 2016 Town of Southold Cutchogue,New York \\NYLIDATA\projects\29305.00 Heritage Cutchogue\reports\SWPPP\SWPPP\Figures\Figures.dwg C�, ,, ,n � c. / ✓ /ri ,c,,rr 6 fi / „- n � r"„ ,/ray / / Ic ,/ ,r 1 .. 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OOOp �� -THE�2S;� N B e -yS. p MPS LO{ _ LOT I 563.41', ACV �— i wl ns tg ' } '.1918 1O ��✓ �_�/�J-, 4 v I �";�, fly ��. �� •'�, �� ` � I 1 �' u, ul ° #� f ..E ...°v ✓s! ,.� / .�. 1�A tICA A jl/ 23 W` N/O/F ROMAN GiHOIIO a"CH % r OF THE SACRED HEART o___.._tel I �_�T:,]o.6p•(oEm) /4,�i� D1WN OF 2/B.BI AO �$ 6ONRiIXO CERDFIED TO: '"' TOCTOTACE AT CU OZE FIRST AMERICAN DRE INSURANCE COMPANY O NEW YORK au w Sti7fODL HOUSE'U" Existing Conditions Plan Figure 3 The Heritage At Cutchogue September 2016 Town of Southold Cutchogue,New York \WYLIDATA\proiects\29305.00 Heritage Cutchogue\reports\SWPPP\SWPPP\Figures\Figures.dwq _r 'i If�p�(r0i�ll;,��jk�✓!/ r r.; n 0,$ �J` J%l1r✓) 9 r l�� ,r ��j✓ yb l� il y,l n. � r J.r I"; � fid" °��r�� f �f/r{J�+ '9 F "7�rlr{y�'�'�/m"i�I' "G�r� iil ✓k�/ I� ril r (s, Y r I i "'u,Vy, Jz� ///�IIIA��✓�Ir�'/r�'1� �, � lt��„ ', � r ,I� ja �„� ,,, // marl � r a�,�F'V4 y/,/r/ ff�i , '�/�r”/��I ra �rt%�r �%' a r,, I' I ;��^ , � { / i � /✓ij�"`!i IIS( N� a SITE r�r� rN>� ✓r r�wr � r' kJW, /FIS/r r�/ O ( G r I' I r / i t „ I✓ 'k �� rJ� r Ip i /°JrN4r ad r r EE,L{ ;,rroG ✓� rr 7 � � rr�, J �� TANE r, TFEMA Flood Map Figure 4 The Heritage At Cutchogue September 2016 Town of Southold Map 4: 36103C0163H Cutchogue,New York (Revised 9/25/09) III Project Description Site Location The project site is located on the north side of Griffing Street and Schoolhouse Lane intersection in the hamlet of Cutchogue,Town of Southold, Suffolk County,New York. Comprising 45.99±acres,the subject property is currently vacant and undeveloped.The property is located on Suffolk County Tax Map(SCTM)parcel—District 0100- Section 102— Block 1 —Lot 33.3. The site is approximately 55 feet long along the frontage of School House Lane/Griffing Street. Surrounding Zoning North: Agricultural Conservation(A-C)to the north; East: Low-Density Residential R-80(R-80)and a small area of Low-Density Residential R-40(R-40)to the east. South: Hamlet Business(HB)and R-40 to the south; West: R-40 to the west. Surrounding Land Uses North: A farmhouse and an active agricultural operation to the;a single-family residential subdivision generally on one-acre lots,known as The Woods,on Evergreen Drive,to the northwest;farmland in active production and the Red Rooster Bistro, a commercial use,to the northeast. East: Active farmland and single-family residential uses to the east;and a small RV camp to the southeast. South: Schoolhouse Lane and Griffing Street to the southeast,with undeveloped woodlands east of Griffing Street. West: Single-family residential development on approximately one-acre lots along Highland Road,Bridle Lane, Spur Road and Crown Land Lane. Section II of this report includes Figures 1 and 2 which depict the Site Location Map and Aerial Map,respectively. " °5.°°xe"`age Ctch6 Project Description ntc hogue�repmts\S W PPPVS W PPP\5 W PP P Manualldoc Existing Conditions The site is presently vacant,undeveloped land that is traversed by a network of unpaved trails. The site is comprised of one tax lot that is currently and will remain zoned HD(Hamlet Density Residential District). Section II,Figure 3 displays an existing conditions plan for the project site. Floodplains According to the Flood Insurance Rate Map(FIRM)prepared by Federal Emergency Management Agency(FEMA),no portion of the site is located within the 100-year floodplain. Information obtained from the Federal Emergency Management Agency website states that the site location is within FEMA Map Number 36103C0163H. The map retrieved is included as Figure 4 in Section II of this report. Soil Conditions According to the NRCS soil survey for Suffolk County,obtained from the USDA website,HaA and RdB soils comprise the majority of the subject property,while small portions of the property contain PIC,P1B and HaB. (Soil data can be found in Attachment C). Topography The site generally slopes from the middle of the site out towards the property lines from an elevation of 35 down to approximately 23 near Griffing Avenue.Stormwater currently recharges to surface and groundwater through natural leaching processes. Accordingly, stormwater that does not infiltrate or evapotranspire ponds at the site and runs overland onto adjacent properties and roadways. Topographical information is shown on the Existing Conditions Plan located in Section II of this report. Endangered Species and Critical Habitat The New York Natural Heritage Program's"Environmental Resource Mapper" indicates that the site is not within the vicinity of rare plants, animals, and/or significant natural communities.See Attachment D,for the NYSDEC Environmental Map. Historic Places The New York State Office of Parks,Recreation and Historic Preservation(OPRHP) map states that the site is located within an archeological sensitive area. (See Attachment D,for OPRHP Map)However,based upon Phase IA and Phase IB " °5.°°xe"`age Ctch7 Project Description ntc hogue�repmts\S W PPPVS W PPP\5 W PP P Manualldoc archaeological investigations by Tracker Archaeology Services,Inc. dated October 2007,the archaeological consultants did not recommend further investigation of the site,therefore it is not anticipated that the proposed project would have any significant adverse impacts with respect to archaeological resources. Proposed Project The proposed project involves the construction of 124 age-restricted condominium units on the approximately 45.99-acre subject property. The 130 units would consist of 52 two-story units with a maximum of 1,999 square feet of livable floor area (identified as Unit Type A), and 72 units with a maximum of 1,599 square feet of livable floor area(identified as Unit Type B),which would be available as one-or two-story structures. The proposed project includes the construction of approximately 219,000 square feet of livable floor area.The two-story units would be between 27 and 30 feet in overall height while the one-story units would be 16±feet in height. Parking for the units would be provided via the individual unit driveways and two- car garages for a total of 248 garage parking spaces.An additional 36 spaces would be provided for the clubhouse,tennis courts, and pool. The proposed project incorporates a variety of features and amenities,including: > A 6,189-square-foot clubhouse with a maximum height of 35 feet and an associated outdoor recreation area,including an outdoor pool and two outdoor tennis courts to be featured near the main entrance to the subject property. > 23±acres set aside for open space within the interior of the subject property as well as around the perimeter. > A pervious nature trail(±0.90-miles)that meanders throughout the interior of the subject property as well as along the northern and eastern property boundary, and provides access to the clubhouse,outdoor recreation area and putting green. > A 50-foot natural buffer around the site. Based upon the Layout and Materials Plan provided in Appendix B,approximately 57 percent of the site would be maintained as pervious surfaces. General Storm Water Management The existing site recharges stormwater to surface and groundwater through natural leaching processes.Accordingly, stormwater that does not infiltrate or evapotranspire is permitted to pond at the site or run overland onto adjacent properties and roadways. The proposed project would include an on-site drainage system designed in conformance with both Town and State requirements to retain stormwater runoff " °5.°°xe"`age Ctch8 Project Description ntc hogue�repmts\S W PPPVS W PPP\5 W PP P Manualldoc generated by on-site impervious surfaces. The Town requirement is to provide capacity for storing a two-inch rainfall;however,the system is sized and designed to accommodate capacity for a 100-year storm event,utilizing a system of drywells and drainage reserve areas located within the interior of the subject property. The Grading and Drainage Plan in Appendix B provides details of the drainage system and drainage calculations. An analysis was completed using Hydro CAD software in order to demonstrate that the proposed project captures and recharges virtually all of the post development increase in runoff during a 100-year rain event and, therefore,does not result in an increase in stormwater discharged from the site.See the Hydro CAD report in Attachment E. The storm water management system for the site was designed with area drains, 71 drywells,three drainage reserve areas and the utilization of one natural depression. The project provides a total of±408,982 cubic feet of storage. Permanent Stabilization and Landscaping Final site grading and stabilization will be completed as soon as practicable to eliminate exposed soils and potential sources of erosion. Areas to be paved will be covered by bituminous pavement after final subgrades are established.All litter, as well as debris generated by construction activities,will be removed by hand from the site and adjacent undeveloped areas. Project Materials The materials or substances below are expected to be present on-site during the construction period of the proposed project: Bituminous Asphalt Landscape Materials(Trees and Portland Cement Concrete Shrubs) Lumber Petroleum-Based Products Cleaning Solvents Storm Water Structures Detergents Erosion and Sediment Control Welding Supplies Materials The contractor,prior to and during the construction process,shall update this materials list when necessary. Non-Industrial Discharges The following non-storm water discharges may occur on this construction site: > Fire hydrant flushing; > Potable water including uncontaminated water line flushing; " °5.°°xe"`age Ctch9 Project Description ntc hogue�repmts\S W PPPVS W PPP\5 W PP P Manualldoc > Pavement wash water where spills or leaks of toxic or hazardous materials have not occurred(unless all spilled material has been removed)and where detergents are not used; > Uncontaminated air conditioning or compressor condensate; > Uncontaminated ground water or spring water; > Foundation or footing drains where flows are not contaminated with process materials such as solvents;and > Uncontaminated excavation dewatering " °5.°°xe"`age Ctch10 Project Description ntc hogue�repmts\S W PPPVS W PPP\5 W PP P Manualldoc IV Construction Schedule and Sequence The following attachment is the Owner/Operator's prepared construction schedule and sequence. If revisions to the schedule and sequence are needed the Owner/Operator shall coordinate the changes with the Licensed Engineer,Landscape Architect or NYSDEC Certified Inspector. The Owner/Operator will update this construction schedule and sequence as needed, and maintain a list of construction milestones. The Site Contractor shall follow construction sequence scheduling. The sequence of actions in an Erosion and Sedimentation Control(E&SC)plan is runoff control, stabilization, and then sediment control. The management practices used in each phase of the plan must be identified on the Construction Sequence Schedule and on appropriate maps. Erosion and sediment control provisions should be included for all construction activities as shown on the plans or as directed by the Engineer. General Project Phasing Site development for the project will occur in three overlapping stages: 1. Site Preparation, 2. Construction, and 3. Final grading and Stabilization. This project will be constructed in four phases, and will disturb more than five acres of land throughout construction. Approximately 28 to 34 units are to be built per phase with each phase taking about 1-to-11/z years. See the proposed project phasing plan and narrative for additional information. � °5.°°xe"`age C 11 Construction Schedule and Sequence ntc chhogue�repmts\S W PPPVS W PPP\5 W PP P Manualldoc Site Preparation Stage Prior to beginning any construction activities,the contractor shall install all erosion and sediment control practices as outlined in this report and on the project plans. Construction fences will be installed as shown on the attached project plans or as required by the Local Municipality. A Construction entrance is to be placed on the intersection of Griffing Street and School House Lane.Silt fencing will be placed around the entire site(see the Erosion and Sediment Control plan located in attachment B for exact location).The silt fence will be entrenched to eliminate sediment underflow as detailed in the construction drawings. The erosion control measures will be inspected and maintained routinely throughout the duration of the project.Following the installation of erosion and sedimentation controls,the site grading and excavation may occur. As determined by the Licensed Engineer,Landscape Architect or NYSDEC Certified Inspector,temporary sediment basins may be constructed during this stage. Temporary berms will be used to capture runoff on the site during construction. No sediment-laden water will be allowed to discharge to resource areas. The Contractor,under the observation of a Licensed Engineer,Landscape Architect, or NYSDEC Certified Inspector, shall ensure that the erosion controls are installed correctly and will be effective. They shall be responsible to maintain and clean out any erosion control measures and add any additional measures as determined by the Licensed Engineer,Landscape Architect,NYSDEC Certified Inspector,or determined by Local Municipality. Construction Stage Throughout the construction stage of the project,the contractor is required to maintain the condition of all erosion and sediment control practices.These measures should be maintained in accordance with the project plans and weekly inspections. Final Grading and Stabilization Phase Upon completion of an area,the contractor shall perform all final grading and stabilization to prevent sediment runoff from leaving the site. Paved areas shall be swept clean of all sediment and debris;landscaped areas shall be stabilized with sod, or topsoil, seed and mulch as necessary.When the site is completely stabilized, a Notice of Termination will be issued to the Town and DEC. " °5.°°xe"`age Ctchog12 Construction Schedule and Sequence ntc hue�repmts\S W PPPVS W PPP\5 W PP P Manualldoc (Owner/Operator to insert prepared construction schedule and sequence here) � °5.°°xe"`age C 13 Construction Schedule and Sequence ntc chhog�e�repmts\S W PPPVS W PPP\5 W PP P ManuaH.doc Spill Prevention Plan and Response Procedures All construction personnel will be instructed regarding spill prevention practices and procedures. Notices stating these practices will be posted in the office trailer,and the site construction supervisor will be responsible for seeing that these procedures are followed. Material Management Practices The following material management practices will be used to reduce the risk of spills or other accidental exposure of materials and substances to storm water runoff. These include good housekeeping practices and guidelines for the handling of hazardous products. The following good housekeeping practices will be followed on-site during the construction period. > Contractor/Owner to designate material storage and stockpile areas which will not interfere with site operations and erosion and sediment control measures. > An effort will be made to store only enough products required to do the job. > All materials stored on-site will be stored in a neat,orderly manner in their appropriate containers, and(if possible)under a roof or other enclosure. > Products will be kept in their original containers with the original manufacturer's label. > Substances will not be mixed with one another unless recommended by the manufacturer. > Whenever possible, all of a product will be used before disposing of the container. > Manufacturer's recommendations for proper use and disposal will be followed. > The site superintendent will inspect the storage area daily to ensure proper use and disposal of materials on-site. ,9°5.°°xe';`age Ctchog�e�repmtsVSW PPPVSW PPP\5 WP 14 Spill Prevention Plan and Response Measures n PP Maunalldoc The following practices will reduce the risks associated with hazardous materials (e.g.,petroleum products,solvents): > A copy of all Material Safety Data Sheets(MSDS)for materials or products used during construction will be kept in the office trailer. > Products will be kept in original containers unless they are not re-sealable. > Original labels and material safety data(MSD sheets)containing important product information will be retained on site by the contractor in the construction trailer. > If surplus product must be disposed,manufacturer's or local-and state- recommended methods for proper disposal will be followed. Product-Specific Practices The following product-specific practices will be followed on-site. Recommendations are provided for petroleum products,fertilizers, solvents,paints,and other hazardous substances, and concrete.Please note that the following are general recommendations and the Owner/Operator and Contractor are responsible for compliance with NYSDEC regulations as per the handling of the following materials. Petroleum Products All on-site vehicles will be monitored for leaks and will receive regular preventive maintenance to reduce the chance of leakage. No vehicle maintenance or handling of petroleum products will occur within 100 feet of a wetland or waterway.Petroleum products will be stored in tightly sealed containers that are clearly labeled.Any asphalt substances used on-site will be applied according to manufacturer's recommendations. No petroleum-based or asphalt substances will be stored within 100 feet of a wetland or waterway. Fertilizers Fertilizers will be applied only in the minimum amounts recommended by the manufacturer. Once applied,the fertilizer will be worked into the soil to limit exposure to storm water. Storage will be in a covered shed;and the contents of any partially used bags will be transferred to a sealable,plastic bin to avoid spills.No fertilizer storage will occur within 100 feet of a wetland or waterway. Solvents, Paints, and other Hazardous Substances All containers will be tightly sealed and stored when not required for use. Excess materials will not be discharged to the storm sewer system,but will be properly disposed according to manufacturer's instructions or state and local regulations. No storage will occur within 100 feet of a wetland or waterway. ,9°5.°°xe';`age Ctchog�e�repmtsVSW PPPVSW PPP\5 WP 15 Spill Prevention Plan and Response Measures n PP Maunalldoc Concrete Trucks Concrete trucks will not be allowed to wash out or discharge surplus concrete or drum wash water within 100 feet of wetland resources or into catch basins that are already in place. Spill Control/Notification Practices In addition to the good housekeeping and material management practices discussed above,the following practices will be followed for spill control,notification and cleanup. > Manufacturer's recommended methods for spill cleanup will be clearly posted and site personnel will be informed of the procedures and the location of the information and cleanup supplies. > Materials and equipment necessary for spill cleanup will be kept in the material storage area on-site. Equipment and materials will include,but will not be limited to, shovels,wheelbarrows,brooms, dustpans,mops,rags,gloves, goggles,kitty litter or Speedi-Dry, sand, sawdust, and plastic and metal trash containers specifically designated for this purpose. > All spills will be cleaned up immediately after discovery. > The spill area will be kept well ventilated and personnel will wear protective clothing to prevent injury from contact with a hazardous substance. > Spills of toxic or hazardous material in excess of reportable quantities, as established by the New York State Department of Environmental Conservation (NYSDEC),will be reported to the NYSDEC Spill Hotline: 1-800-457-7362(within NYS)or 1-518 457-7362(from outside NYS)or to the National Response Center: 1-800-424-8802. The Emergency Spill Response Procedure is attached. > The Construction Superintendent responsible for the daily operations will be the spill prevention and cleanup coordinator. He will designate at least three other site personnel to receive spill prevention and cleanup training. The names of the responsible spill personnel will be posted in the material storage area and in the on-site office trailer. Source Control Trash removal, designated trash storage areas,pavement sweeping and the controlled use of fertilizer and deicing agents on the site will reduce the pollutant load in the site's storm water management system. Dust Control ,9°5.°°xe';`age Ctchog�e�repmtsVSW PPPVSW PPP\5 WP 16 Spill Prevention Plan and Response Measures n PP Maunalldoc Fugitive dust from large areas of unstabilized soil can be a problem during construction. On dry and windy days when dust generation is a concern or when construction activities have the potential to produce dust,a water truck will traverse the site and spray water as necessary to prevent dust from forming.Vegetative cover will also be implemented for disturbed areas that are not subject to traffic. Construction Trash Removal Daily loose trash removal will prevent litter, construction debris, and construction chemicals exposed to storm water from becoming a pollutant source for storm water discharges. All loose trash will be placed in appropriate storage containers until disposed of properly off-site. Covered Trash/Storage Areas Areas to be used for storing dumpsters, compactors or other raw or waste materials will be covered to prevent contact with storm water. Pavement Sweeping Pavement sweeping may be required daily or even more frequently during construction where sediment tracking from construction equipment is a problem. Fertilizer Fertilizer will be utilized to aid in establishing landscaping. It will be placed only in turf areas(approximately 3,000 SF) and will be applied at a rate of 4 lbs.per 1,000 SF, three times per year totaling approximately 36 lbs.of fertilizer per year. It is estimated that the landscaping will be fully established after 12 months. This project will utilize slow release fertilizer in order to limit the amount of potential nutrients that enter surrounding water systems and fertilizer use will be reduced as needed once the proposed landscaping is established and will never exceed the amounts placed during the initial establishment period. Waste Disposal All waste materials will be collected and stored in securely lidded metal dumpsters leased from a licensed solid waste management company and the dumpster will be emptied as necessary. Trash will be hauled by a licensed contractor and disposed in accordance with federal,state,and local environmental regulations. No trash or construction waste will be buried on-site, and all personnel will be instructed regarding the correct procedure for waste disposal. Notices stating these practices will be posted in the office trailer and the site construction supervisor will be responsible for seeing that these procedures are followed. ,9°5.°°xe';`age Ctchog�e�repmtsVSW PPPVSW PPP\5 WP 17 Spill Prevention Plan and Response Measures n PP Maunalldoc Hazardous Waste All hazardous waste materials(e.g.,petroleum products, solvents)will be disposed in the manner specified by local and state regulation,or by the manufacturer.Site personnel will be instructed in these practices, and the site construction supervisor will be responsible for seeing that these procedures are followed. Sanitary Waste All sanitary waste will be collected from the portable units by a licensed contractor a minimum of three times weekly, and disposed in compliance with state and local regulation. P.\29305.00 Heritage Cntchog�eVepmtsVSW PPPVSW PPP\5 WP 18 Spill Prevention Plan and Response Measures PP M-12.doc VI Required Erosion and Sedimentation Control The Owner/Operator,under the supervision of a Licensed Engineer,Landscape Architect,or NYSDEC certified inspector,will be responsible for ensuring that the specified storm water pollution control measures are installed,maintained,relocated and added to as necessary. Details of recommended storm water pollution control techniques are provided below. Erosion and Sedimentation Controls The purpose of an erosion and sedimentation control program is to minimize temporary impacts to down gradient properties during the construction phase of the project by retaining sediment on site to the maximum extent practicable. The program incorporates BMPs specified in guidelines developed by the NYSDEC' and complies with the requirements of the SPDES General Permit for Storm Water Discharges from Construction Activities. Proper implementation of the erosion and sedimentation control program will: > Minimize exposed soil areas through temporary seeding and construction sequencing. > Place structures to manage storm water runoff and erosion. > Establish a permanent vegetative cover or other forms of stabilization as soon as practicable. All manufactured control measures must be installed and maintained in accordance with the manufacturer's specifications. The following sections describe the erosion and sedimentation controls that will be used on this site. The Owner/Operator, under the observation of a licensed Engineer, Landscape Architect or NYSDEC certified inspector,will implement and add to these site conditions,when required. ................-- .........-----------------------.................--.........---------------------- 1 New York State Department of Environmental Conservation(DEC).New York Storm Water Management Design Manual,August 2010 and New York Standards and Specifications for Erosion and Sediment Control,August 2005. P.\29305.00 Heritage Cntchog�eVepmtsVSW PPPVSW PPP\5 WP 19 Required Erosion and Sedimentation Control PP M-12.doc Temporary Erosion Control Practices During construction the contractor is required to install and maintain temporary erosion and sediment control measures to prevent sediment and debris from washing into the drainage systems and/or leaving the site. At such time that all the restoration of the construction area is completed and the areas of disturbance are permanently stabilized,the contractor will then be permitted to remove the temporary erosion and sediment control devices. The temporary erosion and sediment control devices will be installed prior to the start of any disturbance of the existing ground surface and will remain in place until all disturbed areas are properly stabilized. In addition to the temporary erosion and sediment control devices indicated on the Erosion and Sediment Control Details plan,the contractor shall be responsible to install any additional measures that may be needed. These additional erosion preventative measures will be installed in accordance with the"New York State Standards and Specifications for Erosion and Sediment Control". Stabilization Practices (Vegetative Measures) Stabilization practices to be used on this site include mulching and temporary seeding. Stabilization practices will be initiated as soon as practicable in portions of the site where construction activities have temporarily or permanently ceased. The project has been designed to preserve existing vegetation where possible. Mulching Straw mulching will be employed on all inactive and disturbed areas that will remain un-stabilized for more than seven(7) days. Mulch materials will be spread uniformly by hand or machine at a rate of approximately 90 pounds per 1,000 square feet. Mulch will be spread such that at least 90 percent of the ground surface is covered.The mulch shall be anchored with wood fiber mulch(hydromulch)at 500- 750 lbs./acre.The wood fiber mulch must be applied through a hydroseeder immediately after mulching.Mulching may be used with temporary or permanent seeding,or with slope stabilization techniques. Hydromulch may also be used for temporary soil stabilization. Temporary Seeding A temporary vegetative cover will be established on areas of exposed soils(including stockpiles)that remain inactive and un-stabilized for a period of more than seven(7) days for slopes. The seeded surfaces will be covered with a layer of straw mulch or hydro mulch as described above. P.\29305.00 Heritage Cntchog�eVepmtsVSW PPPVSW PPP\5 WP 20 Required Erosion and Sedimentation Control PP M-12.doc ._---------------........ ---------------......... Structural Practices Structural erosion and sedimentation controls to be used throughout the project's site during construction. They include the following: Silt Fence Barriers Prior to any ground disturbance the silt fence is to be put in place at the down gradient limit of work in accordance with the plan filed with the Town of Southold (see relevant plans located in Attachment B). When necessary,additional straw bale and silt fence barriers will be installed immediately down gradient of erosion-prone areas, such as the base of steep exposed slopes and around the base of stockpiles, throughout the construction phase of the project. The contractor is also required to install silt fence and construction fence around the proposed drainage reserve areas in order to minimize disturbance and compaction in these areas.The barriers will be entrenched into the substrate to prevent underflow. The erosion control barriers will be inspected in accordance with the inspection requirements of the project. Any sediment that collects behind the barriers will be removed and will be either reused at the site or disposed of at a suitable offsite location.Any damaged sections of silt fence or straw bales will be repaired or replaced. Inlet Protection The inlets of proposed and existing catch basins will be protected from sediment inflow throughout the construction period through the installation Filter Fabric Drop Inlet Protection,or approved equal. Off-site catch basins will be protected from sediment inflow through the installation of Dandy Bags,or approved equal. SiltsacksTM may be used by surrounding them with a barrier of staked straw bales. In the latter case, a layer of filter fabric will be installed beneath the grates of the catch basins. These protection measures will be inspected in accordance with the inspection requirements of the project and will be routinely maintained until the drainage area tributary to each inlet has been vegetative stabilized and/or covered by pavement.Any sediment that collects behind the barrier or in the sacks will be removed and will be either reused onsite or disposed of at a suitable off-site location. Stabilized Construction Exits Stone anti-tracking pads will be installed at each access point to the work area to prevent the off-site transport of sediment by construction vehicles. The stabilized construction exits will be at least fifty feet long and will consist of a 6-inch thick layer of crushed stone(1.5 to 2.5 inches in diameter). The stone will be placed over a layer of non-woven filter fabric. The anti-tracking pads will remain in place until a binder coat of pavement has been established in areas to be paved. ,9°5.°°xe';`age Ctchog�e�repmtsVSW PPPVSW PPP\5 WP 21 Required Erosion and Sedimentation Control n PP Maunalldoc Dewatering Haybale Basins and Filter Bags Dewatering basins will be established in the event that dewatering activities are required on the site. The dewatering basin will consist of a ring of staked haybales overlain by non-woven geotextile filter fabric and crushed stone established on a well vegetated and stable surface. Discharge water will be pumped into the basin and allowed to drain through the fabric onto stabilized surfaces. Dewatering filter bags may be used in place of straw bale basins. To ensure proper installation,filter bags will be placed on relatively flat terrain free of brush and stumps to avoid ruptures and punctures. Proper installation requires cutting a small hole in the corner of the bag,inserting the pump discharge hose, and securing the discharge hose to the bag with a hose clamp. Filter bags are to be constructed of non-woven geotextile fabric. A maximum of one six-inch discharge hose will be allowed per filter bag. To help prevent punctures,geotextile fabric will be placed beneath the filter bag when used in wooded locations. Unattended filter bags will be encircled with a straw bale or silt fence barrier. The Owner/Operator,under the supervision of a Licensed Engineer, Landscape Architect or NYSDEC Certified Inspector,will be responsible to implement all the necessary procedures of discharging the pumped water in compliance with the dewatering permit. Where dewatering operations require the installation of temporary dewatering wells with a total capacity of 45 gallons per minute or more, and/or require discharge off- site,the contractor will be responsible for obtaining the necessary NYSDEC permits. Temporary Sediment Trap (If Necessary) The temporary sediment trap is to intercept sediment-laden runoff and trap the sediment in order to protect drainage ways,properties, and rights-of-way below the sediment trap from sedimentation.Sediment traps shall be located so that they can be installed prior to grading or filling in the drainage area they are to protect.Traps must not be located any closer than 20 feet from a proposed building foundation if the trap is to function during building construction.Sediment shall be removed and the trap restored to the original dimensions when the sediment has accumulated to half of the design depth of the trap.Sediment removed from the trap shall be deposited in a protected area and in such a manner that it will not erode. Additional Erosion Control Measures (If Applicable) The following controls may be implemented if directed by the Licensed Engineer/Landscape Architect,or NYSDEC Certified Inspector. ,9°5.°°xe';`age Ctchog�e�repmtsVSW PPPVSW PPP\5 WP 22 Required Erosion and Sedimentation Control n PP Maunalldoc Interior Site Erosion Controls Additional erosion controls may be used in the central portions of the site in the event that excessive erosion occurs. Placement of temporary silt fence, straw bales or earthen berms may be used to control the movement of material within the site. If such controls are deemed necessary for adequate protection,they will be installed perpendicular to the flow direction to contain sediment. These measures will be installed to prevent perimeter erosion controls and diversion swales from becoming compromised. The following steps will be followed to ensure that the controls are installed correctly and will be effective. Resource Protection > Evaluate, mark and protect important trees and associated rooting zones,on-site septic systems absorption fields,etc. > Temporary construction fencing will be placed around trees to remain and will be at a minimum at the drip line of the longest branch. > Protect existing vegetated areas,by fencing off, suitable for filter strips,especially in perimeter areas. Surface Water Protection > Divert off site runoff from entering disturbed areas. > Identify bodies of water located either on site or in the vicinity of the site. > Plan appropriate practices to protect on-site or downstream surface water. In addition,inlet protection shall be installed on proposed catch basins on site. Stabilized Construction Exit > Establish a temporary construction entrance to capture mud and debris from construction vehicles before they enter the public highway. > Stabilize bare areas(entrances, construction routes,equipment parking areas) immediately as work takes place.Top these areas with gravel or maintain vegetative cover. > Provide wash down facilities where necessary. > Remove sediment tracked onto public streets on a daily basis. A description of the Stabilized Construction Exit is included in this Section and detailed on the plans located in Attachement B. Perimeter Sediment Controls ,9°s.°°x�;`a Ctchog�e�repmtsVSW PPPVSW PPP\5 WP 23 Required Erosion and Sedimentation Control n PP Maunalldoc > Silt fence material and installation must comply with the NYSDEC standard drawings and specifications. They shall also comply with the Erosion and Sedimentation Control Plan. > Silt fencing and straw bale barriers will be entrenched to eliminate sediment underflow. > Silt fences will be installed based on appropriate spacing intervals.This interval will decrease as the slope increases.Silt fence should be placed on or parallel to contours where there is no concentration of water flowing to the silt fence and where erosion occurs in the form of sheet erosion.On sloped areas,the area below the final silt fence shall be undisturbed ground. > Principal sediment basins,if utilized,will be installed after construction site is assessed. > Additional sediment traps and barriers will be installed as needed during grading. > Erosion control blankets will be stapled and/or staked into place on slopes 3:1 or greater after disturbing area. > The erosion control barriers will be inspected and maintained routinely throughout the duration of the project. Runoff Control > Install runoff control after sediment traps are installed and before land grading starts. > Control the runoff in each small drainage area before flow reaches runoff from entire site. > Divert offsite or clean runoff from disturbed areas. > Convey surface flows from highly erodible soil and steep slopes to more suitable stable areas. > Redirect runoff from existing or proposed cut and fill slopes to reduce water velocity without causing erosion. > Design final site drainage to prevent erosion, concentrated flows to adjacent properties,uncontrolled overflow and ponding. Runoff Conveyance System > Stabilize conveyance system. > Seed channles and streambanks at the outlet points,if exists. > Install check dams to slow down the velocity of concentrated flow. > Protect existing natural drainage systems and streams by maintaining vegetative buffers and by implementing other appropriate practices. Groundwater Recharge Measures > Install practices to infiltrate the runoff on the site as much as possible. P.\29305.00 Heritage Cntchog�eVepmtsVSW PPPVSW PPP\5 WP 24 Required Erosion and Sedimentation Control PP M-12.doc > Provide groundwater recharge to maintain the hydrologic regime of the downstream water bodies and simulate predevelopment hydrology. > Use infiltration practices to prevent concentrated flows. Construction Stage The construction of the buildings,roads,parking areas and site appurtenances will occur during this stage. Temporary sediment traps consisting of swales and berms with stone outlet points will be constructed and maintained throughout construction, in order to retain runoff on site during the construction process. Grading > Limit the initial clearing and earth disturbance to that necessary to install sediment control measures.Excavation for footings, clearing,or other earth disturbance may only take place after the sediment and erosion controls are installed. > Stockpile the existing topsoil and other soils for future use on site. The stockpiles should be protected, stabilized and sited in a locationg away from the storm drains and waterbodies. It should be saved on site for reuse if not contaminated. The stockpile shall be covered or temporary seeded when construction ceases for more than seven(7) days. > Changes in grade or removal of vegetation should not disturb established buffers and should not be allowed within any regulated distance from wetlands,the high water line of a body of water affected by tidal action,or other such protected zones. > Avoid disturbance of steep slopes. > Maintain undisturbed buffer to control runoff from steep slopes within sensitive areas. > Proposed grading should not impair existing surface drainage resulting in a potential erosion hazard impacting adjacent land or waterbodies. Permanent Erosion Control Measures Permanent Seeding Upon completion of final grading, any areas not covered by pavement,other forms of stabilization,or other methods of landscaping will be seeded with an erosion control seed mix. On slopes 4:1 and greater,loamed and seeded areas will be mulched with hay to prevent erosion prior to germination of the seed. Permanent Drainage Construction P.\29305.00 Heritage Cntchog�eVepmtsVSW PPPVSW PPP\5 WP 25 Required Erosion and Sedimentation Control PP M-12.doc > Install all proposed drainage structures. > Install inlet protection at the newly installed drainage structures. > Maintain the inlets free of any debris or sediment build up. Erosion Control (Stabilization) > Implement erosion control practices to keep the soil in place. > Complete stabilization for the surface of all perimeter controls and perimeter slopes, as soon as practical. > When activities temporarily cease during construction,soil stockpiles and exposed soil should be stabilized by seed,mulch or other appropriate measures as soon as possible,but in no case more than seven(7)days after construction activity has ceased. > Apply temporary or permanent stabilization measures immediately on all disturbed areas where work is delayed or completed. > Where the initiation of stabilization measures by the seventh day after construction activity temporarily or permanently ceased is precluded by snow cover or frozen ground conditions, stabilization measures shall be initiated as soon as practicable; > Where construction activity on a portion of the site is temporarily ceased,for a period of longer than seven(7)days,temporary stabilization measures shall be provided to ensure continued stabilization. > Consult the local Soil and Water Conservation District for proper timing and application rate of seed,fertilizer and mulch. Sediment Control > At any location where surface runoff from disturbed or graded areas may flow off the construction area, sediment control measures must be installed to prevent sediment from being transported off site.No grading,filling or other disturbance is allowed within existing drainage swales. > Swales or other areas that transport concentrated flow should be appropriately stabilized. > Downspout or sump pump discharges must have acceptable outfalls that are protected by splash blocks,sod,or piping as required by site conditions(i.e.,no concentrated flow directed over fill slopes). ............................. ................................................................ Final Grading and Stabilization Stage Finalize Grading & Landscaping > Final grading and stabilization as per the construction documents,as soon as practical. > All open areas,including borrow and spoil areas must be stabilized as per construction plans. P.\29305.00 Heritage Cntchog�eVepmtsVSW PPPVSW PPP\5 WP 26 Required Erosion and Sedimentation Control PP M-12.doc > Plan to install permanent top soil,seed,sod,mulch,riprap or other stabilization practices in the remaining disturbed areas as appropriate. > Stabilization must be undertaken no later than seven(7) days after construction activity has ceased except as noted in the GP-0-15-002. > Remove the temporary control measures. > Catch basins to be properly cleaned of sedimentation from construction activities. Post-construction Controls > Catch basins and dry wells shall be cleaned on a regular basis to maintain the design infiltration rates. > Identify the permanent structural or non-structural practices that will remain on the site. > Ensure that the permanent structural or non-structural practices utilized during construction are properly designed to suit the post-construction site conditions. > In finalizing the plan,evaluate the post-construction runoff condition on the site. > Minimize the risk of concentrated flow and erosion. On-site runoff controls help reduce the risk of increased runoff velocity,erosion and point source discharge.In addition to the standard runoff and erosion control practices identified in NY Standards for Erosion and Sediment Control, some of the techniques discussed under on-site runoff control in the discussion of Site Preparation may be applied. The details for the above meaures and for any additional measures that may be required can be located in the NYSDEC Specifications book. ,9°5.°°xe';`age Ctchog�e�repmtsVSW PPPVSW PPP\5 WP 27 Required Erosion and Sedimentation Control n PP Maunalldoc Vil Inspections, Maintenance and Project Documentation The SPDES Construction General Permit requires that the Owner/Operator,under the supervision of a Licensed Engineer,Landscape Architect or NYSDEC Certified Inspector,be responsible for implementing,inspecting and maintaining each of the storm water controls described in the plan. In addition,the Owner/Operator,under the supervision of a Licensed Engineer,Landscape Architect or NYSDEC Certified Inspector,must document compliance with the Permit throughout construction. Inspections As described in Part IV,of the GP-0-15-002 Storm Water Permit,the operator shall have a Qualified Professional(Inspector)conduct an assessment of the site prior to the commencement of construction and certify in an inspection report that the appropriate erosion and sediment controls described in the SWPPP and required by Part IV.C.,of this permit,have been adequately installed or implemented to ensure overall preparedness of the site for the commencement of construction. Following the commencement of construction,for soil disturbance activities that are on-going and the owner or operator has received authorization in accordance with Part ILC.3 to disturb greater than five acres of soil at any time,the Qualified Professional(Inspector) shall conduct at least two site inspections every seven calendar days.The two inspections shall be separated by a minimum of two full calendar days.During each inspection,the Qualified Professional(Inspector)shall record the information required by Part IV.C,of the Permit. Inspections shall include all areas of the site disturbed by construction activity and areas used for materials storage that are exposed to precipitation. The Inspector must look for evidence of,or the potential for,pollutants entering the storm water system,inspect the BMPs installed as part of the Plan,inspect the site drainage outfalls and inspect the site egress points for tracking. If,in the course of the inspection,the inspector identifies an eroded area or an area impacted by sedimentation, digital photos are required of the areas. Additional erosion and sedimentation controls will be implemented, and the SWPPP will be revised to include these changes. A digital photograph,with date stamp,will be taken after the corrective action has been completed ,9°5.°°xe';`age Ctchog�e�repmtsVSW PPPVSW PPP\5 WP 28 Inspections,Maintenance and Project Documentation n PP Maunalldoc For each inspection,the Inspector must complete a written inspection report in accordance with the Permit. A sample inspection form has been included in the Forms section of this manual. The Operator shall maintain a record of all inspection reports in a site logbook. The site logbook shall be maintained on site and be made available to the permitting authority upon request. Prior to the commencement of construction,the Operator shall certify in the site logbook that the SWPPP,prepared in accordance with Part III,of this permit,meets all Federal,State and local erosion and sediment control requirements. The Owner/Operator will maintain a copy of the General Permit(GP-0-15-002),NOI,NOI Acknowledgement Letter,SWPPP,MS4 SWPPP Acceptance form, and inspection reports on the construction site until final stabilization and the NOT has been submitted to the NYSDEC. The Operator must make available for review and copying by any person within five business days of the owner or operator receiving a written request to review the NOI,SWPPP or inspection reports. Any copying of documents will be done at the requester's expense. Maintenance All erosion and sedimentation controls and other protective measures identified in the SWPPP must be maintained in effective operating condition. If site inspections identify BMPs that are not operating effectively,maintenance,modification or replacement with an alternative or additional BMPs must be performed as soon as possible, and before the next storm event whenever practicable. If implementation before the next storm event is impracticable,the situation must be documented in the SWPPP and alternative BMPs must be implemented as soon as possible. The following maintenance program is proposed to ensure the effectiveness of the structural controls during the construction phase of this project: > The on-site representative will inspect all sediment and erosion control structures and records of the inspections will be prepared and maintained on-site by the Owner/Operator. > Silt shall be removed from behind barriers if greater than 6-inches deep or as needed. > Paved areas of the site will be swept on an as needed basis during the site construction. > Damaged or deteriorated items will be repaired immediately after identification. > The underside of straw bales should be kept in close contact with the earth and reset as necessary,if applicable. > Sediment from sediment traps or sedimentation ponds must be removed when design capacity has been reduced by 50 percent. > Sediment that is collected in structures shall be disposed of properly and covered if stored on-site. ,9°5.°°xe';`age Ctchog�e�repmtsVSW PPPVSW PPP\5 WP 29 Inspections,Maintenance and Project Documentation n PP Maunalldoc > Erosion control structures shall remain in place until all disturbed earth has been securely stabilized. After removal of structures, disturbed areas shall be re- graded and stabilized as necessary. If,in the course of the inspection,the Inspector identifies an eroded area or an area impacted by sedimentation, additional erosion and sedimentation controls,will be coordinated with the Licensed Engineer or Landscape Architect,who prepared the SWPPP. The SWPPP will then be revised to include these changes. Coordination with local Storm Water Management Officer may be required which may include additional inspections or requirements. Documentation In some cases, as-builts may be required for submission. The following records must be maintained as part of the Owner/Operator's SWPPP: > Dates when major grading activities occur; > Dates when construction activities temporarily or permanently cease on a portion of the site; > Dates when stabilization measures are initiated; > Inspection dates and processes. The forms in the Forms Section have been prepared by NYSDEC to collect information from Construction Storm Water Inspections and to report Quarterly Summary SWPPP Status with Permit Compliance. ,9°5.°°xe';`age Ctchog�e�repmtsVSW PPPVSW PPP\5 WP 30 Inspections,Maintenance and Project Documentation n PP Maunalldoc Vill Project Storm Water Management Practices The Owner/Operator,under the supervision of a Licensed Engineer,Landscape Architect or NYSDEC Certified Inspector,will be responsible for ensuring that the specified water quality and water quantity control measures are installed and maintained as necessary. Details of recommended storm water pollution control techniques are provided below. 5-Step Storm Water Site Planning Process As per the latest New York State Storm Water Management Design Manual,Planners and Designers must apply runoff reduction techniques as part of a comprehensive storm water management planning process.This process is intended to help maintain the pre-construction hydrologic conditions of the site using green infrastructure practices to reduce the post construction runoff from the site and reduce the need for treatment. The proposed project has been designed to provide two-inches of storage of stormwater runoff in accordance with Town requirements.The HydroCAD analysis demonstrates that the proposed development captures and recharges the increase in runoff for the 100-year rain event from post-development conditions per NYSDEC requirements. The following constitutes the five step planning process detailed in the NYS Storm Water Design Manual. Step 1 — Site Planning to Preserve Natural Features and Reduce Impervious Cover During the site planning process of this project, consideration was given to reducing the impervious cover.The site will be improved with natural drainage reserve areas and it is in the intent of this project to install standard SMP's to ensure that the storm water is contained and treated within the site as described throughout this report. C,,t9h 5.00 g,,eVHeritage 31 Project Termination Cntchog�e�repmtsVSW PPPVSW PPP\5 WP PP Maunalldoc Step 2 —Determine Water Quality Treatment Volume (WQv) The proposed drainage system for the proposed Heritage at Cutchogue site complies with state and local storm water management requirements. The New York State Storm Water Management Design Manual identifies the 90%rainfall event for this region to be 1.5 inches. Following that guidance,the required water quality volume (WQv)was calculated using 1.5 inches of rainfall which resulted in a volume of 106,516 cubic feet which will be fully treated by the storm water management system through infiltration practices.The proposed drainage design provides for the storage of 408,984 cubic feet of runoff. See calculations sheets in Attachment E. Step 3 —Runoff Reduction by Applying Green Infrastructure Techniques and Standard SMP's with RRv Capacity During the design phase,this project considered the potential use of green infrastructure and SMP's with Runoff Reduction Volume(RRv)capacity techniques. As NYSDEC recognizes drywells and drainage reserve areas on Long Island as an acceptable runoff reduction technique,all runoff from the developed site will be directed to catch basins and area drains in connection with 12-foot diameter drywells and drainage reserve areas for infiltration. As shown on the calculations in Attachment E,the RRv achieved with infiltration (408,984 cubic feet)exceeds WQv as noted above. Step 4—Apply Standard Stormwater Management Practices to Address Remaining Water Quality Volume This step is not applicable since the drywells and drainage reserve areas proposed provides storage for runoff in excess of the RRV(See Step 2&3 above). Step 5—Design of volume and peak rate control practices, where required. All runoff from the developed area is directed to the on-site infiltration system into porous soils,designed to provide capacity for a two-inch rainfall as required by the Town of Southold. C,,t9h 5.00 g,,eVHeritage 32 Project Termination Cntchog�e�repmtsVSW PPPVSW PPP\5 WP PP Maunalldoc The proposed development captures and recharges the increase in runoff for the 100- year rain event from post-development conditions per NYSDEC requirements.See Appendix E for Summary of the Hydrologic Analyses. Water Quality Controls Water quality control measures are designed to minimize impact to receiving water bodies from storm water pollution. As storm water runoff travels across impervious surfaces,it collects pollutants such as sediments,oil,and trash and carries them to a receiving water body. Properly installed and maintained storm water best management practices(BMPs)can capture these pollutants and reduce the impact that the proposed development has on the environment. The BMPs selected for this project were designed based on guidelines developed in the New York State Storm water Management Design Manualz. Proper implementation of the water quality control measures will: > reduce post-construction sediment impacts;and > promote infiltration of storm water to maintain pre-construction hydrology All manufactured control measures must be installed and maintained in accordance with the manufacturer's specifications. The following sections describe the water quality controls that will be used on this site. The Owner/Operator,under the supervision of a Licensed Engineer,Landscape Architect or NYSDEC Certified Inspector,will implement and add to these site conditions,when required. Non-structural Practices Pavement Sweeping The sweeping program will remove sediments and contaminants directly from paved surfaces before their release into storm water runoff. Pavement sweeping has been demonstrated to be an effective initial treatment for reducing pollutant loading into storm water3. Catch Basin Cleaning Sediments and other contaminants that are not removed by pavement sweeping are transported by storm water runoff to the site's catch basin systems. Once in the catch basin,they settle to the bottom of the system. This material will be removed on a .................---........-----------------------..................---........---------------------- 2 New York State Department of Environmental Conservation(DEC).New York Storm water Management Design Manual,August 2010 3 U.S.Environmental Protection Agency,1979.Demonstration of Nonpoint Pollution Abatement Through Improved Street Cleaning Practices. C,,t9hos.00 eVep.;ca 33 project Termination Cntchog�e�repmtsVSW PPPVSW PPP\5 WP PP Maunalldoc regular basis to prevent contaminants from migrating out of the drainage system during high flow events or reducing the infiltration capacity of the devices. Dry Well Cleaning Material will be removed on a regular basis to prevent contaminants from migrating out of the drainage system during high flow events or reducing the infiltration capacity of the devices. --------------------------------------------------------------- ............................................-................-.................. Structural Practices Structural erosion and sedimentation controls to be used on the site include the following: Landscaping Wherever possible,existing vegetation is maintained on the site. Landscape materials installed in new planting beds and lawn areas shall be planted with native and drought-tolerant species that do not require intensive applications of fertilizer or water. When required,fertilizer and pesticide applications will be managed to prevent storm water runoff from coming in contact with these products. Infiltration Practices The following infiltration practices have been selected and approved for installation at this site. Dry Wells Dry wells constructed from twelve-foot diameter perforated concrete rings provide storage of the required water quality volume(WQv)as well as infiltration capacity for three inches of rainfall over the site.These dry wells shall be excavated to a depth sufficient to achieve six feet of penetration into suitable leaching material.Where required,backfill under and around the dry wells shall be of granular material containing less than 15%fine sand, silt,and clay.Where a single dry well cannot provide sufficient storage and/or infiltration capacity,the dry wells shall be connected in series with twelve-inch HDPE pipe.An inspection and cleaning port shall be provided at the ground surface so that the dry wells can be maintained. Drainage Reserve Areas Drainage reserve areas are an infiltration practice recognized by the New York State Department of Environmental Conservation(NYSDEC)that store the water quality volume in a shallow depression before it is infiltrated into the ground.The proposed drainage reserve areas in conjunction with the proposed drywell system meet the key considerations provided by the NYSDEC and have the capacity to store the required two-inch rainfall. C,,t9h 5.00 g,,eVepoelage 34 Project Termination Cntchog�e�repmtsVSW PPPVSW PPP\5 WP PP Maunalldoc ix Project Termination An Owner/Operator must terminate coverage under the SPDES permit by submitting a Notice of Termination(NOT). The Notice of Termination may be filed if there is a completion of all construction activity identified in the SWPPP, all temporary structural erosion and sediment control measures have been removed and that all post construction storm water management practices have been constructed. A final inspection by a qualified inspector is required. The qualified inspector is required to sign the"Final Stabilization' and"Post Construction Storm Water Management Practice' sections of the NOT. A regulated traditional land use control MS4 is required to sign the MS4 Acceptance Statement on the NOT Form,if applicable. If there are any post-construction storm water management practices,the Owner/Operator must ensure that post-construction storm water practices are properly maintained in accordance with an operations and maintenance manual to be prepared in conjunction with the NOT. > Any post-construction storm water management practices and right of ways have been deeded to the Local Municipality,where applicable. > There is an executed maintenance agreement with the Local Municipality that will maintain any post-construction storm water management practices,where applicable. > If privately owned,the Owner/Operator modified the deed to include a deed covenant that requires operation and maintenance of the practices. > If post-construction storm water management practices that are owned by a public or private institution,the Owner/Operator must have policy and procedures in place to ensure the operation and maintenance of the practices are carried out as per the operation and maintenance plan. On behalf of the Owner/Operator VHB has prepared a majority of the NOT Form. The NOT form must be reviewed and signed by the Owner/Operator,the certified licensed inspector, and the regulated traditional land use control MS4 and submitted to the NYSDEC,when the project is to be terminated. The Owner/Operator shall also advise VHB of any additional information that may not have been filled in the NOT form. The completed NOT Form must be certified and submitted by the Owner/Operator in order for the permit to be closed. Heritage CP.\29305.00,tchog,,eVepmtsVSW PPPVSWPPP\5WP 36 Prgjeet Termination PP Maunalldoc ■ Attachment A SPDES Permit for Storm Water Discharges GP-0-15-002 ,9°5.°°xe';`age Ctchog�e�repmtsVSW PPPVSW PPP\5 WP A-1 SPDES Permit for Storm Water Discharges GP-0-15-002 n PP Maunalldoc NEWYORK STATE Of OPPOWUMly Environmental Conservation l ati NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION SPDES GENERAL PERMIT FOR STORMWATER DISCHARGES From CONSTRUCTION ACTIVITY Permit No. GP-0-15-002 Issued Pursuant to Article 17, Titles 7, 8 and Article 70 of the Environmental Conservation Law Effective Date: January 29, 2015 Expiration Date: January 28, 2020 John J. Ferguson Chief Permit Administrator 1 / 12 / 15 Aut ori ed Si nature I Date Address: NYS DEC Division of Environmental Permits 625 Broadway, 4th Floor Albany, N.Y. 12233-1750 PREFACE Pursuant to Section 402 of the Clean Water Act ("CWA"), stormwater discharges from certain construction activities are unlawful unless they are authorized by a National Pollutant Discharge Elimination System ("NPDES') permit or by a state permit program. New York's State Pollutant Discharge Elimination System ("SPDES') is a NPDES- approved program with permits issued in accordance with the Environmental Conservation Law ("ECL'). This general permit ("permit") is issued pursuant to Article 17, Titles 7, 8 and Article 70 of the ECL. An owner or operator may obtain coverage under this permit by submitting a Notice of Intent ("NOI") to the Department. Copies of this permit and the NOI for New York are available by calling (518) 402-8109 or at any New York State Department of Environmental Conservation ("the Department") regional office (see Appendix G).They are also available on the Department's website at- http://www.dec.nv.qov/ An owner or operator of a construction activity that is eligible for coverage under this permit must obtain coverage prior to the commencement of construction activity. Activities that fit the definition of"construction activity', as defined under 40 CFR 122.26(b)(14)(x), (15)(i), and (15)(ii), constitute construction of a point source and therefore, pursuant to Article 17-0505 of the ECL, the owner or operator must have coverage under a SPDES permit prior to commencing construction activity. They cannot wait until there is an actual discharge from the construction site to obtain permit coverage. *Note: The italicized words/phrases within this permit are defined in Appendix A. I NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION SPDES GENERAL PERMIT FOR STORMWATER DISCHARGES FROM CONSTRUCTION ACTIVITIES Part I. PERMIT COVERAGE AND LIMITATIONS..............................................................1 A. Permit Application .................................................................................................1 B. Effluent Limitations Applicable to Discharges from Construction Activities ...........1 C. Post-construction Stormwater Management Practice Requirements ....................4 D. Maintaining Water Quality.....................................................................................8 [::::::. 1::::.::.]Jgiibiilliity �J!ir"ndeir ...Fhiis Geir"neirall II::::1enr1-flt.....................................................................9 F. Activities Which Are Ineligible for Coverage Under This General Permit ..............9 Part 11. OBTAINING PERMIT COVERAGE .....................................................................12 A. Notice of Intent (NOI) Submittal ..........................................................................12 B. Permit Authorization............................................................................................13 C. General Requirements For Owners or Operators With Permit Coverage ...........15 D. Permit Coverage for Discharges Authorized Under GP-0-10-001 .......................17 E. Change of Owner or Operator.............................................................................17 Part III. STORMWATER POLLUTION PREVENTION PLAN (SWPPP)...........................18 A. General SWPPP Requirements ..........................................................................18 B. Required SWPPP Contents ................................................................................20 C. Required SWPPP Components by Project Type.................................................23 Part IV. INSPECTION AND MAINTENANCE REQUIREMENTS.....................................24 A. General Construction Site Inspection and Maintenance Requirements ..............24 B. Contractor Maintenance Inspection Requirements .............................................24 C. Qualified Inspector Inspection Requirements......................................................24 Part V. TERMINATION OF PERMIT COVERAGE...........................................................28 A. Termination of Permit Coverage .........................................................................28 Part VI. REPORTING AND RETENTION OF RECORDS................................................30 A. Record Retention ................................................................................................30 B. Addresses ...........................................................................................................30 Part VII. STANDARD PERMIT CONDITIONS.................................................................31 A. Duty to Comply....................................................................................................31 B. Continuation of the Expired General Permit........................................................31 C. Enforcement........................................................................................................31 D. Need to Halt or Reduce Activity Not a Defense...................................................31 E. Duty to Mitigate ...................................................................................................32 F. Duty to Provide Information.................................................................................32 G. Other Information ................................................................................................32 H. Signatory Requirements......................................................................................32 I. Property Rights.......................................................................................................34 J. Severability.............................................................................................................34 K. Requirement to Obtain Coverage Under an Alternative Permit...........................34 L. Proper Operation and Maintenance ....................................................................35 M. Inspection and Entry ...........................................................................................35 N. Permit Actions.....................................................................................................36 O. Definitions ...........................................................................................................36 P. Re-Opener Clause ..............................................................................................36 11 Q. Penalties for Falsification of Forms and Reports.................................................36 R. Other Permits......................................................................................................36 APPENDIXA....................................................................................................................37 APPENDIXB....................................................................................................................44 APPENDIXC ...................................................................................................................46 APPENDIXD ...................................................................................................................52 APPENDIXE....................................................................................................................53 APPENDIXF....................................................................................................................55 III (Part 1) Part I. PERMIT COVERAGE AND LIMITATIONS A. Permit Application This permit authorizes stormwater discharges to surface waters of the State from the following construction activities identified within 40 CFR Parts 122.26(b)(14)(x), 122.26(b)(15)(i) and 122.26(b)(15)(ii), provided all of the eligibility provisions of this permit are met- 1. et:1. Construction activities involving soil disturbances of one (1) or more acres; including disturbances of less than one acre that are part of a larger common plan of development or sale that will ultimately disturb one or more acres of land; excluding routine maintenance activity that is performed to maintain the original line and grade, hydraulic capacity or original purpose of a facility; 2, Construction activities involving soil disturbances of less than one (1) acre where the Department has determined that a SPDES permit is required for stormwater discharges based on the potential for contribution to a violation of a water quality standard or for significant contribution of pollutants to surface waters of the State. . Construction activities located in the watershed(s) identified in Appendix D that involve soil disturbances between five thousand (5,000) square feet and one (1) acre of land. B. Effluent Limitations Applicable to Discharges from Construction Activities Discharges authorized by this permit must achieve, at a minimum, the effluent limitations in Part 1.B.1. (a)—(f) of this permit. These limitations represent the degree of effluent reduction attainable by the application of best practicable technology currently available._ 1, Erosion and Sediment Control Requirements - The owner or operator must select, design, install, implement and maintain control measures to minimize the discharge of pollutants and prevent a violation of the water quality standards. The selection, design, installation, implementation, and maintenance of these control measures must meet the non-numeric effluent limitations in Part 1.B.1.(a) — (f) of this permit and be in accordance with the New York State Standards and Specifications for Erosion and Sediment Control, dated August 2005, using sound engineering judgment. Where control measures are not designed in conformance with the design criteria included in the technical standard, the owner or operator must include in the Stormwater Pollution Prevention Plan ("SWPPP") the reason(s) for the deviation or alternative design and provide information 1 (Part 1.B.1) which demonstrates that the deviation or alternative design is equivalent to the technical standard. a. Erosion and Sediment Controls. Design, install and maintain effective erosion and sediment controls to minimize the discharge of pollutants and prevent a violation of the water quality standards. At a minimum, such controls must be designed, installed and maintained to: (i) Minimize soil erosion through application of runoff control and soil stabilization control measure to minimize pollutant discharges; (ii) Control stormwater discharges to minimize channel and streambank erosion and scour in the immediate vicinity of the discharge points; (iii) Minimize the amount of soil exposed during construction activity; (iv) Minimize the disturbance of steep slopes; (v) Minimize sediment discharges from the site; (vi) Provide and maintain natural buffers around surface waters, direct stormwater to vegetated areas and maximize stormwater infiltration to reduce pollutant discharges, unless infeasible; (vii) Minimize soil compaction. Minimizing soil compaction is not required where the intended function of a specific area of the site dictates that it be compacted; and (viii) Unless infeasible, preserve a sufficient amount of topsoil to complete soil restoration and establish a uniform, dense vegetative cover. b. Soil Stabilization. In areas where soil disturbance activity has temporarily or permanently ceased, the application of soil stabilization measures must be initiated by the end of the next business day and completed within fourteen (14) days from the date the current soil disturbance activity ceased. For construction sites that directly discharge to one of the 303(d) segments listed in Appendix E or is located in one of the watersheds listed in Appendix C, the application of soil stabilization measures must be initiated by the end of the next business day and completed within seven (7) days from the date the current soil disturbance activity ceased. See Appendix A for definition of Temporarily Ceased. c. Dewatering. Discharges from dewatering activities, including discharges 2 (Part 1.B.1.c) from dewatering of trenches and excavations, must be managed by appropriate control measures. d. Pollution Prevention Measures. Design, install, implement, and maintain effective pollution prevention measures to minimize the discharge of pollutants and prevent a violation of the water quality standards. At a minimum, such measures must be designed, installed, implemented and maintained to: (i) Minimize the discharge of pollutants from equipment and vehicle washing, wheel wash water, and other wash waters. This applies to washing operations that use clean water only. Soaps, detergents and solvents cannot be used; (ii) Minimize the exposure of building materials, building products, construction wastes, trash, landscape materials, fertilizers, pesticides, herbicides, detergents, sanitary waste and other materials present on the site to precipitation and to stormwater. Minimization of exposure is not required in cases where the exposure to precipitation and to stormwater will not result in a discharge of pollutants, or where exposure of a specific material or product poses little risk of stormwater contamination (such as final products and materials intended for outdoor use) ; and (iii) Prevent the discharge of pollutants from spills and leaks and implement chemical spill and leak prevention and response procedures. e. Prohibited Discharges. The following discharges are prohibited: (i) Wastewater from washout of concrete; (ii) Wastewater from washout and cleanout of stucco, paint, form release oils, curing compounds and other construction materials; (iii) Fuels, oils, or other pollutants used in vehicle and equipment operation and maintenance; (iv) Soaps or solvents used in vehicle and equipment washing; and (v) Toxic or hazardous substances from a spill or other release. f. Surface Outlets. When discharging from basins and impoundments, the outlets shall be designed, constructed and maintained in such a manner that sediment does not leave the basin or impoundment and that erosion 3 (Part 1.B.1.f) at or below the outlet does not occur. C. Post-construction Stormwater Management Practice Requirements 1. The owner or operator of a construction activity that requires post- construction stormwater management practices pursuant to Part III.C. of this permit must select, design, install, and maintain the practices to meet the performance criteria in the New York State Stormwater Management Design Manual ("Design Manual"), dated January 2015, using sound engineering judgment. Where post-construction stormwater management practices ("SMPs") are not designed in conformance with the performance criteria in the Design Manual, the owner or operator must include in the SWPPP the reason(s) for the deviation or alternative design and provide information which demonstrates that the deviation or alternative design is equivalent to the technical standard. 2. The owner or operator of a construction activity that requires post- construction stormwater management practices pursuant to Part III.C. of this permit must design the practices to meet the applicable sizing criteria in Part I.C.2.a., b., c. or d. of this permit. a. Sizing Criteria for New Development (i) Runoff Reduction Volume ("RRv"): Reduce the total Water Quality Volume ("WQv") by application of RR techniques and standard SMPs with RRv capacity. The total WQv shall be calculated in accordance with the criteria in Section 4.2 of the Design Manual. (ii) Minimum RRv and Treatment of Remaining Total WQv: Construction activities that cannot meet the criteria in Part I.C.2.a.(i) of this permit due to site limitations shall direct runoff from all newly constructed impervious areas to a RR technique or standard SMP with RRv capacity unless infeasible. The specific site limitations that prevent the reduction of 100% of the WQv shall be documented in the SWPPP. For each impervious area that is not directed to a RR technique or standard SMP with RRv capacity, the SWPPP must include documentation which demonstrates that all options were considered and for each option explains why it is considered infeasible. In no case shall the runoff reduction achieved from the newly constructed impervious areas be less than the Minimum RRv as calculated using the criteria in Section 4.3 of the Design Manual. The remaining portion of the total WQv 4 (Part I.C.2.a.ii) that cannot be reduced shall be treated by application of standard SMPs. (iii) Channel Protection Volume ("Cpv"): Provide 24 hour extended detention of the post-developed 1-year, 24-hour storm event; remaining after runoff reduction. The Cpv requirement does not apply when: (1) Reduction of the entire Cpv is achieved by application of runoff reduction techniques or infiltration systems, or (2) The site discharges directly to tidal waters, or fifth order or larger streams. (iv) Overbank Flood Control Criteria ("Qp"): Requires storage to attenuate the post-development 10-year, 24-hour peak discharge rate (Qp) to predevelopment rates. The Qp requirement does not apply when: (1) the site discharges directly to tidal waters or fifth order or larger streams, or (2) A downstream analysis reveals that overbank control is not required. (v) Extreme Flood Control Criteria ("Qf'): Requires storage to attenuate the post-development 100-year, 24-hour peak discharge rate (Qf) to predevelopment rates. The Qf requirement does not apply when: (1) the site discharges directly to tidal waters or fifth order or larger streams, or (2) A downstream analysis reveals that overbank control is not required. b. Sizing Criteria for New Development in Enhanced Phosphorus Removal Watershed (i) Runoff Reduction Volume (RRv): Reduce the total Water Quality Volume (WQv) by application of RR techniques and standard SMPs with RRv capacity. The total WQv is the runoff volume from the 1-year, 24 hour design storm over the post-developed watershed and shall be calculated in accordance with the criteria in Section 10.3 of the Design Manual. (ii) Minimum RRv and Treatment of Remaining Total WQv: Construction activities that cannot meet the criteria in Part I.C.2.b.(i) of this permit due to site limitations shall direct runoff from all newly constructed impervious areas to a RR technique or 5 (Part I.C.2.b.ii) standard SMP with RRv capacity unless infeasible. The specific site limitations that prevent the reduction of 100% of the WQv shall be documented in the SWPPP. For each impervious area that is not directed to a RR technique or standard SMP with RRv capacity, the SWPPP must include documentation which demonstrates that all options were considered and for each option explains why it is considered infeasible. In no case shall the runoff reduction achieved from the newly constructed impervious areas be less than the Minimum RRv as calculated using the criteria in Section 10.3 of the Design Manual. The remaining portion of the total WQv that cannot be reduced shall be treated by application of standard SMPs. (iii) Channel Protection Volume (Cpv): Provide 24 hour extended detention of the post-developed 1-year, 24-hour storm event; remaining after runoff reduction. The Cpv requirement does not apply when: (1) Reduction of the entire Cpv is achieved by application of runoff reduction techniques or infiltration systems, or (2) The site discharges directly to tidal waters, or fifth order or larger streams. (iv) Overbank Flood Control Criteria (Qp): Requires storage to attenuate the post-development 10-year, 24-hour peak discharge rate (Qp) to predevelopment rates. The Qp requirement does not apply when: (1) the site discharges directly to tidal waters or fifth order or larger streams, or (2) A downstream analysis reveals that overbank control is not required. (v) Extreme Flood Control Criteria (Qf): Requires storage to attenuate the post-development 100-year, 24-hour peak discharge rate (Qf) to predevelopment rates. The Qf requirement does not apply when: (1) the site discharges directly to tidal waters or fifth order or larger streams, or (2) A downstream analysis reveals that overbank control is not required. c. Sizing Criteria for Redevelopment Activity 6 (Part I.C.2.c.i) (i) Water Quality Volume (WQv): The WQv treatment objective for redevelopment activity shall be addressed by one of the following options. Redevelopment activities located in an Enhanced Phosphorus Removal Watershed (see Part III.6.3. and Appendix C of this permit) shall calculate the WQv in accordance with Section 10.3 of the Design Manual. All other redevelopment activities shall calculate the WQv in accordance with Section 4.2 of the Design Manual. (1) Reduce the existing impervious cover by a minimum of 25% of the total disturbed, impervious area. The Soil Restoration criteria in Section 5.1.6 of the Design Manual must be applied to all newly created pervious areas, or (2) Capture and treat a minimum of 25% of the WQv from the disturbed, impervious area by the application of standard SMPs; or reduce 25% of the WQv from the disturbed, impervious area by the application of RR techniques or standard SMPs with RRv capacity., or (3) Capture and treat a minimum of 75% of the WQv from the disturbed, impervious area as well as any additional runoff from tributary areas by application of the alternative practices discussed in Sections 9.3 and 9.4 of the Design Manual., or (4) Application of a combination of 1, 2 and 3 above that provide a weighted average of at least two of the above methods. Application of this method shall be in accordance with the criteria in Section 9.2.1(B) (IV) of the Design Manual. If there is an existing post-construction stormwater management practice located on the site that captures and treats runoff from the impervious area that is being disturbed, the WQv treatment option selected must, at a minimum, provide treatment equal to the treatment that was being provided by the existing practice(s) if that treatment is greater than the treatment required by options 1 — 4 above. (ii) Channel Protection Volume (Cpv): Not required if there are no changes to hydrology that increase the discharge rate from the project site. (iii) Overbank Flood Control Criteria (Qp): Not required if there are no changes to hydrology that increase the discharge rate from the project site. 7 (Part I.C.2.c.iv) (iv) Extreme Flood Control Criteria (Qf): Not required if there are no changes to hydrology that increase the discharge rate from the project site. d. Sizing Criteria for Combination of Redevelopment Activity and New Development Construction projects that include both New Development and Redevelopment Activity shall provide post-construction stormwater management controls that meet the sizing criteria calculated as an aggregate of the Sizing Criteria in Part I.C.2.a. or b. of this permit for the New Development portion of the project and Part I.C.2.c of this permit for Redevelopment Activity portion of the project. D. Maintaining Water Quality The Department expects that compliance with the conditions of this permit will control discharges necessary to meet applicable water quality standards. It shall be a violation of the ECL for any discharge to either cause or contribute to a violation of water quality standards as contained in Parts 700 through 705 of Title 6 of the Official Compilation of Codes, Rules and Regulations of the State of New York, such as: 1. There shall be no increase in turbidity that will cause a substantial visible contrast to natural conditions; 2. There shall be no increase in suspended, colloidal or settleable solids that will cause deposition or impair the waters for their best usages; and 8. There shall be no residue from oil and floating substances, nor visible oil film, nor globules of grease. If there is evidence indicating that the stormwater discharges authorized by this permit are causing, have the reasonable potential to cause, or are contributing to a violation of the water quality standards; the owner or operator must take appropriate corrective action in accordance with Part IV.C.5. of this general permit and document in accordance with Part IV.C.4. of this general permit. To address the water quality standard violation the owner or operator may need to provide additional information, include and implement appropriate controls in the SWPPP to correct the problem, or obtain an individual SPDES permit. If there is evidence indicating that despite compliance with the terms and conditions of this general permit it is demonstrated that the stormwater discharges authorized by this permit are causing or contributing to a violation of water quality standards, or 8 (Part I.D) if the Department determines that a modification of the permit is necessary to prevent a violation of water quality standards, the authorized discharges will no longer be eligible for coverage under this permit. The Department may require the owner or operator to obtain an individual SPDES permit to continue discharging. E. Eligibility Under This General Permit 1. This permit may authorize all discharges of stormwater from construction activity to surface waters of the State and groundwaters except for ineligible discharges identified under subparagraph F. of this Part. 2. Except for non-stormwater discharges explicitly listed in the next paragraph, this permit only authorizes stormwater discharges from construction activities. . Notwithstanding paragraphs E.1 and E.2 above, the following non- stormwater discharges may be authorized by this permit: discharges from firefighting activities; fire hydrant flushings; waters to which cleansers or other components have not been added that are used to wash vehicles or control dust in accordance with the SWPPP, routine external building washdown which does not use detergents; pavement washwaters where spills or leaks of toxic or hazardous materials have not occurred (unless all spilled material has been removed) and where detergents are not used; air conditioning condensate; uncontaminated groundwater or spring water; uncontaminated discharges from construction site de-watering operations; and foundation or footing drains where flows are not contaminated with process materials such as solvents. For those entities required to obtain coverage under this permit, and who discharge as noted in this paragraph, and with the exception of flows from firefighting activities, these discharges must be identified in the SWPPP. Under all circumstances, the owner or operator must still comply with water quality standards in Part I.D of this permit. 4. The owner or operator must maintain permit eligibility to discharge under this permit. Any discharges that are not compliant with the eligibility conditions of this permit are not authorized by the permit and the owner or operator must either apply for a separate permit to cover those ineligible discharges or take steps necessary to make the discharge eligible for coverage. F. Activities Which Are Ineligible for Coverage Under This General Permit All of the following are not authorized by this permit- 9 (Part I.F) 1. Discharges after construction activities have been completed and the site has undergone final stabilization; 2. Discharges that are mixed with sources of non-stormwater other than those expressly authorized under subsection E.3. of this Part and identified in the SWPPP required by this permit; 3. Discharges that are required to obtain an individual SPDES permit or another SPDES general permit pursuant to Part VII.K. of this permit; 4, Construction activities or discharges from construction activities that may adversely affect an endangered or threatened species unless the owner or operator has obtained a permit issued pursuant to 6 NYCRR Part 182 for the project or the Department has issued a letter of non-jurisdiction for the project. All documentation necessary to demonstrate eligibility shall be maintained on site in accordance with Part II.C.2 of this permit. 5. Discharges which either cause or contribute to a violation of water quality standards adopted pursuant to the ECL and its accompanying regulations; 6. Construction activities for residential, commercial and institutional projects: a. Where the discharges from the construction activities are tributary to waters of the state classified as AA or AA-s; and b. Which disturb one or more acres of land with no existing impervious cover, and c. Which are undertaken on land with a Soil Slope Phase that is identified as an E or F, or the map unit name is inclusive of 25% or greater slope, on the United States Department of Agriculture ("USDA") Soil Survey for the County where the disturbance will occur. 7, Construction activities for linear transportation projects and linear utility projects: a. Where the discharges from the construction activities are tributary to waters of the state classified as AA or AA-s; and b. Which disturb two or more acres of land with no existing impervious cover, and c. Which are undertaken on land with a Soil Slope Phase that is identified as an E or F, or the map unit name is inclusive of 25% or greater slope, on the USDA Soil Survey for the County where the disturbance will occur. 10 (Part I.F.8) 8. Construction activities that have the potential to affect an historic property, unless there is documentation that such impacts have been resolved. The following documentation necessary to demonstrate eligibility with this requirement shall be maintained on site in accordance with Part II.C.2 of this permit and made available to the Department in accordance with Part VII.F of this permit: a. Documentation that the construction activity is not within an archeologically sensitive area indicated on the sensitivity map, and that the construction activity is not located on or immediately adjacent to a property listed or determined to be eligible for listing on the National or State Registers of Historic Places, and that there is no new permanent building on the construction site within the following distances from a building, structure, or object that is more than 50 years old, or if there is such a new permanent building on the construction site within those parameters that NYS Office of Parks, Recreation and Historic Preservation (OPRHP), a Historic Preservation Commission of a Certified Local Government, or a qualified preservation professional has determined that the building, structure, or object more than 50 years old is not historically/archeologically significant. ■ 1-5 acres of disturbance - 20 feet ■ 5-20 acres of disturbance - 50 feet ■ 20+ acres of disturbance - 100 feet, or b. DEC consultation form sent to OPRHP, and copied to the NYS DEC Agency Historic Preservation Officer (APO), and (i) the State Environmental Quality Review (SEAR) Environmental Assessment Form (EAF) with a negative declaration or the Findings Statement, with documentation of OPRHP's agreement with the resolution; or (ii) documentation from OPRHP that the construction activity will result in No Impact; or (iii) documentation from OPRHP providing a determination of No Adverse Impact; or (iv) a Letter of Resolution signed by the owner/operator, OPRHP and the DEC APO which allows for this construction activity to be eligible for coverage under the general permit in terms of the State Historic Preservation Act (SHPA); or c. Documentation of satisfactory compliance with Section 106 of the National Historic Preservation Act for a coterminous project area: (i) No Affect (ii) No Adverse Affect 11 (Part I.F.8.c.iii) (iii) Executed Memorandum of Agreement, or d. Documentation that: (i) SHPA Section 14.09 has been completed by NYS DEC or another state agency. 9. Discharges from construction activities that are subject to an existing SPDES individual or general permit where a SPDES permit for construction activity has been terminated or denied; or where the owner or operator has failed to renew an expired individual permit. Part II. OBTAINING PERMIT COVERAGE A.Notice of Intent (NOI) Submittal 1. An owner or operator of a construction activity that is not subject to the requirements of a regulated, traditional land use control MS4 must first prepare a SWPPP in accordance with all applicable requirements of this permit and then submit a completed NOI form to the Department in order to be authorized to discharge under this permit. An owner or operator shall use either the electronic (eNOI) or paper version of the NOI that the Department prepared. Both versions of the NOI are located on the Department's website (http://www.dec.ny.gov/ ). The paper version of the NOI shall be signed in accordance with Part VII.H. of this permit and submitted to the following address. NOTICE OF INTENT NYS DEC, Bureau of Water Permits 625 Broadway, 4t" Floor Albany, New York 12233-3505 2. An owner or operator of a construction activity that is subject to the requirements of a regulated, traditional land use control MS4 must first prepare a SWPPP in accordance with all applicable requirements of this permit and then have its SWPPP reviewed and accepted by the regulated, traditional land use control MS4 prior to submitting the NOI to the Department. The owner or operator shall have the "MS4 SWPPP Acceptance" form signed in accordance with Part VII.H., and then submit that form along with a completed NOI to the Department. An owner or operator shall use either the electronic (eNOI) or paper version of the NOI. The paper version of the NOI shall be signed in accordance with Part VI 1.H. of this permit and submitted to the address in Part II.A.1. 12 (Part II.A.2) The requirement for an owner or operator to have its SWPPP reviewed and accepted by the MS4 prior to submitting the NOI to the Department does not apply to an owner or operator that is obtaining permit coverage in accordance with the requirements in Part II.E. (Change of Owner or Operator) or where the owner or operator of the construction activity is the regulated, traditional land use control MS4. 3. The owner or operator shall have the SWPPP preparer sign the "SWPPP Preparer Certification" statement on the NOI prior to submitting the form to the Department. 4. As of the date the NOI is submitted to the Department, the owneroroperator shall make the NOI and SWPPP available for review and copying in accordance with the requirements in Part VII.F. of this permit. B. Permit Authorization 1, An owner or operator shall not commence construction activity until their authorization to discharge under this permit goes into effect. 2. Authorization to discharge under this permit will be effective when the owner or operator has satisfied all of the following criteria: a. project review pursuant to the State Environmental Quality Review Act ("SEQRA") have been satisfied, when SEQRA is applicable. See the Department's website (http://www.dec.ny.gov/) for more information, b. where required, all necessary Department permits subject to the Uniform Procedures Act ("UPA') (see 6 NYCRR Part 621) have been obtained, unless otherwise notified by the Department pursuant to 6 NYCRR 621.3(a)(4). Owners or operators of construction activities that are required to obtain UPA permits must submit a preliminary SWPPP to the appropriate DEC Permit Administrator at the Regional Office listed in Appendix F at the time all other necessary UPA permit applications are submitted. The preliminary SWPPP must include sufficient information to demonstrate that the construction activity qualifies for authorization under this permit, c. the final SWPPP has been prepared, and d. a complete NOI has been submitted to the Department in accordance with the requirements of this permit. 3. An owner oroperatorthat has satisfied the requirements of Part 11.B.2 above 13 (Part II.6.3) will be authorized to discharge stormwater from their construction activity in accordance with the following schedule: a. For construction activities that are not subject to the requirements of a regulated, traditional land use control MS4: (i) Five (5) business days from the date the Department receives a complete electronic version of the NOI (eNO1) for construction activities with a SWPPP that has been prepared in conformance with the design criteria in the technical standard referenced in Part III.6.1 and the performance criteria in the technical standard referenced in Parts III.B., 2 or 3, for construction activities that require post-construction stormwater management practices pursuant to Part III.C.; or (ii) Sixty (60) business days from the date the Department receives a complete NOI (electronic or paper version) for construction activities with a SWPPP that has not been prepared in conformance with the design criteria in technical standard referenced in Part I I1.B.1. or, for construction activities that require post-construction stormwater management practices pursuant to Part III.C., the performance criteria in the technical standard referenced in Parts III.B., 2 or 3, or; (iii) Ten (10) business days from the date the Department receives a complete paper version of the NOI for construction activities with a SWPPP that has been prepared in conformance with the design criteria in the technical standard referenced in Part III.6.1 and the performance criteria in the technical standard referenced in Parts III.B., 2 or 3, for construction activities that require post- construction stormwater management practices pursuant to Part III.C. b. For construction activities that are subject to the requirements of a regulated, traditional land use control MS4: (i) Five (5) business days from the date the Department receives both a complete electronic version of the NOI (eNO1) and signed "MS4 SWPPP Acceptance" form, or (ii) Ten (10) business days from the date the Department receives both a complete paper version of the NOI and signed "MS4 SWPPP Acceptance" form. 4. The Department may suspend or deny an owner's or operator's coverage 14 (Part II.6.4) under this permit if the Department determines that the SWPPP does not meet the permit requirements. In accordance with statute, regulation, and the terms and conditions of this permit, the Department may deny coverage under this permit and require submittal of an application for an individual SPDES permit based on a review of the NOI or other information pursuant to Part II. 5. Coverage under this permit authorizes stormwater discharges from only those areas of disturbance that are identified in the NOI. If an owner or operator wishes to have stormwater discharges from future or additional areas of disturbance authorized, they must submit a new NOI that addresses that phase of the development, unless otherwise notified by the Department. The owner or operator shall not commence construction activity on the future or additional areas until their authorization to discharge under this permit goes into effect in accordance with Part I I.B. of this permit. C. General Requirements For Owners or Operators With Permit Coverage 1, The owner or operator shall ensure that the provisions of the SWPPP are implemented from the commencement of construction activity until all areas of disturbance have achieved final stabilization and the Notice of Termination ("NOT") has been submitted to the Department in accordance with Part V. of this permit. This includes any changes made to the SWPPP pursuant to Part III.A.4. of this permit. 2. The owner or operator shall maintain a copy of the General Permit (GP-0- 15-002), NOI, NOI Acknowledgment Letter, SWPPP, MS4 SWPPP Acceptance form, inspection reports, and all documentation necessary to demonstrate eligibility with this permit at the construction site until all disturbed areas have achieved final stabilization and the NOT has been submitted to the Department. The documents must be maintained in a secure location, such as a job trailer, on-site construction office, or mailbox with lock. The secure location must be accessible during normal business hours to an individual performing a compliance inspection. 3. The owner or operator of a construction activity shall not disturb greater than five (5) acres of soil at any one time without prior written authorization from the Department or, in areas under the jurisdiction of a regulated, traditional land use control MS4, the regulated, traditional land use control MS4 (provided the regulated, traditional land use control MS4 is not the owner or operator of the construction activity). At a minimum, the owner or operator must comply with the following requirements in order to be authorized to disturb greater than five (5) acres of soil at any one time: a. The owner or operator shall 15 (Part II.C.3.a) have a qualified inspector conduct at least two (2) site inspections in accordance with Part IV.C. of this permit every seven (7) calendar days, for as long as greater than five (5) acres of soil remain disturbed. The two (2) inspections shall be separated by a minimum of two (2) full calendar days. b. In areas where soil disturbance activity has temporarily or permanently ceased, the application of soil stabilization measures must be initiated by the end of the next business day and completed within seven (7) days from the date the current soil disturbance activity ceased. The soil stabilization measures selected shall be in conformance with the technical standard, New York State Standards and Specifications for Erosion and Sediment Control, dated August 2005. c. The owner or operator shall prepare a phasing plan that defines maximum disturbed area per phase and shows required cuts and fills. d. The owner or operator shall install any additional site specific practices needed to protect water quality. e. The owner or operator shall include the requirements above in their SWPPP. 4. In accordance with statute, regulations, and the terms and conditions of this permit, the Department may suspend or revoke an owner's or operator's coverage under this permit at any time if the Department determines that the SWPPP does not meet the permit requirements. Upon a finding of significant non-compliance with the practices described in the SWPPP or violation of this permit, the Department may order an immediate stop to all activity at the site until the non-compliance is remedied. The stop work order shall be in writing, describe the non-compliance in detail, and be sent to the owner or operator. 5. For construction activities that are subject to the requirements of a regulated, traditional land use control MS4, the owner or operator shall notify the regulated, traditional land use control MS4 in writing of any planned amendments or modifications to the post-construction stormwater management practice component of the SWPPP required by Part IIIA. 4. and 5. of this permit. Unless otherwise notified by the regulated, traditional land use control MS4, the owner or operator shall have the SWPPP amendments or modifications reviewed and accepted by the regulated, traditional land use control MS4 prior to commencing construction of the post-construction stormwater management practice 16 (Part II.D) D. Permit Coverage for Discharges Authorized Under GP-0-10-001 1. Upon renewal of SPDES General Permit for Stormwater Discharges from Construction Activity (Permit No. GP-0-10-001), an owner or operator of a construction activity with coverage under GP-0-10-001, as of the effective date of GP-0-15-002, shall be authorized to discharge in accordance with GP-0-15-002, unless otherwise notified by the Department. An owner or operator may continue to implement the technical/design components of the post-construction stormwater management controls provided that such design was done in conformance with the technical standards in place at the time of initial project authorization. However, they must comply with the other, non-design provisions of GP-0-15-002. E. Change of Owner or Operator 2. When property ownership changes or when there is a change in operational control over the construction plans and specifications, the original owner or operator must notify the new owner or operator, in writing, of the requirement to obtain permit coverage by submitting a NOI with the Department. Once the new owner or operator obtains permit coverage, the original owner or operator shall then submit a completed NOT with the name and permit identification number of the new owner or operator to the Department at the address in Part II.A.1. of this permit. If the original owner or operator maintains ownership of a portion of the construction activity and will disturb soil, they must maintain their coverage under the permit. Permit coverage for the new owner or operatorwill be effective as of the date the Department receives a complete NOI, provided the original owner or operatorwas not subject to a sixty (60) business day authorization period that has not expired as of the date the Department receives the NOI from the new owner or operator. 17 (Part III) Part III. STORMWATER POLLUTION PREVENTION PLAN (SWPPP) A. General SWPPP Requirements 1. A SWPPP shall be prepared and implemented by the owner or operator of each construction activity covered by this permit. The SWPPP must document the selection, design, installation, implementation and maintenance of the control measures and practices that will be used to meet the effluent limitations in Part I.B. of this permit and where applicable, the post-construction stormwater management practice requirements in Part I.C. of this permit. The SWPPP shall be prepared prior to the submittal of the NOI. The NOI shall be submitted to the Department prior to the commencement of construction activity. A copy of the completed, final NOI shall be included in the SWPPP. 2, The SWPPP shall describe the erosion and sediment control practices and where required, post-construction stormwater management practices that will be used and/or constructed to reduce the pollutants in stormwater discharges and to assure compliance with the terms and conditions of this permit. In addition, the SWPPP shall identify potential sources of pollution which may reasonably be expected to affect the quality of stormwater discharges. . All SWPPPs that require the post-construction stormwater management practice component shall be prepared by a qualified professional that is knowledgeable in the principles and practices of stormwater management and treatment. 4, The owner or operator must keep the SWPPP current so that it at all times accurately documents the erosion and sediment controls practices that are being used or will be used during construction, and all post-construction stormwater management practices that will be constructed on the site. At a minimum, the owner or operator shall amend the SWPPP: a. whenever the current provisions prove to be ineffective in minimizing pollutants in stormwater discharges from the site; b. whenever there is a change in design, construction, or operation at the construction site that has or could have an effect on the discharge of pollutants; and c. to address issues or deficiencies identified during an inspection by the qualified inspector, the Department or other regulatory authority. a. The Department may notify the owner or operator at any time that the 18 (Part III.A.5) SWPPP does not meet one or more of the minimum requirements of this permit. The notification shall be in writing and identify the provisions of the SWPPP that require modification. Within fourteen (14) calendar days of such notification, or as otherwise indicated by the Department, the owner or operator shall make the required changes to the SWPPP and submit written notification to the Department that the changes have been made. If the owner or operator does not respond to the Department's comments in the specified time frame, the Department may suspend the owner's or operator's coverage under this permit or require the owner or operator to obtain coverage under an individual SPDES permit in accordance with Part II.C.4. of this permit. 6. Prior to the commencement of construction activity, the owner or operator must identify the contractor(s) and subcontractor(s) that will be responsible for installing, constructing, repairing, replacing, inspecting and maintaining the erosion and sediment control practices included in the SWPPP; and the contractor(s) and subcontractor(s) that will be responsible for constructing the post-construction stormwater management practices included in the SWPPP. The owner or operator shall have each of the contractors and subcontractors identify at least one person from their company that will be responsible for implementation of the SWPPP. This person shall be known as the trained contractor. The owner or operator shall ensure that at least one trained contractor is on site on a daily basis when soil disturbance activities are being performed. The owner or operator shall have each of the contractors and subcontractors identified above sign a copy of the following certification statement below before they commence any construction activity: "I hereby certify under penalty of law that I understand and agree to comply with the terms and conditions of the SWPPP and agree to implement any corrective actions identified by the qualified inspector during a site inspection. I also understand that the owner or operator must comply with the terms and conditions of the most current version of the New York State Pollutant Discharge Elimination System ("SPDES") general permit for stormwater discharges from construction activities and that it is unlawful for any person to cause or contribute to a violation of water quality standards. Furthermore, I am aware that there are significant penalties for submitting false information, that I do not believe to be true, including the possibility of fine and imprisonment for knowing violations" In addition to providing the certification statement above, the certification page must also identify the specific elements of the SWPPP that each contractor and subcontractor will be responsible for and include the name and title of the person providing the signature; the name and title of the 19 (Part III.A.6) trained contractor responsible for SWPPP implementation; the name, address and telephone number of the contracting firm; the address (or other identifying description) of the site; and the date the certification statement is signed. The owner or operator shall attach the certification statement(s) to the copy of the SWPPP that is maintained at the construction site. If new or additional contractors are hired to implement measures identified in the SWPPP after construction has commenced, they must also sign the certification statement and provide the information listed above. 7, For projects where the Department requests a copy of the SWPPP or inspection reports, the owner or operator shall submit the documents in both electronic(PDF only) and paper format within five (5) business days, unless otherwise notified by the Department. B. Required SWPPP Contents 1, Erosion and sediment control component - All SWPPPs prepared pursuant to this permit shall include erosion and sediment control practices designed in conformance with the technical standard, New York State Standards and Specifications for Erosion and Sediment Control, dated August 2005. Where erosion and sediment control practices are not designed in conformance with the design criteria included in the technical standard, the owner or operator must demonstrate equivalence to the technical standard. At a minimum, the erosion and sediment control component of the SWPPP shall include the following: a. Background information about the scope of the project, including the location, type and size of project; b. A site map/construction drawing(s) for the project, including a general location map. At a minimum, the site map shall show the total site area; all improvements; areas of disturbance; areas that will not be disturbed; existing vegetation; on-site and adjacent off-site surface water(s); flood plain/floodway boundaries; wetlands and drainage patterns that could be affected by the construction activity; existing and final contours ; locations of different soil types with boundaries; material, waste, borrow or equipment storage areas located on adjacent properties; and location(s) of the stormwater discharge(s); c. A description of the soil(s) present at the site, including an identification of the Hydrologic Soil Group (HSG); d. A construction phasing plan and sequence of operations describing the intended order of construction activities, including clearing and grubbing, excavation and grading, utility and infrastructure installation and any other 20 (Part 111.13.1 A) activity at the site that results in soil disturbance; e. A description of the minimum erosion and sediment control practices to be installed or implemented for each construction activity that will result in soil disturbance. Include a schedule that identifies the timing of initial placement or implementation of each erosion and sediment control practice and the minimum time frames that each practice should remain in place or be implemented; f. A temporary and permanent soil stabilization plan that meets the requirements of this general permit and the technical standard, New York State Standards and Specifications for Erosion and Sediment Control, dated August 2005, for each stage of the project, including initial land clearing and grubbing to project completion and achievement of final stabilization; g. A site map/construction drawing(s) showing the specific location(s), size(s), and length(s) of each erosion and sediment control practice; h. The dimensions, material specifications, installation details, and operation and maintenance requirements for all erosion and sediment control practices. Include the location and sizing of any temporary sediment basins and structural practices that will be used to divert flows from exposed soils; i. A maintenance inspection schedule for the contractor(s) identified in Part III.A.6. of this permit, to ensure continuous and effective operation of the erosion and sediment control practices. The maintenance inspection schedule shall be in accordance with the requirements in the technical standard, New York State Standards and Specifications for Erosion and Sediment Control, dated August 2005; j. A description of the pollution prevention measures that will be used to control litter, construction chemicals and construction debris from becoming a pollutant source in the stormwater discharges; k. A description and location of any stormwater discharges associated with industrial activity other than construction at the site, including, but not limited to, stormwater discharges from asphalt plants and concrete plants located on the construction site; and I. Identification of any elements of the design that are not in conformance with the design criteria in the technical standard, New York State Standards and Specifications for Erosion and Sediment Control, dated August 2005. Include the reason for the deviation or alternative design 21 (Part III.B.1.1) and provide information which demonstrates that the deviation or alternative design is equivalent to the technical standard. 2, Post-construction stormwater management practice component — The owner or operator of any construction project identified in Table 2 of Appendix B as needing post-construction stormwater management practices shall prepare a SWPPP that includes practices designed in conformance with the applicable sizing criteria in Part I.C.2.a., c. or d. of this permit and the performance criteria in the technical standard, New York State Stormwater Management Design Manual dated January 2015 Where post-construction stormwater management practices are not designed in conformance with the performance criteria in the technical standard, the owner or operator must include in the SWPPP the reason(s) for the deviation or alternative design and provide information which demonstrates that the deviation or alternative design is equivalent to the technical standard. The post-construction stormwater management practice component of the SWPPP shall include the following: a. Identification of all post-construction stormwater management practices to be constructed as part of the project. Include the dimensions, material specifications and installation details for each post-construction stormwater management practice; b. A site map/construction drawing(s) showing the specific location and size of each post-construction stormwater management practice; c. A Stormwater Modeling and Analysis Report that includes: (i) Map(s) showing pre-development conditions, including watershed/subcatchments boundaries, flow paths/routing, and design points; (ii) Map(s) showing post-development conditions, including watershed/subcatchments boundaries, flow paths/routing, design points and post-construction stormwater management practices; (iii) Results of stormwater modeling (i.e. hydrology and hydraulic analysis) for the required storm events. Include supporting calculations (model runs), methodology, and a summary table that compares pre and post-development runoff rates and volumes for the different storm events; (iv) Summary table, with supporting calculations, which demonstrates 22 (Part 111.B.2.c.iv) that each post-construction stormwater management practice has been designed in conformance with the sizing criteria included in the Design Manual; (v) Identification of any sizing criteria that is not required based on the requirements included in Part I.C. of this permit; and (vi) Identification of any elements of the design that are not in conformance with the performance criteria in the Design Manual. Include the reason(s) for the deviation or alternative design and provide information which demonstrates that the deviation or alternative design is equivalent to the Design Manual; d. Soil testing results and locations (test pits, borings); e. Infiltration test results, when required; and f. An operations and maintenance plan that includes inspection and maintenance schedules and actions to ensure continuous and effective operation of each post-construction stormwater management practice. The plan shall identify the entity that will be responsible for the long term operation and maintenance of each practice. 3. Enhanced Phosphorus Removal Standards - All construction projects identified in Table 2 of Appendix B that are located in the watersheds identified in Appendix C shall prepare a SWPPP that includes post- construction stormwater management practices designed in conformance with the applicable sizing criteria in Part I.C.2. b., c. or d. of this permit and the performance criteria, Enhanced Phosphorus Removal Standards included in the Design Manual. At a minimum, the post-construction stormwater management practice component of the SWPPP shall include items 2.a - 2.f. above. C. Required SWPPP Components by Project Type Unless otherwise notified by the Department, owners or operators of construction activities identified in Table 1 of Appendix B are required to prepare a SWPPP that only includes erosion and sediment control practices designed in conformance with Part 111.8.1 of this permit. Owners or operators of the construction activities identified in Table 2 of Appendix B shall prepare a SWPPP that also includes post-construction stormwater management practices designed in conformance with Part 111.6.2 or 3 of this permit. 23 (Part IV) Part IV. INSPECTION AND MAINTENANCE REQUIREMENTS A. General Construction Site Inspection and Maintenance Requirements 1. The owner or operator must ensure that all erosion and sediment control practices (including pollution prevention measures) and all post- construction stormwater management practices identified in the SWPPP are inspected and maintained in accordance with Part IV.B. and C. of this permit. 2. The terms of this permit shall not be construed to prohibit the State of New York from exercising any authority pursuant to the ECL, common law or federal law, or prohibit New York State from taking any measures, whether civil or criminal, to prevent violations of the laws of the State of New York, or protect the public health and safety and/or the environment. B. Contractor Maintenance Inspection Requirements 1, The owner or operator of each construction activity identified in Tables 1 and 2 of Appendix B shall have a trained contractor inspect the erosion and sediment control practices and pollution prevention measures being implemented within the active work area daily to ensure that they are being maintained in effective operating condition at all times. If deficiencies are identified, the contractor shall begin implementing corrective actions within one business day and shall complete the corrective actions in a reasonable time frame. 2, For construction sites where soil disturbance activities have been temporarily suspended (e.g. winter shutdown) and temporary stabilization measures have been applied to all disturbed areas, the trained contractor can stop conducting the maintenance inspections. The trained contractor shall begin conducting the maintenance inspections in accordance with Part IV.B.1. of this permit as soon as soil disturbance activities resume. . For construction sites where soil disturbance activities have been shut down with partial project completion, the trained contractor can stop conducting the maintenance inspections if all areas disturbed as of the project shutdown date have achieved final stabilization and all post-construction stormwater management practices required for the completed portion of the project have been constructed in conformance with the SWPPP and are operational. C. Qualified Inspector Inspection Requirements 24 (Part IV.C) The owner or operator shall have a qualified inspector conduct site inspections in conformance with the following requirements: [Note: The trained contractor identified in Part III.A.6. and IV.B. of this permit cannot conduct the qualified inspector site inspections unless they meet the qualified inspector qualifications included in Appendix A. In order to perform these inspections, the trained contractorwould have to be a- - licensed Professional Engineer, - Certified Professional in Erosion and Sediment Control (CPESC), - Registered Landscape Architect, or - someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided they have received four (4) hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity]. 1, A qualified inspector shall conduct site inspections for all construction activities identified in Tables 1 and 2 of Appendix B, with the exception of: a. the construction of a single family residential subdivision with 25% or less impervious cover at total site build-out that involves a soil disturbance of one (1)or more acres of land but less than five (5) acres and is not located in one of the watersheds listed in Appendix C and not directly discharging to one of the 303(d) segments listed in Appendix E; b. the construction of a single family home that involves a soil disturbance of one (1)or more acres of land but less than five (5) acres and is not located in one of the watersheds listed in Appendix C and not directly discharging to one of the 303(d) segments listed in Appendix E; c. construction on agricultural property that involves a soil disturbance of one (1) or more acres of land but less than five (5) acres; and d. construction activities located in the watersheds identified in Appendix D that involve soil disturbances between five thousand (5,000) square feet and one (1) acre of land. 2, Unless otherwise notified by the Department, the qualified inspector shall conduct site inspections in accordance with the following timetable: a. For construction sites where soil disturbance activities are on-going, the qualified inspector shall conduct a site inspection at least once every seven (7) calendar days. b. For construction sites where soil disturbance activities are on-going and 25 (Part IV.C.2.b) the owner or operator has received authorization in accordance with Part II.C.3 to disturb greater than five (5) acres of soil at any one time, the qualified inspector shall conduct at least two (2) site inspections every seven (7) calendar days. The two (2) inspections shall be separated by a minimum of two (2) full calendar days. c. For construction sites where soil disturbance activities have been temporarily suspended (e.g. winter shutdown) and temporary stabilization measures have been applied to all disturbed areas, the qualified inspector shall conduct a site inspection at least once every thirty (30) calendar days. The owner or operator shall notify the DOW Water (SPDES) Program contact at the Regional Office (see contact information in Appendix F) or, in areas under the jurisdiction of a regulated, traditional land use control MS4, the regulated, traditional land use control MS4 (provided the regulated, traditional land use control MS4 is not the owner or operator of the construction activity) in writing prior to reducing the frequency of inspections. d. For construction sites where soil disturbance activities have been shut down with partial project completion, the qualified inspector can stop conducting inspections if all areas disturbed as of the project shutdown date have achieved final stabilization and all post-construction stormwater management practices required for the completed portion of the project have been constructed in conformance with the SWPPP and are operational. The owner or operator shall notify the DOW Water (SPDES) Program contact at the Regional Office (see contact information in Appendix F) or, in areas under the jurisdiction of a regulated, traditional land use control MS4, the regulated, traditional land use control MS4 (provided the regulated, traditional land use control MS4 is not the owner or operator of the construction activity) in writing prior to the shutdown. If soil disturbance activities are not resumed within 2 years from the date of shutdown, the owner or operator shall have the qualified inspector perform a final inspection and certify that all disturbed areas have achieved final stabilization, and all temporary, structural erosion and sediment control measures have been removed; and that all post-construction stormwater management practices have been constructed in conformance with the SWPPP by signing the "Final Stabilization" and "Post-Construction Stormwater Management Practice" certification statements on the NOT. The owner or operator shall then submit the completed NOT form to the address in Part II.A.1 of this permit. e. For construction sites that directly discharge to one of the 303(d) segments listed in Appendix E or is located in one of the watersheds listed in Appendix C, the qualified inspector shall conduct at least two (2) site inspections every seven (7) calendar days. The two (2) inspections shall 26 (Part IV.C.2.e) be separated by a minimum of two (2) full calendar days. . At a minimum, the qualified inspector shall inspect all erosion and sediment control practices and pollution prevention measures to ensure integrity and effectiveness, all post-construction stormwater management practices under construction to ensure that they are constructed in conformance with the SWPPP, all areas of disturbance that have not achieved final stabilization, all points of discharge to natural surface waterbodies located within, or immediately adjacent to, the property boundaries of the construction site, and all points of discharge from the construction site. 4, The qualified inspector shall prepare an inspection report subsequent to each and every inspection. At a minimum, the inspection report shall include and/or address the following: a. Date and time of inspection; b. Name and title of person(s) performing inspection; c. A description of the weather and soil conditions (e.g. dry, wet, saturated) at the time of the inspection; d. A description of the condition of the runoff at all points of discharge from the construction site. This shall include identification of any discharges of sediment from the construction site. Include discharges from conveyance systems (i.e. pipes, culverts, ditches, etc.) and overland flow; e. A description of the condition of all natural surface waterbodies located within, or immediately adjacent to, the property boundaries of the construction site which receive runoff from disturbed areas. This shall include identification of any discharges of sediment to the surface waterbody; f. Identification of all erosion and sediment control practices and pollution prevention measures that need repair or maintenance; g. Identification of all erosion and sediment control practices and pollution prevention measures that were not installed properly or are not functioning as designed and need to be reinstalled or replaced; h. Description and sketch of areas with active soil disturbance activity, areas that have been disturbed but are inactive at the time of the inspection, and areas that have been stabilized (temporary and/or final) since the last inspection; 27 (Part IV.C.4.i) i. Current phase of construction of all post-construction stormwater management practices and identification of all construction that is not in conformance with the SWPPP and technical standards; j. Corrective action(s) that must be taken to install, repair, replace or maintain erosion and sediment control practices and pollution prevention measures; and to correct deficiencies identified with the construction of the post-construction stormwater management practice(s); k. Identification and status of all corrective actions that were required by previous inspection; and I. Digital photographs, with date stamp, that clearly show the condition of all practices that have been identified as needing corrective actions. The qualified inspector shall attach paper color copies of the digital photographs to the inspection report being maintained onsite within seven (7) calendar days of the date of the inspection. The qualified inspector shall also take digital photographs, with date stamp, that clearly show the condition of the practice(s) after the corrective action has been completed. The qualified inspector shall attach paper color copies of the digital photographs to the inspection report that documents the completion of the corrective action work within seven (7) calendar days of that inspection. 5. Within one business day of the completion of an inspection, the qualified inspector shall notify the owner or operator and appropriate contractor or subcontractor identified in Part III.A.6. of this permit of any corrective actions that need to be taken. The contractor or subcontractor shall begin implementing the corrective actions within one business day of this notification and shall complete the corrective actions in a reasonable time frame. 6. All inspection reports shall be signed by the qualified inspector. Pursuant to Part II.C.2. of this permit, the inspection reports shall be maintained on site with the SWPPP. Part V. TERMINATION OF PERMIT COVERAGE A. Termination of Permit Coverage 1, An owner or operator that is eligible to terminate coverage under this permit must submit a completed NOT form to the address in Part II.A.1 of this permit. The NOT form shall be one which is associated with this permit, signed in accordance with Part VII.H of this permit. 28 (Part V.A.2) 2. An owner or operator may terminate coverage when one or more the following conditions have been met- a. Total project completion -All construction activity identified in the SWPPP has been completed; and all areas of disturbance have achieved final stabilization; and all temporary, structural erosion and sediment control measures have been removed; and all post-construction stormwater management practices have been constructed in conformance with the SWPPP and are operational; b. Planned shutdown with partial project completion - All soil disturbance activities have ceased; and all areas disturbed as of the project shutdown date have achieved final stabilization; and all temporary, structural erosion and sediment control measures have been removed; and all post- construction stormwater management practices required for the completed portion of the project have been constructed in conformance with the SWPPP and are operational; c. A new owner or operator has obtained coverage under this permit in accordance with Part II.E. of this permit. d. The owner or operator obtains coverage under an alternative SPDES general permit or an individual SPDES permit. 3. For construction activities meeting subdivision 2a. or 2b. of this Part, the owner or operator shall have the qualified inspector perform a final site inspection prior to submitting the NOT. The qualified inspector shall, by signing the "Final Stabilization" and "Post-Construction Stormwater Management Practice certification statements on the NOT, certify that all the requirements in Part V.A.2.a. or b. of this permit have been achieved. 4, For construction activities that are subject to the requirements of a regulated, traditional land use control MS4 and meet subdivision 2a. or 2b. of this Part, the owner or operator shall have the regulated, traditional land use control MS4 sign the "MS4 Acceptance" statement on the NOT in accordance with the requirements in Part VII.H. of this permit. The regulated, traditional land use control MS4 official, by signing this statement, has determined that it is acceptable for the owner or operator to submit the NOT in accordance with the requirements of this Part. The regulated, traditional land use control MS4 can make this determination by performing a final site inspection themselves or by accepting the qualified inspector's final site inspection certification(s) required in Part V.A.3. of this permit. 29 (Part V.A.5) 5. For construction activities that require post-construction stormwater management practices and meet subdivision 2a. of this Part, the owner or operator must, prior to submitting the NOT, ensure one of the following: a. the post-construction stormwater management practice(s) and any right- of-way(s) needed to maintain such practice(s) have been deeded to the municipality in which the practice(s) is located, b. an executed maintenance agreement is in place with the municipality that will maintain the post-construction stormwater management practice(s), c. for post-construction stormwater management practices that are privately owned, the owner or operator has a mechanism in place that requires operation and maintenance of the practice(s) in accordance with the operation and maintenance plan, such as a deed covenant in the owner or operator's deed of record, d. for post-construction stormwater management practices that are owned by a public or private institution (e.g. school, university, hospital), government agency or authority, or public utility; the owner or operator has policy and procedures in place that ensures operation and maintenance of the practices in accordance with the operation and maintenance plan. Part VI. REPORTING AND RETENTION OF RECORDS A. Record Retention The owner or operator shall retain a copy of the NOI, NOI Acknowledgment Letter, SWPPP, MS4 SWPPP Acceptance form and any inspection reports that were prepared in conjunction with this permit for a period of at least five (5) years from the date that the Department receives a complete NOT submitted in accordance with Part V. of this general permit. B. Addresses With the exception of the NOI, NOT, and MS4 SWPPP Acceptance form (which must be submitted to the address referenced in Part I I.A.1 of this permit), all written correspondence requested by the Department, including individual permit applications, shall be sent to the address of the appropriate DOW Water (SPDES) Program contact at the Regional Office listed in Appendix F. 30 (Part VII) Part VII. STANDARD PERMIT CONDITIONS A. Duty to Comply The owner or operator must comply with all conditions of this permit. All contractors and subcontractors associated with the project must comply with the terms of the SWPPP. Any non-compliance with this permit constitutes a violation of the Clean Water Act (CWA) and the ECL and is grounds for an enforcement action against the owner or operator and/or the contractor/subcontractor; permit revocation, suspension or modification; or denial of a permit renewal application. Upon a finding of significant non-compliance with this permit or the applicable SWPPP, the Department may order an immediate stop to all construction activity at the site until the non-compliance is remedied. The stop work order shall be in writing, shall describe the non-compliance in detail, and shall be sent to the owner or operator. If any human remains or archaeological remains are encountered during excavation, the owner or operator must immediately cease, or cause to cease, all construction activity in the area of the remains and notify the appropriate Regional Water Engineer (RWE). Construction activity shall not resume until written permission to do so has been received from the RWE. B. Continuation of the Expired General Permit This permit expires five (5) years from the effective date. If a new general permit is not issued prior to the expiration of this general permit, an owner or operator with coverage under this permit may continue to operate and discharge in accordance with the terms and conditions of this general permit, if it is extended pursuant to the State Administrative Procedure Act and 6 NYCRR Part 621, until a new general permit is issued. C. Enforcement Failure of the owner or operator, its contractors, subcontractors, agents and/or assigns to strictly adhere to any of the permit requirements contained herein shall constitute a violation of this permit. There are substantial criminal, civil, and administrative penalties associated with violating the provisions of this permit. Fines of up to $37,500 per day for each violation and imprisonment for up to fifteen (15) years may be assessed depending upon the nature and degree of the offense. D. Need to Halt or Reduce Activity Not a Defense It shall not be a defense for an owner or operator in an enforcement action that it would have been necessary to halt or reduce the construction activity in order to maintain compliance with the conditions of this permit. 31 (Part VII.E) E. Duty to Mitigate The owner or operator and its contractors and subcontractors shall take all reasonable steps to minimize or prevent any discharge in violation of this permit which has a reasonable likelihood of adversely affecting human health or the environment. F. Duty to Provide Information The owner or operator shall furnish to the Department, within a reasonable specified time period of a written request, all documentation necessary to demonstrate eligibility and any information to determine compliance with this permit or to determine whether cause exists for modifying or revoking this permit, or suspending or denying coverage under this permit, in accordance with the terms and conditions of this permit. The NOI, SWPPP and inspection reports required by this permit are public documents that the owner or operator must make available for review and copying by any person within five (5) business days of the owner or operator receiving a written request by any such person to review these documents. Copying of documents will be done at the requester's expense. G. Other Information When the owner or operator becomes aware that they failed to submit any relevant facts, or submitted incorrect information in the NOI or in any of the documents required by this permit , or have made substantive revisions to the SWPPP (e.g. the scope of the project changes significantly, the type of post-construction stormwater management practice(s) changes, there is a reduction in the sizing of the post- construction stormwater management practice, or there is an increase in the disturbance area or impervious area), which were not reflected in the original NOI submitted to the Department, they shall promptly submit such facts or information to the Department using the contact information in Part II.A. of this permit. Failure of the owner or operator to correct or supplement any relevant facts within five (5) business days of becoming aware of the deficiency shall constitute a violation of this permit. H. Signatory Requirements 1, All NOls and NOTs shall be signed as follows: a. For a corporation these forms shall be signed by a responsible corporate officer. For the purpose of this section, a responsible corporate officer means: (i) a president, secretary, treasurer, or vice-president of the 32 (Part VII.H.1.a.i) corporation in charge of a principal business function, or any other person who performs similar policy or decision-making functions for the corporation; or (ii) the manager of one or more manufacturing, production or operating facilities, provided the manager is authorized to make management decisions which govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long term environmental compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures; b. For a partnership or sole proprietorship these forms shall be signed by a general partner or the proprietor, respectively; or c. For a municipality, State, Federal, or other public agency these forms shall be signed by either a principal executive officer or ranking elected official. For purposes of this section, a principal executive officer of a Federal agency includes: (i) the chief executive officer of the agency, or (ii) a senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency (e.g., Regional Administrators of EPA). 2, The SWPPP and other information requested by the Department shall be signed by a person described in Part VII.H.1. of this permit or by a duly authorized representative of that person. A person is a duly authorized representative only if: a. The authorization is made in writing by a person described in Part VII.H.1. of this permit; b. The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity, such as the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company. (A duly authorized representative may thus be either a named 33 (Part VII.H.2.b) individual or any individual occupying a named position) and, c. The written authorization shall include the name, title and signature of the authorized representative and be attached to the SWPPP. 3. All inspection reports shall be signed by the qualified inspector that performs the inspection. 4, The MS4 SWPPP Acceptance form shall be signed by the principal executive officer or ranking elected official from the regulated, traditional land use control MS4, or by a duly authorized representative of that person. It shall constitute a permit violation if an incorrect and/or improper signatory authorizes any required forms, SWPPP and/or inspection reports. I. Property Rights The issuance of this permit does not convey any property rights of any sort, nor any exclusive privileges, nor does it authorize any injury to private property nor any invasion of personal rights, nor any infringement of Federal, State or local laws or regulations. Owners or operators must obtain any applicable conveyances, easements, licenses and/or access to real property prior to commencing construction activity. J. Severability The provisions of this permit are severable, and if any provision of this permit, or the application of any provision of this permit to any circumstance, is held invalid, the application of such provision to other circumstances, and the remainder of this permit shall not be affected thereby. K. Requirement to Obtain Coverage Under an Alternative Permit 1. The Department may require any owner or operator authorized by this permit to apply for and/or obtain either an individual SPDES permit or another SPDES general permit. When the Department requires any discharger authorized by a general permit to apply for an individual SPDES permit, it shall notify the discharger in writing that a permit application is required. This notice shall include a brief statement of the reasons for this decision, an application form, a statement setting a time frame for the owner or operator to file the application for an individual SPDES permit, and a deadline, not sooner than 180 days from owner or operator receipt of the notification letter, whereby the authorization to 34 (Part VI I.K.1) discharge under this general permit shall be terminated. Applications must be submitted to the appropriate Permit Administrator at the Regional Office. The Department may grant additional time upon demonstration, to the satisfaction of the Department, that additional time to apply for an alternative authorization is necessary or where the Department has not provided a permit determination in accordance with Part 621 of this Title. 2. When an individual SPDES permit is issued to a discharger authorized to discharge under a general SPDES permit for the same discharge(s), the general permit authorization for outfalls authorized under the individual SPDES permit is automatically terminated on the effective date of the individual permit unless termination is earlier in accordance with 6 NYCRR Part 750. L. Proper Operation and Maintenance The owner or operator shall at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which are installed or used by the owner or operator to achieve compliance with the conditions of this permit and with the requirements of the SWPPP. M. Inspection and Entry The owner or operator shall allow an authorized representative of the Department, EPA, applicable county health department, or, in the case of a construction site which discharges through an MS4, an authorized representative of the MS4 receiving the discharge, upon the presentation of credentials and other documents as may be required by law, to: 1, Enter upon the owner's or operator's premises where a regulated facility or activity is located or conducted or where records must be kept under the conditions of this permit; 2, Have access to and copy at reasonable times, any records that must be kept under the conditions of this permit; and 3. Inspect at reasonable times any facilities or equipment(including monitoring and control equipment), practices or operations regulated or required by this permit. 4. Sample or monitor at reasonable times, for purposes of assuring permit compliance or as otherwise authorized by the Act or ECL, any substances or parameters at any location. 35 (Part VII.N) N. Permit Actions This permit may, at any time, be modified, suspended, revoked, or renewed by the Department in accordance with 6 NYCRR Part 621. The filing of a request by the owner or operator for a permit modification, revocation and reissuance, termination, a notification of planned changes or anticipated noncompliance does not limit, diminish and/or stay compliance with any terms of this permit. O. Definitions Definitions of key terms are included in Appendix A of this permit. P. Re-Opener Clause 1. If there is evidence indicating potential or realized impacts on water quality due to any stormwater discharge associated with construction activity covered by this permit, the owner or operator of such discharge may be required to obtain an individual permit or alternative general permit in accordance with Part VII.K. of this permit or the permit may be modified to include different limitations and/or requirements. 2. Any Department initiated permit modification, suspension or revocation will be conducted in accordance with 6 NYCRR Part 621, 6 NYCRR 750-1.18, and 6 NYCRR 750-1.20. Q. Penalties for Falsification of Forms and Reports In accordance with 6NYCRR Part 750-2.4 and 750-2.5, any person who knowingly makes any false material statement, representation, or certification in any application, record, report or other document filed or required to be maintained under this permit, including reports of compliance or noncompliance shall, upon conviction, be punished in accordance with ECL §71-1933 and or Articles 175 and 210 of the New York State Penal Law. R. Other Permits Nothing in this permit relieves the owner or operator from a requirement to obtain any other permits required by law. 36 APPENDIX A Definitions Alter Hydrology from Pre to Post-Development Conditions - means the post- development peak flow rate(s) has increased by more than 5% of the pre-developed condition for the design storm of interest (e.g. 10 yr and 100 yr). Combined Sewer - means a sewer that is designed to collect and convey both "sewage" and "stormwater". Commence (Commencement of) Construction Activities - means the initial disturbance of soils associated with clearing, grading or excavation activities; or other construction related activities that disturb or expose soils such as demolition, stockpiling of fill material, and the initial installation of erosion and sediment control practices required in the SWPPP. See definition for "Construction Activity(ies)" also. Construction Activity(ies) - means any clearing, grading, excavation, filling, demolition or stockpiling activities that result in soil disturbance. Clearing activities can include, but are not limited to, logging equipment operation, the cutting and skidding of trees, stump removal and/or brush root removal. Construction activity does not include routine maintenance that is performed to maintain the original line and grade, hydraulic capacity, or original purpose of a facility. Direct Discharge (to a specific surface waterbody) - means that runoff flows from a construction site by overland flow and the first point of discharge is the specific surface waterbody, or runoff flows from a construction site to a separate storm sewer system and the first point of discharge from the separate storm sewer system is the specific surface waterbody. Discharge(s) - means any addition of any pollutant to waters of the State through an outlet or point source. Environmental Conservation Law (ECL) - means chapter 43-B of the Consolidated Laws of the State of New York, entitled the Environmental Conservation Law. Equivalent (Equivalence) — means that the practice or measure meets all the performance, longevity, maintenance, and safety objectives of the technical standard and will provide an equal or greater degree of water quality protection. Final Stabilization - means that all soil disturbance activities have ceased and a uniform, perennial vegetative cover with a density of eighty (80) percent over the entire pervious surface has been established; or other equivalent stabilization measures, such as permanent landscape mulches, rock rip-rap or washed/crushed stone have been applied 37 on all disturbed areas that are not covered by permanent structures, concrete or pavement. General SPDES permit - means a SPDES permit issued pursuant to 6 NYCRR Part 750- 1.21 and Section 70-0117 of the ECL authorizing a category of discharges. Groundwater(s) - means waters in the saturated zone. The saturated zone is a subsurface zone in which all the interstices are filled with water under pressure greater than that of the atmosphere. Although the zone may contain gas-filled interstices or interstices filled with fluids other than water, it is still considered saturated. Historic Property— means any building, structure, site, object or district that is listed on the State or National Registers of Historic Places or is determined to be eligible for listing on the State or National Registers of Historic Places. Impervious Area (Cover) - means all impermeable surfaces that cannot effectively infiltrate rainfall. This includes paved, concrete and gravel surfaces (i.e. parking lots, driveways, roads, runways and sidewalks); building rooftops and miscellaneous impermeable structures such as patios, pools, and sheds. Infeasible — means not technologically possible, or not economically practicable and achievable in light of best industry practices. Larger Common Plan of Development or Sale - means a contiguous area where multiple separate and distinct construction activities are occurring, or will occur, under one plan. The term "plan" in "larger common plan of development or sale" is broadly defined as any announcement or piece of documentation (including a sign, public notice or hearing, marketing plan, advertisement, drawing, permit application, State Environmental Quality Review Act (SEQRA) environmental assessment form or other documents, zoning request, computer design, etc.) or physical demarcation (including boundary signs, lot stakes, surveyor markings, etc.) indicating that construction activities may occur on a specific plot. For discrete construction projects that are located within a larger common plan of development or sale that are at least 1/4 mile apart, each project can be treated as a separate plan of development or sale provided any interconnecting road, pipeline or utility project that is part of the same "common plan" is not concurrently being disturbed. Minimize — means reduce and/or eliminate to the extent achievable using control measures (including best management practices) that are technologically available and economically practicable and achievable in light of best industry practices. Municipal Separate Storm Sewer (MS4) - a conveyance or system of conveyances (including roads with drainage systems, municipal streets, catch basins, curbs, gutters, 38 ditches, man-made channels, or storm drains): (i) Owned or operated by a State, city, town, borough, county, parish, district, association, or other public body (created by or pursuant to State law) having jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes, including special districts under State law such as a sewer district, flood control district or drainage district, or similar entity, or an Indian tribe or an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the CWA that discharges to surface waters of the State.- (ii) tate;(ii) Designed or used for collecting or conveying stormwater; (iii) Which is not a combined sewer, and (iv) Which is not part of a Publicly Owned Treatment Works (POTW) as defined at 40 CFR 122.2. National Pollutant Discharge Elimination System (NPDES) - means the national system for the issuance of wastewater and stormwater permits under the Federal Water Pollution Control Act (Clean Water Act). New Development— means any land disturbance that does meet the definition of Redevelopment Activity included in this appendix. NOI Acknowledgment Letter - means the letter that the Department sends to an owner or operator to acknowledge the Department's receipt and acceptance of a complete Notice of Intent. This letter documents the owner's or operator's authorization to discharge in accordance with the general permit for stormwater discharges from construction activity. Owner or Operator - means the person, persons or legal entity which owns or leases the property on which the construction activity is occurring; and/or an entity that has operational control over the construction plans and specifications, including the ability to make modifications to the plans and specifications. Performance Criteria — means the design criteria listed under the "Required Elements" sections in Chapters 5, 6 and 10 of the technical standard, New York State Stormwater Management Design Manual, dated January 2015. It does not include the Sizing Criteria (i.e. WQv, RRv, Cpv, Qp and Qf ) in Part I.C.2. of the permit. Pollutant - means dredged spoil, filter backwash, solid waste, incinerator residue, sewage, garbage, sewage sludge, munitions, chemical wastes, biological materials, radioactive materials, heat, wrecked or discarded equipment, rock, sand and industrial, municipal, agricultural waste and ballast discharged into water; which may cause or might reasonably be expected to cause pollution of the waters of the state in contravention of the standards or guidance values adopted as provided in 6 NYCRR Parts 700 et seq . 39 Qualified Inspector - means a person that is knowledgeable in the principles and practices of erosion and sediment control, such as a licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, or other Department endorsed individual(s). It can also mean someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided that person has training in the principles and practices of erosion and sediment control. Training in the principles and practices of erosion and sediment control means that the individual working under the direct supervision of the licensed Professional Engineer or Registered Landscape Architect has received four (4) hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity. After receiving the initial training, the individual working under the direct supervision of the licensed Professional Engineer or Registered Landscape Architect shall receive four (4) hours of training every three (3) years. It can also mean a person that meets the Qualified Professional qualifications in addition to the Qualified Inspector qualifications. Note: Inspections of any post-construction stormwater management practices that include structural components, such as a dam for an impoundment, shall be performed by a licensed Professional Engineer. Qualified Professional - means a person that is knowledgeable in the principles and practices of stormwater management and treatment, such as a licensed Professional Engineer, Registered Landscape Architect or other Department endorsed individual(s). Individuals preparing SWPPPs that require the post-construction stormwater management practice component must have an understanding of the principles of hydrology, water quality management practice design, water quantity control design, and, in many cases, the principles of hydraulics. All components of the SWPPP that involve the practice of engineering, as defined by the NYS Education Law (see Article 145), shall be prepared by, or under the direct supervision of, a professional engineer licensed to practice in the State of New York.. Redevelopment Activity(ies) — means the disturbance and reconstruction of existing impervious area, including impervious areas that were removed from a project site within five (5) years of preliminary project plan submission to the local government (i.e. site plan, subdivision, etc.). Regulated, Traditional Land Use Control MS4 - means a city, town or village with land use control authority that is required to gain coverage under New York State DEC's SPDES General Permit For Stormwater Discharges from Municipal Separate Stormwater Sewer Systems (MS4s). 40 Routine Maintenance Activity - means construction activity that is performed to maintain the original line and grade, hydraulic capacity, or original purpose of a facility, including, but not limited to- - Re-grading of gravel roads or parking lots, - Stream bank restoration projects (does not include the placement of spoil material), - Cleaning and shaping of existing roadside ditches and culverts that maintains the approximate original line and grade, and hydraulic capacity of the ditch, - Cleaning and shaping of existing roadside ditches that does not maintain the approximate original grade, hydraulic capacity and purpose of the ditch if the changes to the line and grade, hydraulic capacity or purpose of the ditch are installed to improve water quality and quantity controls (e.g. installing grass lined ditch), - Placement of aggregate shoulder backing that makes the transition between the road shoulder and the ditch or embankment, - Full depth milling and filling of existing asphalt pavements, replacement of concrete pavement slabs, and similar work that does not expose soil or disturb the bottom six (6) inches of subbase material, - Long-term use of equipment storage areas at or near highway maintenance facilities, - Removal of sediment from the edge of the highway to restore a previously existing sheet-flow drainage connection from the highway surface to the highway ditch or embankment, - Existing use of Canal Corp owned upland disposal sites for the canal, and - Replacement of curbs, gutters, sidewalks and guide rail posts. Site limitations — means site conditions that prevent the use of an infiltration technique and or infiltration of the total WQv. Typical site limitations include: seasonal high groundwater, shallow depth to bedrock, and soils with an infiltration rate less than 0.5 inches/hour. The existence of site limitations shall be confirmed and documented using actual field testing (i.e. test pits, soil borings, and infiltration test) or using information from the most current United States Department of Agriculture (USDA) Soil Survey for the County where the project is located. Sizing Criteria — means the criteria included in Part I.C.2 of the permit that are used to size post-construction stormwater management control practices. The criteria include; Water Quality Volume (WQv), Runoff Reduction Volume (RRv), Channel Protection Volume (Cpv), Overbank Flood (Qp), and Extreme Flood (Qf). State Pollutant Discharge Elimination System (SPDES) - means the system established pursuant to Article 17 of the ECL and 6 NYCRR Part 750 for issuance of permits authorizing discharges to the waters of the state. Steep Slope — means land area with a Soil Slope Phase that is identified as an E or F, or 41 the map unit name is inclusive of 25% or greater slope, on the United States Department of Agriculture ("USDA") Soil Survey for the County where the disturbance will occur. Surface Waters of the State - shall be construed to include lakes, bays, sounds, ponds, impounding reservoirs, springs, rivers, streams, creeks, estuaries, marshes, inlets, canals, the Atlantic ocean within the territorial seas of the state of New York and all other bodies of surface water, natural or artificial, inland or coastal, fresh or salt, public or private (except those private waters that do not combine or effect a junction with natural surface waters), which are wholly or partially within or bordering the state or within its jurisdiction. Waters of the state are further defined in 6 NYCRR Parts 800 to 941. Temporarily Ceased — means that an existing disturbed area will not be disturbed again within 14 calendar days of the previous soil disturbance. Temporary Stabilization - means that exposed soil has been covered with material(s) as set forth in the technical standard, New York Standards and Specifications for Erosion and Sediment Control, to prevent the exposed soil from eroding. The materials can include, but are not limited to, mulch, seed and mulch, and erosion control mats (e.g. jute twisted yarn, excelsior wood fiber mats). Total Maximum Daily Loads (TMDLs) - A TMDL is the sum of the allowable loads of a single pollutant from all contributing point and nonpoint sources. It is a calculation of the maximum amount of a pollutant that a waterbody can receive on a daily basis and still meet water quality standards, and an allocation of that amount to the pollutant's sources. A TMDL stipulates wasteload allocations (WLAs) for point source discharges, load allocations (LAs) for nonpoint sources, and a margin of safety (MOS). Trained Contractor - means an employee from the contracting (construction) company, identified in Part III.A.6., that has received four (4) hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity. After receiving the initial training, the trained contractor shall receive four (4) hours of training every three (3) years. It can also mean an employee from the contracting (construction) company, identified in Part I I I.A.6., that meets the qualified inspector qualifications (e.g. licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, or someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided they have received four (4) hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity). The trained contractor is responsible for the day to day implementation of the SWPPP. Uniform Procedures Act (UPA) Permit - means a permit required under 6 NYCRR Part 42 621 of the Environmental Conservation Law (ECL), Article 70. Water Quality Standard - means such measures of purity or quality for any waters in relation to their reasonable and necessary use as promulgated in 6 NYCRR Part 700 et seq. 43 APPENDIX B Required SWPPP Components by Project Type Table 1 CONSTRUCTION ACTIVITIES THAT REQUIRE THE PREPARATION OF A SWPPP THAT ONLY INCLUDES EROSION AND SEDIMENT CONTROLS The following construction activities that involve soil disturbances of one(1) or more acres of land, but less than five(5) acres: • Single family home not located in one of the watersheds listed in Appendix C or not directly discharging to one of the 303(d)segments listed in Appendix E • Single family residential subdivisions with 25% or less impervious cover at total site build-out and not located in one of the watersheds listed in Appendix C and not directly discharging to one of the 303(d)segments listed in Appendix E • Construction of a barn or other agricultural building, silo, stock yard or pen. The following construction activities that involve soil disturbances of one(1) or more acres of land: • Installation of underground, linear utilities; such as gas lines, fiber-optic cable, cable TV, electric, telephone, sewer mains, and water mains • Environmental enhancement projects, such as wetland mitigation projects, stormwater retrofits and stream restoration projects • Bike paths and trails • Sidewalk construction projects that are not part of a road/highway construction or reconstruction project • Slope stabilization projects • Slope flattening that changes the grade of the site, but does not significantly change the runoff characteristics • Spoil areas that will be covered with vegetation • Land clearing and grading for the purposes of creating vegetated open space(i.e. recreational parks, lawns, meadows, fields), excluding projects that alter hydrology from pre to post development conditions • Athletic fields (natural grass)that do not include the construction or reconstruction of impervious area and do not alter hydrology from pre to post development conditions • Demolition project where vegetation will be established and no redevelopment is planned • Overhead electric transmission line project that does not include the construction of permanent access roads or parking areas surfaced with impervious cover • Structural practices as identified in Table II in the "Agricultural Management Practices Catalog for Nonpoint Source Pollution in New York State", excluding projects that involve soil disturbances of less than five acres and construction activities that include the construction or reconstruction of impervious area The following construction activities that involve soil disturbances between five thousand (5000) square feet and one(1)acre of land: • All construction activities located in the watersheds identified in Appendix D that involve soil disturbances between five thousand (5,000)square feet and one (1) acre of land. 44 Table 2 CONSTRUCTION ACTIVITIES THAT REQUIRE THE PREPARATION OF A SWPPP THAT INCLUDES POST-CONSTRUCTION STORMWATER MANAGEMENT PRACTICES The following construction activities that involve soil disturbances of one(1) or more acres of land: • Single family home located in one of the watersheds listed in Appendix C or directly discharging to one of the 303(d)segments listed in Appendix E • Single family residential subdivisions located in one of the watersheds listed in Appendix C or directly discharging to one of the 303(d)segments listed in Appendix E • Single family residential subdivisions that involve soil disturbances of between one (1)and five(5) acres of land with greater than 25% impervious cover at total site build-out • Single family residential subdivisions that involve soil disturbances of five (5)or more acres of land, and single family residential subdivisions that involve soil disturbances of less than five(5) acres that are part of a larger common plan of development or sale that will ultimately disturb five or more acres of land • Multi-family residential developments; includes townhomes, condominiums, senior housing complexes, apartment complexes, and mobile home parks • Airports • Amusement parks • Campgrounds • Cemeteries that include the construction or reconstruction of impervious area (>5% of disturbed area)or alter the hydrology from pre to post development conditions • Commercial developments • Churches and other places of worship • Construction of a barn or other agricultural building(e.g. silo) and structural practices as identified in Table II in the"Agricultural Management Practices Catalog for Nonpoint Source Pollution in New York State" that include the construction or reconstruction of impervious area, excluding projects that involve soil disturbances of less than five acres. • Golf courses • Institutional, includes hospitals, prisons, schools and colleges • Industrial facilities, includes industrial parks • Landfills • Municipal facilities; includes highway garages, transfer stations, office buildings, POTW's and water treatment plants • Office complexes • Sports complexes • Racetracks, includes racetracks with earthen (dirt)surface • Road construction or reconstruction • Parking lot construction or reconstruction • Athletic fields (natural grass)that include the construction or reconstruction of impervious area (>5% of disturbed area)or alter the hydrology from pre to post development conditions • Athletic fields with artificial turf • Permanent access roads, parking areas, substations, compressor stations and well drilling pads, surfaced with impervious cover, and constructed as part of an over-head electric transmission line project , wind-power project, cell tower project, oil or gas well drilling project, sewer or water main project or other linear utility project • All other construction activities that include the construction or reconstruction of impervious area or alter the hydrology from pre to post development conditions, and are not listed in L_-Table 1 45 APPENDIX C Watersheds Where Enhanced Phosphorus Removal Standards Are Required Watersheds where owners or operators of construction activities identified in Table 2 of Appendix B must prepare a SWPPP that includes post-construction stormwater management practices designed in conformance with the Enhanced Phosphorus Removal Standards included in the technical standard, New York State Stormwater Management Design Manual ("Design Manual"). • Entire New York City Watershed located east of the Hudson River - Figure 1 • Onondaga Lake Watershed - Figure 2 • Greenwood Lake Watershed -Figure 3 • Oscawana Lake Watershed — Figure 4 • Kinderhook Lake Watershed — Figure 5 46 Figure 1 - New York City Watershed East of the Hudson EFKMAN EAST FISHKILLM � '" .-,� PAW LI!NG ATTERSON KENT SOUTHEAST PUT AM VALLE CARMEL 13 �1PSTEF2' N RTH SALEM SC ERS M COR A WISBOR RKT W EDFORD """--PO N�RIDG ,J/,,.. J N K CO tv TLE �. f RTH CAST M U LEASAN, HA SON EOH Watershed 47 Figure 2 - Onondaga Lake Watershed CLAY' CICERO Nik NO H usF 'WAN B U R EN SIN, ' 'u� LI " OL EAST SE � �" tG )DD4� AIVf t°.U,�NNN NNNNN"NSYRA U�t d ELBRI DG o„N DEWITT W A IELLLD S SKAN ATE S ONOJDAA ”,",", LmAFAYET l E :_ OTISCC TULLY [ ths h�usate sib ` "" "-" EBLE 48 Figure 3 - Greenwood Lake Watershed WARWICKi ( -------.................... ............... GREENWOOD LAKE Phosphorus Watershed 49 Figure 4 - Oscawana Lake Watershed .. ................ PHILIPSTO N j ( KENT IP'UTNAM VALLEY OSCAWANALAKE j CARMEL Phosphorus Watershed j 50 Figure 5: Kinds erhook Late Watershed SAND LAKE EAST GREENBUJ,SH �r r' NASSAU SGIhIICYCWACK o � NEW LEBANON , KVII'DEFV:II-OOK CHATHAM iCANAAN,6 VALATVIE � Town,'w°iil age,or City Boundary for New Ybu k State p 1 2 4 Lwliiiiles KindL4tmk Leake Watershed t 51 APPENDIX D Watersheds where owners or operators of construction activities that involve soil disturbances between five thousand (5000) square feet and one (1) acre of land must obtain coverage under this permit. Entire New York City Watershed that is located east of the Hudson River - See Figure 1 in Appendix C 52 APPENDIX E List of 303(d) segments impaired by pollutants related to construction activity(e.g. silt, sediment or nutrients). Owners or operators of single family home and single family residential subdivisions with 25% or less total impervious cover at total site build-out that involve soil disturbances of one or more acres of land, but less than 5 acres, and directly discharge to one of the listed segments below shall prepare a SWPPP that includes post-construction stormwater management practices designed in conformance with the New York State Stormwater Management Design Manual ("Design Manual"), dated January 2015. COUNTY WATERBODY COUNTY WATERBODY Albany Ann Lee(Shakers) Pond, Stump Pond Greene Sleepy Hollow Lake Albany Basic Creek Reservoir Herkimer Steele Creek tribs Allegheny Amity Lake, Saunders Pond Kings Hendrix Creek Bronx Van Cortlandt Lake Lewis Mill Creek/South Branch and tribs Broome Whitney Point Lake/Reservoir Livingston Conesus Lake Broome Fly Pond, Deer Lake Livingston Jaycox Creek and tribs Broome Minor Tribs to Lower Susquehanna Livingston Mill Creek and minor tribs (north) Livingston Bradner Creek and tribs Cattaraugus Allegheny River/Reservoir Livingston Christie Creek and tribs Cattaraugus Case Lake Monroe Lake Ontario Shoreline,Western Cattaraugus Linlyco/Club Pond Monroe Mill Creek/Blue Pond Outlet and tribs Cayuga Duck Lake Monroe Rochester Embayment-East Chautauqua Chautauqua Lake, North Monroe Rochester Embayment-West Chautauqua Chautauqua Lake, South Monroe Unnamed Trib to Honeoye Creek Chautauqua Bear Lake Monroe Genesee River, Lower, Main Stem Chautauqua Chadakoin River and tribs Monroe Genesee River, Middle, Main Stem Chautauqua Lower Cassadaga Lake Monroe Black Creek, Lower, and minor tribs Chautauqua Middle Cassadaga Lake Monroe Buck Pond Chautauqua Findley Lake Monroe Long Pond Clinton Great Chazy River, Lower, Main Stem Monroe Cranberry Pond Columbia Kinderhook Lake Monroe Mill Creek and tribs Columbia Robinson Pond Monroe Shipbuilders Creek and tribs Dutchess Hillside Lake Monroe Minor tribs to Irondequoit Bay Dutchess Wappinger Lakes Monroe Thomas Creek/White Brook and tribs Dutchess Fall Kill and tribs Nassau Glen Cove Creek, Lower, and tribs Erie Green Lake Nassau LI Tribs(fresh)to East Bay Erie Scajaquada Creek, Lower, and tribs Nassau East Meadow Brook, Upper, and tribs Erie Scajaquada Creek, Middle,and tribs Nassau Hempstead Bay Erie Scajaquada Creek, Upper, and tribs Nassau Hempstead Lake Erie Rush Creek and tribs Nassau Grant Park Pond Erie Ellicott Creek, Lower, and tribs Nassau Beaver Lake Erie Beeman Creek and tribs Nassau Camaans Pond Erie Murder Creek, Lower, and tribs Nassau Halls Pond Erie South Branch Smoke Cr, Lower, and Nassau LI Tidal Tribs to Hempstead Bay tribs Nassau Massapequa Creek and tribs Erie Little Sister Creek, Lower, and tribs Nassau Reynolds Channel,east Essex Lake George(primary county: Warren) Nassau Reynolds Channel,west Genesee Black Creek, Upper, and minor tribs Nassau Silver Lake, Lofts Pond Genesee Tonawanda Creek, Middle, Main Stem Nassau Woodmere Channel Genesee Oak Orchard Creek, Upper, and tribs Niagara Hyde Park Lake Genesee Bowen Brook and tribs Niagara Lake Ontario Shoreline,Western Genesee Bigelow Creek and tribs Niagara Bergholtz Creek and tribs Genesee Black Creek, Middle,and minor tribs Oneida Ballou, Nail Creeks Genesee LeRoy Reservoir Onondaga Ley Creek and tribs Greene Schoharie Reservoir Onondaga Onondaga Creek, Lower and tribs 53 APPENDIX E List of 303(d) segments impaired by pollutants related to construction activity, cont'd. COUNTY WATERBODY COUNTY WATERBODY Onondaga Onondaga Creek, Middle and tribs Suffolk Great South Bay,West Onondaga Onondaga Creek, Upp, and minor tribs Suffolk Mill and Seven Ponds Onondaga Harbor Brook, Lower, and tribs Suffolk Moriches Bay, East Onondaga Ninemile Creek, Lower, and tribs Suffolk Moriches Bay,West Onondaga Minor tribs to Onondaga Lake Suffolk Quantuck Bay Onondaga Onondaga Creek, Lower, and tribs Suffolk Shinnecock Bay(and Inlet) Ontario Honeoye Lake Sullivan Bodine, Montgomery Lakes Ontario Hemlock Lake Outlet and minor tribs Sullivan Davies Lake Ontario Great Brook and minor tribs Sullivan Pleasure Lake Orange Monhagen Brook and tribs Sullivan Swan Lake Orange Orange Lake Tompkins Cayuga Lake, Southern End Orleans Lake Ontario Shoreline,Western Tompkins Owasco Inlet, Upper, and tribs Oswego Pleasant Lake Ulster Ashokan Reservoir Oswego Lake Neatahwanta Ulster Esopus Creek, Upper,and minor Putnam Oscawana Lake tribs Putnam Palmer Lake Ulster Esopus Creek, Lower, Main Stem Putnam Lake Carmel Ulster Esopus Creek, Middle, and minor Queens Jamaica Bay, Eastern, and tribs(Queens) tribs Queens Bergen Basin Warren Lake George Queens Shellbank Basin Warren Tribs to L.George,Village of L Rensselaer Nassau Lake George Rensselaer Snyders Lake Warren Huddle/Finkle Brooks and tribs Richmond Grasmere,Arbutus and Wolfes Lakes Warren Indian Brook and tribs Rockland Congers Lake, Swartout Lake Warren Hague Brook and tribs Rockland Rockland Lake Washington Tribs to L.George, East Shr Lk Saratoga Ballston Lake George Saratoga Round Lake Washington Cossayuna Lake Saratoga Dwaas Kill and tribs Washington Wood Cr/Champlain Canal, minor Saratoga Tribs to Lake Lonely tribs Saratoga Lake Lonely Wayne Port Bay Schenectady Collins Lake Wayne Marbletown Creek and tribs Schenectady Duane Lake Westchester Lake Katonah Schenectady Mariaville Lake Westchester Lake Mohegan Schoharie Engleville Pond Westchester Lake Shenorock Schoharie Summit Lake Westchester Reservoir No.1 (Lake Isle) Schuyler Cayuta Lake Westchester Saw Mill River, Middle, and tribs St. Lawrence Fish Creek and minor tribs Westchester Silver Lake St. Lawrence Black Lake Outlet/Black Lake Westchester Teatown Lake Steuben Lake Salubria Westchester Truesdale Lake Steuben Smith Pond Westchester Wallace Pond Suffolk Millers Pond Westchester Peach Lake Suffolk Mattituck(Marratooka) Pond Westchester Mamaroneck River, Lower Suffolk Tidal tribs to West Moriches Bay Westchester Mamaroneck River, Upp, and tribs Suffolk Canaan Lake Westchester Sheldrake River and tribs Suffolk Lake Ronkonkoma Westchester Blind Brook, Lower Suffolk Beaverdam Creek and tribs Westchester Blind Brook, Upper, and tribs Suffolk Big/Little Fresh Ponds Westchester Lake Lincolndale Suffolk Fresh Pond Westchester Lake Meahaugh Suffolk Great South Bay, East Wyoming Java Lake Suffolk Great South Bay, Middle Wyoming Silver Lake Note: The list above identifies those waters from the final New York State "2014 Section 303(d) List of Impaired Waters Requiring a TMDL/Other Strategy", dated January 2015, that are impaired by silt, sediment or nutrients. 54 APPENDIX F LIST OF NYS DEC REGIONAL OFFICES Region COVERING THE DIVISION OF DIVISION OF WATER FOLLOWING ENVIRONMENTAL (DOW) COUNTIES: PERMITS (DEP) PERMIT ADMINISTRATORS WATER(SPDES) PROGRAM 1 NASSAU AND SUFFOLK 50 CIRCLE ROAD 50 CIRCLE ROAD STONY BROOK,NY 11790 STONY BROOK,NY 11790-3409 TEL.(631)444-0365 TEL.(631)444-0405 2 BRONX,KINGS,NEW YORK, 1 HUNTERS POINT PLAZA, 1 HUNTERS POINT PLAZA, QUEENS AND RICHMOND 47-40 21ST ST. 47-40 21ST ST. LONG ISLAND CITY,NY 11101-5407 LONG ISLAND CITY,NY 11101-5407 TEL.(718)482-4997 TEL.(718)482-4933 3 DUTCHESS,ORANGE,PUTNAM, 21 SOUTH PUTT CORNERS ROAD 100 HILLSIDE AVENUE,SUITE 1W ROCKLAND,SULLIVAN,ULSTER NEW PALTZ,NY 12561-1696 WHITE PLAINS,NY 10603 AND WESTCHESTER TEL.(845)256-3059 TEL.(914)428-2505 4 ALBANY,COLUMBIA, 1150 NORTH WESTCOTT ROAD 1130 NORTH WESTCOTT ROAD DELAWARE,GREENE, SCHENECTADY,NY 12306-2014 SCHENECTADY,NY 12306-2014 MONTGOMERY,OTSEGO, TEL.(518)357-2069 TEL.(518)357-2045 RENSSELAER,SCHENECTADY AND SCHOHARIE 5 CLINTON,ESSEX,FRANKLIN, 1115 STATE ROUTE 86, PO BOX 296 232 GOLF COURSE ROAD FULTON,HAMILTON, RAY BROOK,NY 12977-0296 WARRENSBURG,NY 12885-1172 SARATOGA,WARREN AND TEL.(518)897-1234 TEL.(518)623-1200 WASHINGTON 6 HERKIMER,JEFFERSON, STATE OFFICE BUILDING STATE OFFICE BUILDING LEWIS,ONEIDA AND 317 WASHINGTON STREET 207 GENESEE STREET ST. LAWRENCE WATERTOWN,NY 13601-3787 UTICA, NY 13501-2885 TEL.(315)785-2245 TEL. (315)793-2554 7 BROOME,CAYUGA, 615 ERIE BLVD.WEST 615 ERIE BLVD.WEST CHENANGO,CORTLAND, SYRACUSE,NY 13204-2400 SYRACUSE,NY 13204-2400 MADISON,ONONDAGA, TEL.(315)426-7438 TEL.(315)426-7500 OSWEGO,TIOGA AND TOMPKINS 8 CHEMUNG,GENESEE, 6274 EAST AVON-LIMA ROAD 6274 EAST AVON-LIMA RD. LIVINGSTON,MONROE, AVON,NY 14414-9519 AVON,NY 14414-9519 ONTARIO,ORLEANS, TEL.(585)226-2466 TEL.(585)226-2466 SCHUYLER,SENECA, STEUBEN,WAYNE AND YATES 9 ALLEGANY, 270 MICHIGAN AVENUE 270 MICHIGAN AVE. CATTARAUGUS, BUFFALO,NY 14203-2999 BUFFALO,NY 14203-2999 CHAUTAUQUA,ERIE, TEL.(716)851-7165 TEL.(716)851-7070 NIAGARA AND WYOMING 55 ■ Attachment B Approved Site Plans P.\29305.00 Heritage CAttachment B-Approved Site Plans ntchog�e�repmtsVSW PPPVSW PPP\5 WP PP M-12.doc THE APPROVED PLANS BY THE TOWN OF SOUTHOLD SHALL REPLACE THE PLAN WITHIN THIS SECTION PRIOR TO START OF CONSTRUCTION. P.\29305.00 Heritage CAttachment B-Approved Site Plans ntchog�e�repmtsVSW PPPVSW PPP\5 WP PP M-12.doc VA,hbARrRITL.,gI,IAPdA-1bAFT HSDHDq,amR,m,eT=mTm7elroroaror7zeses.oA_eA_A, W Z o aI > z 00 MIM 1901 44<-.,(DEED) Vlib 1eoG yi9'(ACTUAT) �38 2�ao E (D[ED) ., _ Engineering,Surveying& h _ dual) _ .....--—. �,, '—'—. _... ._ ri '. 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Gaw1u�Ea-ENrTNUITE11111 REIT B,oBiNc 2 AT 1— GFE=-055 N.T.S IIAT 11 urA d, vN� uMIFs SURFACE THEREFORE,GRWNowATER 5 ASSUEED To tlE AT 02 RElD1v EIEVAIION a. F Oen Rev smv NOTE zoavFs AIF v -0.95 T.AR v[wnvS TO RE PTG'xED TOwAH)S THE G0.D AND SHALL NE% 11 SLAVE A GA 3.MA%AIX+FS i0 RE V.3H UNIE45 AIHERWISE NATED. AR EARA LINED UP WITHq.GRADES TG ITCH AWAY FROM LUIiDIIRG FOUNOATONS July 10,2015 SDERUALNo° -O.v URLUE_wY A1'R-N CP S t}wTRAf,TAG RECVANSIDLF TO VRfvIDE VOSmvE DIwNAGE FLOW OVER THE HnE.pIGD rJ x T MAX , M GUTTY$ OS E CUTS AND PO 1 I E NOT PERMITTED V -0G FFE o00 Not Approved for Construction ON, s I Overall G �g . — , .. oFE--ns ARA,BASE TETA`Y.ENTF`I AD NO UNIT zy _ _ _— u GUTTERA 11 ES G ----------- SEus AUNITS 11 FOOT 1E111AL DEPTH Grading and = FBRAD A Eas MAY a AINIC ANAL ARCHITECTURAL AND DRVEwnr APRON®Ase v4 R Drainage Plan RonUwlDw AFGN GARAGE ANIT ITH Dr- Earthwork Notes BLOCK FRANC FRGN YR—AY ROLA®G A,R Typical Unit Grading Scheme Typical Driveway Grading Profile(w/sidewalk) BILID ETE PANETIAN L UGHT r0 OR HAULED AWAY FROM THE N.T.S N.T.S ;H RR,'HALL ADHERE TA TTE A.L RDAo°ELEa MINAE ENT FAR FEONUEN C-3.0 LOW AS 5 LY BY SANDGAND, HURAL FIUSEDI Tq IRNNERERGADD AAS ARRI VED BYLURE CC BEEN 6. 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E x 55.20 2 0 I FE s 5 33;0 The Heritage at i _9� i 5 6 x •z yin 5 � / Cutchogue 31- " _ 3w1 5 1xo 35 ° i '° �+'1 5 t6�mh Cutchogue,New York � s 0 ' J3 121, I{u o - - '� o� Town of Southold w 6 5 5 5 3 sa '� o� °^ �3263 - � v 1"0 ° - 1 23, pti 3 .eww5a5xPawwE.o ,x3,5°6 Q � d ,y .," a :rxx::xx.neww ywo,w1:.arewlw. ,eons11.1-TES1 a°r o .a5- 3.30 °``2" 50P5 I a.on to 20 a B0 33x r" a s> o3,60 UNIT 1�fi0 UNIT 111 UNIT 110 �- 3 UNIT 120 r UNIT 115 FFE k32.R5 FFE 5495 kTE= fly TxStO 0 r .3555 \ 5290 ",aw 3 0 31,21 CF 1221 GFE FE 11 31 70 GFE 54.40 f 42O GFE=3A M1O --- OrF y}5.00 I UNIT 119 O 60 1 L EL Y 15 j 95 5,30 31.30" \ R00 34ti0 '' FFE ry9 xw T EL ilioo m w, , N July 10 20 X L � pe ° (•) Not Approved for Construction r Z R-21 lc Grading and � ca1 a -----1-- __ Drainage Plan 0 3 32 C-3.2 3115 � E11 31n122 A5T1 ) q ao o ao ao w y SCALE IN Feel 7 23 ,� 29305.00 \\bb\nj\F.,qI A,d\GOON,AQ HG,GFgP G-6o-awg o O a z 001 ------- _---- % l \ Drainage Area A Drainage Area < Drainage A a-M vlib C -----i C t b ting RunoffC (FT)Il Volume C trb n g Rainfall Volume DrdL Ciannibutin LAP a(SIT) no Rainfall Volume l`rChYP 3} r. ` J -/ A RunoffC REQUIRED no red Ru ffC _ CSS CFS CCS CSF) CFS (CF) (SF) � CCS REQUIRED STORAGE ITUML REOGR os 0ry G s2s x 6 A21 Engineerng,Surveying PC �` r �'' F ROOF a x o x 2n2. n D x 1.9 x 20.12 G - ./I2 WD scapeArchitecture, 11-1N 241 x I x 20.12 21Dr x 1.0 x 2/12 D AREA 39 x R0 1/2 10000RONA,Pakway ^�p r - v35a x 9.s x 1v cuvEL ux x 0s /I2 126 �o == cR x 0 z/ D FL /I Sti to 135 2� uNIIAIRID/, D AREA D x ,.0 / 0 11 627 I.0 / R Hauppauge,NY 11788 D,ANnGE RESER 4546 urvD.c AREA IN 211 x G x G s _ a/ P ` R N SDEwnLx x 2/ AREA 0 x a / o / 631787.3400 r--�- N L.,,� 'N-------� GRASS H9r34 x x v 1 LANDSCAPED SS Ds AGE 11 z a Sc / 47 D56 Da /-. r K M It Q IDOCRID GE VOw 4E 10,664 CF U p 800 tF Q N95 CF w f _ 1 ds OWo oWDey i O / Se O D /VF _ SSE O _ / _ ' o STORAGE VO ME 1 D- 1 x 10 F EFFECTIF 9 IODINE CF/VF t 11096 OF AGE FLU LS 2 x 13 FT FEC PIN s 1D0.88 CF/VF f 2622.CF Sf 0 WEL S} 4 FT fFFE DEIN x DO ae_G/I t 4.211 Cf i rD Drainage Area. B Drainage Area-H f _ Drainage Area-N v-------L----1----------------L---------� a Contributing Rainfall Volume Contributing Rainfall Volume Contributing Rainfall Volume Area(SF) Runoff C (FT) (CF) Area(SF) Ruvoff C ( (CF) Area(SF) Runoff C (FT) (CF) Drainage Area Map REW NED STORAGE VQ UME CAI RmAR 1N REQQIREo STQRAGE VOLUME CALGAILITOG REQUIRED SUCLEGAGE VOLUME O,W LLRON ROOF AREA ., x 1.0 x 2/12 = 1. ROOF AREA D x 1.D 2/12 D A ISE AGFA 16 s66 x La x 2/12 m 2,121 PASEN ENT AREA 10,916 x 11 x 20.12 - 1,121 IAVEMENT AREA z IT x z/Iz - D IAVEMMT AREA z 1.D ANAVLL D z 0.1 x 2/12 = U GRAVEL x CS x 2/f2 = 259 GxnvCL 1bW x 0.5 DRAINAGE RESERVE AREA G 1-G 2/re = D smrwAuc AREA .I wA R AREA 2,n6 x 1.D x 20.12 = 4s I x 0 SDE L 3 slDewAu AREA ?sn z... 1 D x z/r - 229 DRAINAGE RESERVE AREA o x 1.0 x 2nz - D DRANAGE xESEevL AREA 0 LANDmAwE1/SIR AREA 4613a x 11 x 2/12 - 2301 uwusCA>ED/DRAss AREA a0255 x n.3 x 2n2 2.011 urv)sI'AREn/GiANs AREA B2,a68 x a1 x 2/1z 4.121 Drainage Calculation Summary REQUIRED STORAGE�L,Mf 4.a CF REQUIRED STORAGE VOLUME 4XI a RED STWIGE VOLUME 7.w2 Cr FE=W DED S W GE o DESIGN - -_ PROMO AGE VOLUME REGION - RGNpED VOLUME oE�GN LOCM Drainage Design Criteria ISE(4)12 FOOT I DICIALLIDS INIT 12 IT EFIE,TAL DE>N®Do a6 cF/VF usE(2)7 nD NDR LS wln 2 FT EV G DLFm N OD.ea IF/VF us(S)2 FAIT x DRYw s win 15 FT EFFE DEITH®DD 68 o/VF 1. STORAGE VOLUME BASED ON A 2 1 H RAINFALL. STORAGE GAIN DRYWEL 5 /T EFFECTIVE DEPTH OGes CE/VF S 4845 GG 5 0 OWME N DRELSE 2 i2 FT ES DF lH US e CF/VF S 2,421 of STINIAOE DL E DRY-LI 5 x 5 T EFFEC D LDx 10018 CF/VF 3"1566 Cf a. R N�FDRTGODOGDrainage Area C Drainage Area l Drainage Area-O 1 DE.A IN Or AGE`EASE Contributing Rainfall Volume CA,unbutivg Rainfall Volume Contab(n g RnnoffC Rainfall Volume AlINAGE TE j cGE A nTFAs os ( ) RuvoffC ( ) ( ) ( ) RuvoffC FT CF Area SF FT CF Area SF FT CF Area(SF)g ) ( ) ( ) ( ) ( ) I. ED TVGENLA"EFOR. aEOURED STORAGE IIIIE CALCULATORREDUIRE)STORAGE 10-GucULANDR REWIRED STCRAc M A ILATIGN IT PLITALLYFOR "GREFF 'REYEGUE F AREA 29,550 x IS znz m a,H6e R f AREA n x 11 x 2nx D rsooF AREA 4 x I. x znz AVLMLNT AREA 3e,1n3 x 0 x anz = 4snn PnvEMENr AREA 0 x I.0 x 2/12 - o PAVE4ENT AREA ,69,6 /Iz 3 s9 s .,UGENI TIEFOR FURNY' - IH RYwELLI ASE N A - 1 EASTTEM.Esu LT rvG FOM THE 1R 'E G'ALGULAT ONS FOUND Ury THIS UDEET GRAVE. % 0.5 z 2/12 = 0 GRAVEL 262A % 0.6 x 2n2 - 118 GRAVEL z w X 20.12 - 71 S DRANAGE RESERVE AAREAA 1,321 x 1.0 X 2/12 SDE"AREA 0 14244 x 11 x 1/2 1RANAGEFAREA a x... I.00 11ADARESREIWRALTHA'.AA ]Oe 2/2 - a LANDSCAPED/6Rss AReA 9.as6 x '/1296 uND.c e/ AREA 11211 . z216uND APEDs rx 13 x 2/ 166 EARA /2 / D VOMRVOLM YCLUME 4229 OF RRO OED 5 ORAGE VOLUME DESIGN IROIGED STORAGE-E SPAIN PROVIDED STORAGE UME DESIGN USE(6) FOOT 0 RYWELLS lH 1 FELT VE DEPTH aQ 1111 CF/YF E(5)iz FDOT n` S TR 0 Fi EFFECT E DF 0.88 IF/VF U (5)2 FGQT 0 ARYW IH 9 FT EFFEC EPTH®10068 IF/EP RAGE VCLU AE ) LLS 6 x t2 FT FF ECT E DF 0088 LF/VF-f 19,359 CF STDR M OLU NvwEUS}z D T- UE{TN.D0.H6 CF/VF=t jr.CE ST RIDGE N DRY S.9 FT FFFE DEPTH OU 68 LF/1' 4539 CIE Drainage Area-D Drainage Area-J Drainage Area-P Contributing Rainfall Vol C vtnbuting Rainfall Volume Covtvbunvg Rainfall Volume AR. (SF) RuvoffC (FT) (CF) A (SIG RuvoffC (FT) (CF) Area(SIT) RvnoffC (FT) (CF) REDURED STORAGE v0 ML GALaLAT IEOURED ITUGII0E mw4E QAIRUUTGN REQUIRED STORAGE v AI, AI ON ROOF'R A x LD 2/12 = 2RE, R F AREA 0 x 1.0 x 2n2 - RQOF AREA IAVEMENI AREA 21,w3 x 1.D x 2pa = ONES PAVEMLNI AIr<A x L0 x 2nz = u PAVEMENT AREA 0 x v1 x znz = 0 GRAVEL 0 5 2/12 = 0 fdUVEL 2114 z 0.5 z a✓12 251 GRAVEL % Oe z 2/12 D MorwAuc AREA ykVY x 0 x 2/,2 - 555 sprwAlx ARLw D z U.D x '1/12 = 0 sDevwx AaEA U,Hm x LD x 2n2 - sDO DRAINAGE RESERVE AREA 29, x 1 u x 2/12 - 4,999 RAINAG2 RESERVE AREA 1- 2/12 = LANDSCAPE)/AG-AREA re,114 x x z/12 '99e D G x G x 0 0s LANDSCAPED/DRAGS AREA 19519 x IS x 2/,2 = 4,929 LANOSCtsE/GRASS AREA 60,80 x U x 2n1 3,gy9 D ORALE.VOLUME 2]96 IF REQURE,510PAIE VOwME 10,102 C£ REQURED STORAGE VOUWE 3,129 CE FROVIOE GE VOLUME RESON PRO IN GE VOLUME DEC IN PROI AGE VOu ME)ESM U ()2 FOOT 0 DRYWE Tx,FT EFFE PTR®10086 GOT ITV-VOLUME N IRAN GE F� 1 ANLA D-4 34,000 Cf E(3)2 FOOT m D WEL S 13 FT EFFE1111 DEI ® BB CF/1 S VOLUME N)R S 2 4 FT EFF VE DEPT x D0.86 CF/VF-8024.CF GE VOLIME N NNYWILLI 3 x 11 ST EF EPIN x OD 11 CF/VF 11934 7 Drainage Area B Dra,age Area Q Area(SF)g RuvoffC R��11 v.luFm)e Drainage Area K CAt bsFvg RnnoffC R(Fv�l V(Cl�e Covtributlng Rainfall Volme REOU RED STORAGE vwuME CA n REQUIRED sralAc rA DunoN Area(SF) Runoff C (F-r) (CF) Roo R A x ,S - 391 2546, 2/12 - HOOF AREA 2/12 = REQUIRED STORAGE VOLUME ALCULAl10 PAVEMENT AREA x 1.0 z 2/12 - 0 PAVEMENT AREA z 1AREA 2529 z I9 2/12 = 421. M D x 2/12 - 3,441 ' AVEL 4o,O x Ox 209.v 2/12 = GRAVEL 1913 X 1, x 2/12 = 494 PAVEMENT AREA I z 1.D x 2/I2 = U D x 159 SIDE AREA ,,EUS X 1. L/12 = SIDEWALK AREA III, x 1 G x 2/12 = 211GRAVEL 2,285 z 1.5 x 2/12 = 190 1 D - U R LH AREA 2/I2 - DRANAGE RESERVE AREA 29,329 x 1.0 x 2/12 - n,888 DRAINAGE RESERVE AREA ) - 0 x x U x ,D x 2n2 - D LANDSCAPED/G TI,�}]0 L/12 3.569 LANDSCAPED/CRASS AREA TO"S x 0.3 x 2/tz -- .S A X 0.3 x = EwA1x A n x 10 x x/ n - 0.439 CF SID AREA 20 )STORAGE IrttWME RECTI IUD SIORA.GE VOLUME 1501)CF LANDSCAPED/CRAIG AREA 111. x 0.3 . - -. -- - Rx _2./12 PROVIpED S 0 E VOLUME--D-ESCN PROTRAGVOLUME DESON p E vuUSE(5) OIN)DriL S l.1 - --- ))EH N.O6606 GF/V SI .E VOLUME NAGE RESE VFAREA IS 66,-CF PLAIDED AGE VOLUME DES ON STORAGE OUf Mr LF/VF -3.019KU DATIELL, C SUSECAGE 6CF/PF ±2421 The Heritage at Drainage Area F vD ME z F- _ - Drainage Area R Contributing RuvoffC Rainfall Volum CovtrLbunng Rainfall V Juin Cutchogue Area(SF) (FT) (CF)e Dra 3 b Area L Area(SF) Ruvoff C (F.1.) (CF)e REOURE)STORAGEPAREA c t ibut g Rainfall volume Cutchogue,New York IF Moo E eA cuunDN 11 1 1/12 - Area(SIG Rnnoffc FT) (CF) REW weo S,a1ACE VDDGF AREAL IRARON &.6 x TV 2n2 = 2,9us Town of Southold PAVLMENr AREA n.ul x o x 2/,z - 02, REEL REp SIDRARD-TIE GA. ALL N PAVEMENT AREA x 1.) x n -.. , ro o x - u2 x Q5 x 212 - RQDF AREA 66.W ..D x ane - D tin moo. < r,RAVEL 9 ) x s,6s, GwAVEL 21,3 z/I2 - PAVEMENTAREA IN 11 n2 - H TOV,NRLU""A SIDEWALK AREA x 9,3aa slDewAuc AREA Towry a 2/12 - D DRAINAGE A 9 512 = U OR /I - RAI ARLA D II vR2 - a ) GE RFSENVE ARE 0 ° ur NacE RESERVE - N F rvR LINDSCA ED/GRASS AREA u.3 x 2/12 - sDEWALN AREA 1.0 x 2/12 = ° x A 0 4 3LH�3VH.ROW ,NA 3TATLM4rvT GIIEPI IVC a,96U x 24.9 9,012 % I,6n9 LANDSCAPED/GRASS AREA &5,352 % ]n2 a,268 1,310 CF N HE NVE AREA 53,825 x 1.) x 2/12 - A"I x 3 REWIRED STORAGE VOLUME - 1.523 CF r ED STOI+AGE VOLUME DRA AGr SF z Tts suamtssTON srznl�s avL STORAGE VOW E pESIM LANI AGED/GRASS AREA 29,966 x 0.3 x 2n] _ ]96 N - - PR __ PRONDE o (( RISINGS STORAGE vC,L wE 31,151 CFIF/SKE - - - o STo GE(LI! WELLS 2,7 T E VL DLPIH.0098 CF/RA 11412 RE PR DIED S o (P )IME DESIGN 5 AR VOLUME N D WELLS 5 1 FT 6 Cmm E)E QQGl AF/VF S 7,ss6 DF GE VOLUMEN DRAINAGE RESERVE.AREA L t 89.900.CF _ _ �..ea. w�.. July 10,2015 Drainage Area-S Contributing Rainfall volume Not Approved for Construction Area(SF) Runoff C (F-F) (CF) REQUIRED STORAGE VOLUME CAFCUAIIACU eta AREA PAVEMENT AREA 11,u1 z 1 o x 2/12 - 12„1s GRAVELx as sIDeWAuc AREA ;II 6a9 x L0 x 2nz T 3,�D1 a IDEA 10 x 2n2 - H, LA=/GRASS AREA ED 040 x x ant = SEEN r REQUIRED STORAGE v0u1ME - An,Cr o PRONG UME U ., ME N IIASAIE RESERVE AREA S INUr.CE o 8 23 29305.00 \\,hbLRUv j\LnnglsI-d\.AapS_o0 FSDHEq,CU I, d\IIDI t\z93GA QG-ITd.9 o O a z f /�• ` \ I U 190'1 4h' DEED) 'V' 1ib 908 89 (ACTUAL) _.. / - \ S38',50 5D'[(DEED) - sse 24 Lo F(ncruAt) -cr- Engineering,Surveying Landscape Architecture, �.. l00 Mt.,POLkway v Suite 135 V j S.510490 C 2✓56' F NSA oOA' 00"w Hauppauge, no. Hauppauge,NY 11788 \ /. S _ - 631787.3400 PRIVATEWELLSTY m � S, c III , IIr u ~' 2 nw 1 1 m•V•+ I • f .m + \ WELL SETBACK 04'40 E _ r \ n nnm� I, • 'mow ,-,, 1 ,�.az e S o -.... Fill 6 x - D ., PRIVATE WELL il M v� k / r / rr x � ....�\ryn .e v -30 E DEED) '-" D 53]'13 x � —� Nsr1 s'sD"w� 800.00' Ti , , n o BY �a3 J n n (. � � x n w` C �J - 2 v"L• ,(&'ar> � ham"" �„ s� ��.. _—_ �L INS n 0 �s unw. w n 10 B + ww n _"u w • "' a n inn °. U . A) „t • 0 „ EF N36'54 20"W .. ,, / \ / 2009,51'(DEEP) r / _— 2009,22 (ACTUAL) 1 I q PRATE WELL �•z 0 -----� P GA E WELL- � LF i � ETBAG � LF —— \ ETBA°ATE WE S Sanitary Calculation Summary Sanitary System"C" POP'l,tion DISsityE le tESt to (2)_2,000 IF 5 P DRE Iv DESIGN DENSITY2 C2R0G IF CONUO UNITS)n 22e GPD/UNIT=aso OECD AL—IE/GARE IAROSSLIND IIEA.2,003 see IS Hydro Action Units POPULATION DENSTI EQUIVALENT-50D GPD/PMES)IF,C75.2,1)3.582)OF-22,5403)GPD ACTION UNE IT s ARE APPRO°®'E TO FDA c (AFFIL—LE) ONE(1)HYDRnAGTIAN UNITS450 DPD EACH The Heritage at o4ernu Design sewage Density)Flo, $ani-y Leaching Pool Design C u tch o g u e PROYoseD s,RucruaE USE IRY UNIT BETWEEN'S'PRG UNIT DET-1 1600 2)Do SF GFCIAA=uSGc°oii11NIT IRR IDE 450 OPD /15 GIS/SF VE DEPTH 3 -son IF a SF V IRRINDEo.(1)1D FT DIAME>ER,,o EFF = 1.4 SF/FT A 1D VF=31 Cutchogue,New York w DESIGN DENSITY 52 GCONI IF CONDO UNITS)0 ees GID/,NIT-11,700 GPD Town of Southold Y 12(TSIC BE CONDO )TOTAL"C"ED GPD Sanitary System"D" Utility Notes 22,D GPD I II (ALLOWABLE) 1 GPD SCDHS Approval GGMMDNITY CENTER DENSITY WAP CALCULATED AT AN ADDITIONAL.,DS G,D DESIGN DENSITY 2(ITEDD EF GONDD UNITS)0150 GPD/UNIT-30D GL"D 1. ALL WATER AND SANITARY DESIGN SUBJECT TO APPROVAL BY SUFFOLK COUNTY DEPARTMENT OF HEALTH SERVICES AND WATER AUTHORITY AND H dro Action Units SHALL MEET ALL OF THE REQUIREMENTS OF THE SAME Hy d,,System"A" CAR IRIV 2. ALL DRAINAGE PIPE AS FOLLOWS UNLESS OTHERWISE NOTED: NE(I)HY D ACnDNN n �® b,FRED EIIH $ ROOF DRAINS HEADERS SHALL BE 10"CPP WITH A SLOPE OF 0.39 () -,00 IF,NTS' $ 'fa yL chi gPool D �f L Dea aLv avL RDOF LEADEII 6'G1''P DENSITY 4(,O1 IF CONDO UN TS)0 225 GPD/UN T 'OD GID 'END • DR CONNECTING PIPE SHALL BE,5"III WITH A SLOPE OF OQ / /� -I.OP 3- SANITARY PIPING TO DE MINIMUM 6"DR-,a PVC 012 CAST PON_ Hydro Ach Unit, OV DELA'ED:(t) FT DIAMETER ECnvE DE _ SF/FT 1 vF 210 IF July 10,2015 n. WATER PIPING SHALL BE ceoD BLUE BRUTE DR 18 PRESSURE awwc OR us Two(z) COIllInUlllty .enter 58111t8Cy System 'ROVED EQUAL WATER MAIN TO 113E B"WITH fi HYDRANT CONNECTIONS Sanitary Le 6 g P I D s g Not Approved for Construction D /TS GPD"IF - DESIGN DENS Tr. 3oD clD ppro .,. THERE SHALL BE A MINIMUM of 10 FEET of SEPARATION BETWEEN PIGS 1 (1)1D FT DAGOIAMETER.2D'EFFECTIVE DEPTH=11 GREETS.xD VF=628 SF NOTE SYSTEM To BE DESIGNED FOR IND GPD FLow _ WATER uNES AND SEWER/DRAINAGE LINES. Overall b. THERE SHALL HE A MINIMUM SEPARATION OF 20 FEET FROM SANITARY Sanitary System"p" Hydro Action Units LEUtility Plan ACHING POOLS TO ALL DRA'S AND DRYWELLS. O L E(1)HY USE 0 Ihin ACTION HYDRO ACTION LUNITEI ARE AUNITS M AVE'458 GPD EACH 7. THERE SHALL BEA MINIMUM SEPARATION L OF 10 FEET BETWEEN (3}TCDD 5'F UNITS SANITARY LINES AND WATER/DRAINAGE LINES. DESIGN DENSITY SaNtaryLeachingPoolDesig,l 3( 99 IF CONnO.Nis)®150 6P1NNT a5D GlU 8. ELECTRIC AND GAS SERVICES PENDING COORDINATION WITH IPAGESO AND � D / / 2 NATIONAL GRID- PRDVDED.(1)10 FT DAMETER FFECIVE DEPTH 314 SF/FT.T 1219 IF ARE APPROVED H dro Action Uni[s IISE ONE(iI)Hr SCDHS Notes $shay Leachirg Pool Design® RESUMED /1� PoFSFA — C—4.0 ON2 TGUAL CAPS,IT.. THELY NIR1 1121 W D PRDVDE O T DIAMETER. D EFFEGT�DEP 374=F;FT IF 13,4 IF RIPE'TY HAVE BEEN ILL G.IN FILE 1 UNI A'DRPCSES of DRA NAGE STRU2TD oDNDwPUT ATEC SEE CANNI L.1 FAR R ASSUMED TD BE FL ao o ao Iso OF,FF PC STUST 9 23 SCALE IN FEET RE B SED ON NAV),RBB SCDHS Reference#C10-06-0013 25305.00 \\,hb\nx"j\L.x9isi-d\.6aps-oo Hn,Ut alcr,ogxe\caa\a\e1--\z93cC Q-Td.9 u > 0Y 'V' 1ib OD I A r 1 ,z„ mU�x, AID 151 PCIATE \\ \ 6 ETa ___ nn ae 6 -- ..._ - .. ...... c o Inginecring Surveying& lDlirdscalre ., .lure,PC TEE, _.. 500 Mt.uite ,r Pei k y , A SETTLE Hauppauge,NY 11788 7 x. w t _ _ �_s2 631.787.3400 z _ \ LATE.D-11 L �. - �s at asTE \r > I'�Il/ I 111//' I8 a5 � �I 21°Y rC. 36 B D D f,tD 6D 50.55 p D 2 30 / q.� � 14 Water/Drainage Crossing Table D� ELF D � � D� \ t ��v v m 2A 6 °�� San Y ° 3g vamMH' IJ( I I ;� p ®,,\'- Grossing Drainage Ra-nary, Separation ° e e n0- 1 2 EELsn I I D 4"c�24 1 28.1 26.49 2499 24.24 1.50 Top Bottom x // 'vJ �6ao6 _- -v.ztt� 2 2911 27.61 2611 25.36 1.50 nx oD `:...�- _ \ 3 29.35 27.85 26.35 25.60 1.50 \ 4 27.79 26.29 2479 24.04 1.50 5 26.82 25.32 23.82 23.07 1.50 6 2541 23.91 2241 21.66 1.50 7 2792 2642 2492 24.,7 1.50 ®� 5 19 26.93 25.43 2393 2318 1.50 �ow �•... 19�_ I\I 3 S ""-. -c.5-_ CJJ r e•xN u ti)D i o \. 20 26.97 2547 23.97 23.22 1.50 t2 it v S iv m 28 21"' L� u.k 21 27.12 25.62 24.12 23.37 1.50 ' m 22 28.07 26.57 25.07 24.32 1.50 23 28.36 2686 25.36 24.61 1.50 >n,o CD' H-Dae qqq 22x, \ ,✓ 8 '3 '„ry ,,: _ � &nso � s o. -�l 1 za 28.79 2729 25.79 2504 Iso 25 28.17 2667 25.17 2442 1.50 \ V ! ® h D tr H \ \ o' is tDcn,co ao Eui - 3 \ 26 2931 27.81 2631 25.56 1.50 i m�CD 9 q �m �r �� n"�Eo�E�"E,D)Dt �� 0 ® nwt ti 7aoo �SE-4 EEF£cT CTrw '„ -A��. 27 28.27 26.T/ 2527 2452 1.50 D 1I7 e � ) Ll 11 Ll 12 1p \ m - �...... hti� aaoo � 86 IF 15... a 5 r - 11 LF ® r D n° royal g c„ ' SCDHS A � A v - -- : / 191tD°aAATE sWEs, •_ � '� . zwry - t6 CLUBHOU o o ilk � eo x , 1 0 � EII �r W �®A,DEIIE. DW' AN � � _ A v rvx" otDv x xxT - A..x5N ' �\ - otDv :,o oT sD.,6 mL11 3 mmo.-3vo ,..-, ... T� or // � S37 sDe(acTun(ACTUAL) __..-� \ i'..._._;! reTM aim =,.` -- o _ W LET LET NI \ \ / 2,u,- \! fr S'.1s^tF�' -_ / _ o t „ ry - Arz NHA AD 12 nw T 19 LF 15 0 107. _ 1ITD �� zly'- R� D r TEM C-1 6� w IAN,INI DD °y22D I 66 o a�o�mD 2 ' t 37+ z-12 � > D:;B D izzo =e e P°2�mD D ' T ' v I - i ' �• __ ^ _p�w ; w i The Heritage at / H -- -- - M Cutchogue D Cutchogue,New York Town of Southold w D • � ... u uNtSoT _ DD k8- ma s eErm ATE' \ �9wMN ew -sH�iv o -- - s a ,cD ,DR ",NDD,TATErEN-AE IT c. sA"." sA".niv® � 8 \:\ , I - 6= a, D 6D, ° °2;.62 2 ND 6t o .zA t� ° vL a � v N � L s July 10 2� my , N 2 ® --._.._.. _ _qT- ..o tr,s cav a.T �orL•s r � = _i - _ 9 r� qy J-- ------ . x a _ _ ��_ - t ' .. sysTem a 6 - � D _ z c+r ,� ze; - Vn sz 6T mrs o - H Utility Plan x LJ� D,D - 12- AN - ®25 - -- ®ti_ F g Not Approved for Construction z r� sTEu A ,w --_ - 6Tmem�,9 uo _� -En. -- - ea az _ - „Tr9M .a..s a" 9Do ti w 6 ee 73s \� / / v DATE w tt EETaA2H v �. x m26lEl- v I C-4.1 0 D 40 80 SCALE IN FEET 10 23 SCDHS Reference#C10-06-0013 2s3os.00 \\,hb\nj\Lo,9iaana\.°aps_oo HnritogP C lFI,Ague\caa\a\eia„sat\z93AE A—T_ew° o , z,so (A Junt'f --------------------- > LP D-1 001 — _ — u — - - _ v 11 IT 11” p p _ I A LATE.A ,5T _ L �` vlib Engscape Surveying& a Landscape Architecture,PC ssa T rz� rf ap t \y I N 100 Motor Parkway ur. sA 6. o �o yG- 0tll za \ nr ao s.pc zo I m ;z c�;3 Suite 135 v J �llo e e � EJ Hauppauge,NY 11788 ze ao zo x zo�� a..�x I p e zMx I / n, 631787.3400 ., ,a rr 1.0. ec v ° °4 f..Fe / 3�0p4' n000 11A I IIA osr � a r cr T _ yypmm�s „ -- CEEL, ,a ViH2 p ax �� ® — 1 A o � x 21 IT h I Ap ��,2 ��SLL .... 10 IT 18" A 6 wasp r w T1 �wr rr,AoA ATE q. ON / ao r \ IT N coNNECT „crn '> � ",.. � -s°/ �°-�x� oc zR / 'ur rw �`W, _' _ r® o sTE Ccoow rvnTE w B�cwn) o _ - - rzds - „ s — , o x ,ros \ °ate \\ s —o _ �IF�'t}�G. h ®p P s � F11 IT�l ere°°s°r wA, y H (5t9ry C Sp w ,0 VE AN FOR � r° s�sFEEEME°)n� eNpT 25 -ea $,r oaf p _. \ / <C'�Np_ H, ry9 1-16 _ 9 B I ae a l o.eo oe. ,3r - N eA L-11 - e ry 7 _ uv J4K� ... , Np , sysTEu r ow sau,a- -- .. U � �' z s. hx s uonou aT HIN =, m`O \ ssw s � t5 3 t ar RE P h 9 JN3713 3D W 4ES Er) 0 j -_,. - - � =�� _:✓ „ \\ � Water/Drainage Crossing Table r `A 1-21 grpiv Crossing Drainage. Sanitary .Water B onom Se ration ion roP Bonom ToPB.-In, Top >-vSTE 3 � 8 2949 21.99 2649 25]4 1.50 9 29,0 2760 26,0 2535 1.50 w N ,o 2959 2809 zsaa so� , i How \ /'- \ T6®° � � 1n•�zP "- \ 2659 „ 29.09 27.59 26.09 25.34 1.50 12 28.06 2656 25.06 2431 1.50 SAN IN' u 6c. 2e.75 I N. wv n eL.oc.i I uc. � -- TI I x 5150 Y..erIsi50 52p /i�0✓/2 � ��\d\ e a:nz o ,3 2717 25.67 24...,7 23,42 1...50 0Vs \ 14 27.07 2557 2407 2332 150 11 2g ty 15 2 3 2387 23:12 150 16 2625 2475 2325 22,50 150 � 17 2605 2455 2305 2230 150 28 2595 24.45 22.95 2220 1.50 s aca®i.0x h" - - .. hti --0azse, 28A 25F5 24.25 2275 22.00 1.50 w ry �h - h Heritage t The e ag a e _ °_ ay Aro , . Cutchogue e z9 ,azz ,672 ,5.22 ,447 ,.so ,� °°- -- --°per s=a _- - -- I { e , t °s°s° w\\ ♦ &"2c IS so-B Cutchogue,New York re e.s° reu ` H° Town of Southold 'm v I :16AnI. �� SA A" I �p � 11 Approval 11) 2e 30 ♦� e 1� Hs 00 T _ SAN T, 9 2F 0x ct° -a _ __ -_....- yr _. - K n - \� 2 Ti o, J 1 — k -- — \ ITM oNOT� �_ — -- — July 10,2815 HA 1 / Not Approved for Construction 3 0 LL T—K ---- -- / p 9:PATE WELL—ASK / -, TE WELL SETEAcK \ -- 7 \ / Utility Plan\ r ps 52(,EIT Au o \ 1 0 n � , E C-4.2 40 0 LEE 80v soImvATE LL sETeacK............ � a»--� \ � scnve IN 5ee7 11 23 / SCDHS Reference#C10-06-0013 2s3os.00 \,hGU,plG—qIN-\:-1bAD HSHRU P E-1 d.9 >_ O 001 z f �T ILI SNOTIRAL AND A, Es A T 11 ENGINEER 1301 44'�DEhU) \. 1 D0�Sp'(ACTUAL) S38 SU 50'E(DEED) ._ Vlib ., _ 'ssaz42o t (AcruAt) T Engineering,Surveying& : AT,. ---�.... d Landscape Architecture,PC /ad '.w^✓ "\/ w,"s.�.. \ 100 Motor Parkway A.. 1V... .. �.t Suite 135 .o, �I Hauppauge,NY 11788 iII N � ,1� Il"ry o PH 3 ,..• T. ).�' • �µ .�,u\`'""^*., •:S°' t V 3°Oq, no W 631.787.3400 rn °'�i*•�; ,��l. `,', 53/'0440 E 3 „� .�.. " T ,^ „a 1 ( 11 j` .. f °„ I/ _.r6i -5 ti.'f r,N "C, 'l ,F AN PHASE 1�S ` ��. AS �ssAR. ATE F s PHASED., V ,,, s., �� f1 7� r 1 F, so s oc ee ' E S37 oa 4o°E IF � ,xd� > GRIPPING STREET ,"" "1 `;q\ q,"p✓�,F/.y � �� (\' `m ��i,I++ " t. f \ - ✓`.,,,,. + A THREE Is IF ��' f :*,_...,......G<r. \ / ,7 µ may fpm. )) 1`r / ' L� .. ALL THREE � R / `" / PHASES �� .... . /,� n R TT- �, �� ,� y ? f ,f / r r ° Ill`2 , .. , ddPAY YN s671330E(DEED) T .1 ..:��1 ... ",f .., PHASE2 ....,�,� � ,,S3704 E(_cru AL) A2t4/ n� ,��^ I � , � w`�'� �.,,;•,T/;��/ � � 371330w o000 PHASE4 'GAGIDI AREA 1.1 UG , PHASE 3w PILL RT! , ✓✓ N oc _� LE TO sTpw N M ) P W ' /` DRAINAGE RESERVE AREA PROTECTION NOTE: - ,"o-.' III THE CQNTRACTDR IS REQUIRED TD INSTALL SILT FENCE AND PHASE 7z,„x N': .._ ;..;;?'C;„,a '� CONSTRUCTION FENCE AROUCD PROPOSED DRAINAGE RESERVE AREAS IN } > ... .� ... 1, � ��.� THESE AREAS. ORAE TD MINIMIZE DISTURBANCE TO AND COMPACTION IN CRDA o R M I N AT/ '�. ^r^.. / '�' 1m. I u� FINAL GRADING OF ORAS IS TO F3E COMPLETED IN ACCORDANCE WITH ,.. a II ,: Il h / I THE LANDSCAPING DETAILS AND SPECIFICATIONS. WERE MUST BE ��. � VIII �iPC °� cooRDINATED WITH PROJECT SITE ENGINEER rHRoucHouT ,(• ."� �� s ..� �: , �, ,, u� ( s.l cis' aCONSTRUCTION. y a� 1. PHASE 4 °. PHASE 3 :> PHASE 2 J�J y 2009.22'(ACTUAL) q G BO 0 80 16'0 O SCALE IN FEET V ErosionControl Notes LEGEND — - =R DRR ON TMAE ITC ITC GDNTIAGTDR SHA C�Aaq CONTROL MEASURES As s111E onl THEGEAL o Lo L PHASE 4 CONSTRUCTOR ENTRANCE VEGETATION TO REMAIN CHILL BE PROTECTED AND REMAIN UNDISTURBED e' OF All" CRASH' E , �• •®•.m. ® �\, n. nREA AND THE IT T AREAS�ANEII E Fos[o O CURB DROPGN0LET0 PFOTECTU1 RUNOFF=�A "�E DIVERTED wAr FrzoM°G °2E�;HDPE RE RN MEEDTO TO REDUCEHE CRE RUNOFF _tt tt_ G THE A - SILT FENCE �' -_--- = F. ��ED AN T CID ND MA'RALs EMR TALLADDN AND NANTERANGE'NEE"' /"' D SHA GDNrDRM T DELNEs rOR ERDSDN AND sESAIZ, h �.. ry u ( I )®Su I� COThe Heritage at PHASE soi S TO'S AREA r, �1 — THEFROMCutchogue I ["STOCKPILER AS AND ITCRINTH11 SEA HAL A s°NAT ON Cutchogae,New York ' w„ �� 1 II "��.�.�... seNA Town of Southold vNO o. r' �1 �� ! RT I E IE SURROUNDED BY SILT FENCE AND Pec o eR IIIIIIIIIIIIN- -� P THROUGH THE FIE OF IED A ENT 1ASSER,'EA.ENT TGA'�FFRI ANA,'A,ETI,:IIEIIIIEI ow•aERY•Eo RAN rEMo ART INLET PADTEITION ))) 1n,1 LeT NRr1Te oN T ^' A� e GLEN AINTE IINTFAIL MEASURES IS TO BE PERFORMED A ACTED Y1, ART NOT SEDIMENT PBSTECTIO,LEANING AND REPAIR OF IERMS AND DIMENSIONS,AND AFE-NA AND REPAIR OF INLET A 3 a—oPT�wBPary a„9„s AR, HA L BE USED TO CONTROL DUST DURING CONSTRUCTION I F'VU—'ANN N ART ® 'HI ANE LDDSE aED'I \ I,; a y �..� u \\�� o f DN ENTRANCE SHALL RE RANTANED DN L / r ��. E �..a.`.., 'U 1 ` eD July 10,2015 NV ° E e aN L UPLAND DSTORu F'T _.f, .. II TAR 1 AREA HALL RE ATH Not Approved for Construction 'LT FENCE TO'EP TH Erosion&Sediment ALL PRI-DONG AN FLA w, ENTIRE SITE/ ` _ PHASE 4® -� DNSTIIGTDNControl Plan INSTALLED INSIDE' MANDATORY INSPECTIDNS AND MANTANAL PERM w111 DDGUCP NTS DNUR STE FOR DURATION OF a Dandy Bag Notes 11 INSTALLATION X+u...X--M —H"✓ MCv y� � tt I I EIRTY DANDY BAG 1HOILL BE PLACED OVER THE GUATE Al THE GRATE STANDS ON END vi a��srv.mee \ F i_R. ATTACH ASSIGNMENT TO LETTERIT.'IN _ TRE IRISH OF ) LACE THE GRATE TO ITS FR E TNG NT . A� OP C 5 TEP DNT DE�GE DDG n r z, DRENT AND DEBRIS r111 THE s1HrAGE AND GNTY IF THE UNIT — — . _ _ —w_ _ _.. — — — - AFTEIEALL'A P.11E'EN,sE zz. R DRE THE SEDIMENT FLAT HAS ACCUMULATED—a THE CONTANMENT AREA OF THE DANDY RAC �� A,NEEDED 12 23 IF USING OPTIONAL DL ABSORBENTS,REMOVE AND LA ABSORBENT PILLOW NEAR sAT1AATGN Typical Erosion&Sediment Control Layout SCALE 1"-10 29305.00 \\,hb\l\LDngI I-aIFFIps_oo IHHOq,CH IT \la\Plant\293FA D—LT.9 o O a z n4. >" ten FA M r A PI HFI N FoABaC T= B AN.1. 'A LIBLED SAID HE 1IIE1 MAI I RAL w �° of w)s _ VALID TOP F°NIT..NcHAN UNI:... a e wm C'� = PFR PLAN uAa ` cuss reo CENTER RAIL cHaN LNU FAIRI Bim. o®®® RE UPEIT OW u~II z Au MESH ESIL A AIR 1111 I-A T a®® 53 - MENT s/,T; 2.g ®®® ® g� Engineering,Surveying& TH %�' y a t U ;,�• ,w Nc aR ./ocK RE® RE _ .UK 100 NORDIC,APS�kwRY <ture,PC INNS NET �� 11 �" TENsoN wlaE - ®®®®®® // / PACTED ASPHALT SURFACE COURSE �. 'U. 6 T Suite 135 (,111_,NH j a"MIN.COMPACTED ASPHALT LEVEUNc oCUN'E Elevadov a d'°A m BE®® Hauppauge,NY 11788 I.RE RE RE RE FRICTION NO UP ooueTes NEr o ° - ) CTE n 631787.3400 A, i BE BE [n2 eErveER % Po o TOP HAIL PM .-FLn / b/[vsOCHBo= ® ® - / O 6'"MIN.OOMNACTED RASE COURSE cENeEw ( .(TY>.) u(NSH K =N B'°®E® g, - A AA O ° TO C FENCE FABRIC oFaN °� i, IT STO,106ALTHIGH�CiOUNDIATE�� Do .( - suE �,y r; / ✓ WINER END III )I BDNaxETE FoorNI dl-)I N BE�yur° _- D All co AueD suBc�+DE rNE COSTS BEVEL— —CENTERI L a�° �� ED o AN .KXI x ///. MH T Maz.'I NE) a '� a m^ET N wuNs / reeze/Thaxr Chmah \ WIFE )''CIA SEAMLESS STEEL PIPE SWI VEL JI II .Bo g W III II FA°LL / J/ Asphalt 6echou Por F D. R An \I HL RA N�) T SD P - TYPE S GRADE DNNECHDN DP OF RNGS POIT / DDRTr FEAnRE� RTM All, D AND notes La. SB ,A ITRON4 WE CHT(O.D. BW'pEI5 NeTAutu Pex us TeNNs CONCRETE FACTINc 11 A/// (..000 PSI TY E[) U a DIA. Curb Iule[ CISH DF THEPREcnsr smucHo(E Deu wrH s ANUFACHORER LNC,sHaTL SE io nw. osu eEMPERAroRE ANu ALL uE ueS ONEu Hs zo Loau N,. ILE11111YASYEs wDE OF L O W 0 Ers es sHDP DRAWINGS AND R PREcnsr srreucrI SHALL N Nl`HM RnF carIN THAT THE sT us(Es IDE /i%/% ///�//��i ✓ / ODAT LD D DE 0D6HDN ED D Ex NSTIHITDN. oR E D Posis Note. DEscNED TD wTHSTAND SAD LonD Nc ALL IEEIAIT ITSHITHIME1 SHALL IE .- -, Section STD' E T EXPOSED SURFACES 3 MAI IEARANCE TO O111DE OF THEM MIATAR ALL P 1_MATERIALS TO BE Al POLAR AND D PANT EPDXYPAINT ENAMEL YELLOW. /(/,///�� 0 N cONFo tM ANCE WITH a. PRov Sorts ARE tSEeR CH couR�Es gMZAx.�ATMsnEENcrH coNc tErEPE �M /�� INSTITUTE PRODUCT MAUSENUAL L. oOKIfE"M S1EH"'PADLOCK WITH 6N F1 LLOF WORKING KEYS FKAYE IN ND MORTM( CK CDURSE 5,3,000 PSI CONCRETE FOOTING b RAISE MA RA TO BE USED AS COLLAR MATERIAL RMN SITTARLE RY THE EIGIIEEI. 78'Asphalt Tennis Court ,/, 6'to 12'Chain Link Fence D/De Emergency Gate(Double) 2/. Precast Storm Water Drainage Drywell(DW) ,/HL NT B_ .,Duren IHNBI NTB_ 1Durca VHS LA- S NTS_ Iour ce.v11D REI U)-ge6 NTS_ .Source IHS UJ_ L RAW T // \ AND -__ Au FF MIN. ONE TO o � HD nEE= A PROVIDE '? Half Plau-Dome lop vAaY CM'BELLEOH Br RU SEE EQUAL ME �, ILL- Sax u,umA OLFFgzrrvcncsic OARI.ENr oN SITE UPIT'OLE DE C'I FRAME WITH N /orz SE FRUIT 111D 11 1 AT A GRA O �e NR i 'OLEU FG HED BY QN N LIGHT OLE[YELLOW D A SE DED SET 5 ABOVE GKADE. 0 C rCH acsry reeHc i0 Rf E 0 O r J LOT BE PANTED s - ®Tc a rh Rim Detail �� ->z Q.^ � � - LD WALL DOME. s NUFABruIES III 6 sp-$f 1F f o - 0'ST U TU'L ENGINEERS w ORca 'TT TD xc a WACTED OR G GS PC CURB INLET DETAIL (Y 8'n,° -oU z Io PE TO RE > 18" INCH GRADE(MATERIALS VARY) $8 III _ INSTALLED AS PER PLAN s T VF D, 5 UNA4E INVENT Aw _. •� �� x ° VOLUME III- 3 DE SAND&GRAVEL COLLAR N cwu DO 6B CF/VF °° - ALL AROUND.(SEE NOTE 6) _ 1111 MAY ME IREI TV T - m T. ALL PRECAST'N C R S 5 RO D WITH- BACKFILL UNDER AND AROUND SUFFCENT STEL NFORCEME 0 TURF AND ra cx iasx Ja. IF o^° WELL W R xMum oFT2 xcn� w ETE CEMENT °n� ( c)o III DRY ESS SHR NKAGE AND SHALL BE DES GNED FOR HS LO LOAD NG. GaDUNU i0U II 8 MATER AL CO C a _ THA %F _ _ e CO NEST TO SIDE ET L OLE �m N]B D,S AND 2 ALL SHOP DRAWINGS A u ND DRILL \ SEE ILEDI CAL PLAN FOIi SCE o, ° 4no .TION STRUCTURES SHALL NCLUDE MA HER h so iw n II�.o n'a IIF CLAY(5 LT I' C H - D Cl. o'a J o• NOT TO IXC ) (E TIFIG TION TO T THE STRUCT ES ARE DESIGNED TO IT.—LERSAIlRY"T AT' WITHSTAND SAIDRL III = wHETtIARED EN unlsN ST EE)soL MANUFACTURED WITH SLAB DETAIL TRN ED Tura"( > Dveexn Ns azoaa NAse IF 9J✓ ..e °. 3_ C`T S UC U SHA B roue eeuuNc r Y i< n+ II Ro CONDmONS ARE ENco1NTERED. 000 P7/28 511'E G1H CONCRETE M m HIS ELEv.X2.0 p0 A III A �L_/HN VIEW CD OR x & O TI D ', o - CLE R GE TO U TIDE OF I''ITE 0'T K LL I'IPE IDDIS UNIIST IEI (N) PR II ° JO [D c eEnx Nc rorva+EeE sue SUBGRADE � uDTe Tx rkH�avo Ell MFG SPECS ¢'ffi 'Dues HER .QG 0 NDWATERFRAME uxmxrwwT rvx sou auo Txnr-Tc wroxc R+ 5_ F E D CR E SH LL DE SET F LL 0 TAR DED, ♦ au rvc uare �H D BRICK AND MORTAR 2 w Rechou Pl.. _ �b'�q°R yo- - IF C C I _ MINIMUM cENETRALON INTO BRICK COURSE, COURSE MAX) - ... .. Notes: - IRI-I uHl IHu I uHl IRGI STRATA OF PERMEABLE STANDARD PRECAST CONCRETE ECATcH BASIN R o A D _ -- " SAND AND GRAVEL 6_ NAIVE MATER O B USED AS COLLAR MATERIAL IF (4'x4'-TY=CAL) (5 FEET TO 20 DEATH) __'J"� - I.LIGHT POLE FOUNDATION DESIGN s SUBJECT To CHANGE BASED IN FINAL POLE AND FxrulE RETE eM NED T BE SUITABLE BY THE ENGINEER. F UND ALTER sELEC'ON AND GETECHN sH DN. coNTxncrox SHALL""RE NE SSA` >xoTEcroN Fox ("sroNE eoo.. ra. 2.ALL REBAR AND FOIINI TIO DI ESI)NS T)UE DESIGNED BY STRUCTURAL ENGINEER OR PEI T- sLH FErvc Nc/ aTe"( J ��a �E AD AGENT PROPERTIES AND UHIUTIE5 DURING EECIT ATI ON IAPRECAST iFALL POLE BASES REQUIRE CERTIFICATION FROM THEMANUFACTURER OR SUPPLIER OF DIFFUSION WELLS. OASES ARE DE5 FOR E WIND TO AND STRUCTURAL REQUIREMENTS OF THIS Half Profile/Hal[Sectiou IvED SITE AND uonnNc F�*Tu'Es.HH CROSc, SECTION Light Pole Foundation Detail E/11 Precast Diffusion Well-12-foot Dia.(DW) 9/DN Standard Precast Concrete Catch Basin Temporary Construction Entrance NTS_ Sour-_SHR I'll LD-311 NTS_ Suur cs.SHIP REI DII—L NTS_ Saurcn.Tuwn oI Ia Ft 111 5.-AT NTS soar-Town ofs N.III sw-05 DANDY BAG' - T� SA D RA"UR Vy DRIP LINE MINIMUM NATE wEeBHT _ GRATESTORM LE cTH BF 2 - SEPO mw 4 GRAVE TIEE TRUNK � �. The Heritage at 0000 vECGao \TDNE - L, f . C t h OF.OSORE °/o *�) , F U C ogue FILTERLLBTH a°=a'S=AGER ) WIRE HEST _ LIFT sTRnPs s J-A CHOSEN Fors STOCKPILING o F Cutchogue,New York usav sola 1 0 SHALLABLE. F Town of Southold EIASY PeP1 D -ti SLOPE OF sTOCKLILE SHALL BE PERSPECTIVE VIEW _ AN IFV / DF 2HInuM SPALM6 2 21 AND "SP E a INS AN:'1'ION Plau 3 u C ncr.n OF UNIT OF SOL UITED LNG RR"MINIMUM 2x2 s HSAN 1Enzoxs v3TTe avL E HE ILE SHALL BE SUTJEOUNUEU WITH E FENCE POST ANIHI�- ST IIUYED TO EGETATI ONA A COVERED a RS � DANDY RAG'® SHR WOVEN WIRE FENCE STORM- ( 4 SILT FENCE DETAIL ON THIS SHEET e uvesm awsnNO vuN uIs SVF SEWER SHUNE DIST a 0 zx6' ORANGE PLASTIC GRATE ti MAX o,Q POS'T(TWJ WEB FENCE(TW.) (6x6-101(0 WWF) FILTER CLOTH -._.. F N o . Dea 11.1 NOTEI LoamT SVF 4, op EPAceu q WEIR EMBED FILTER CLOTH 0 ea July 10,2015 ° MESH -I Z sTABI REE ENT aE CLE MIN_6"INTO GROUND WI1H VEGETATION OR COVER 2 DUCTION SPECIFICATIONS `.. 2 TOR E P, F CONSTf O roE <" LLS' aF SLOPE Not Approved for Construction ATIINI I FILTER FABRIC SHALL HAVE AN EOS OF 40-05 1--- NOTE. CANDC -.( N0E) p AME SHALL BE 11NSTRUCT11 IF L S IICTEDN MAXIMUM DRAINAGE AREA 0 1 H FUD - ° •, ." "" 112 ACRE 1100 LINEAR FEETSite Details 11 R a a R S CR SS R SHALL llE A CDN P C 30 INCH EWIDTHIX ISK IT SHALL BE ECU 4 DNG R HE oaH, _ "V� SECTION DETAIL Elevatlou IIAEOU ALLY s S GED TIES(TW_) cr _ Gj GibIR sTu D ossa LY NARED T epIN MDIE THAN r,°FE V� SILT FENCE DETAILS Mx= 'o e 9 S C S C D ASSEMBLY SHALL 11 PLACED AGAINST THE INLET AND SECURDEF a - <Na .ri A n,.nr o crcx sc n x a'ANCHDRS 2 FEET LDNG ExTENDENG ACRDSS THE TDP THE /opy TM"s°mc WLET ANTI HELTI M PLACE HY SANORACS UI ALTERNATE wE6HTS WQ ILI WBALES CA-`- k """� R'\ Notes: 5 SILTFENCE MNoto. MAx[MUM DRAINAGE AREA l ACRE T.NSTALLTREE caOTECTON FENCE AT THE CO DRIP UNE OF EXISTING TREES TO FEMAINANVEN . IT«I� O IF ��BP DDS Curb Drop Inlet Protection Tree Protection Fence D/De Soil Stock ihn Silt Fence DN IAII.OH INi.EI SEDIMENT CONTROL LOANS: P g NTS_ NTS_ ISS-.VHH LD-110 NTS sourca NTS :ourcv.TAof SoutF,oltl Sw-OT 29305.00 ■ Attachment C Soils Map P.\29305.00 Heritage Cot hogueVepoil'\SWPPP\SWPPP\SWP C-1 Attachment C— Soils Map PP M-12.doe Soil Map—Suffolk County, New York it w w 710300 710400 710500 710600 710700 7108W 710900 711000 711100 711200 711300 410 1'2'N S 410 1'2"N M d� 8 n M V S M g .o M g �M} N `Q V M V 3 g M l V l 8 / � S N M V S M � S M 8 V O M 410 0'39"N iii `' 410 0'39"N v 710300 710400 710500 710600 710700 710800 710900 711000 711100 711200 711300 711400 io o Map Scale:1:5,060 if printed on A landscape(11"x 8.5")sheet. N Meters R nN 0 50 100 200 300 /V 0 200 400 800 1200 Map projection:Web Mercator Comer coordinates:WGS84 Edge tics:UTM Zone 18N WGS84 USDA Natural Resources Web Soil Survey 9/21/2016 Conservation Service National Cooperative Soil Survey Page 1 of 3 Soil Map—Suffolk County, New York MAPLEGEND MAP INFORMATION Area of Interest(A01) �;p Spoil Area The soil surveys that comprise your A01 were mapped at 1:20,000. Area of Interest(AOI) Stony Spot Warning: Soil Map may not be valid at this scale. Soils Soil Map Unit Polygons Very Stony Spot Enlargement of maps beyond the scale of mapping can cause Wet Spot misunderstanding of the detail of mapping and accuracy of soil line Lbw Soil Map Unit Lines placement.The maps do not show the small areas of contrasting Soil Map Unit Points Other soils that could have been shown at a more detailed scale. Special Line Features Special Point Features Please rely on the bar scale on each map sheet for map (121) Blowout Water Features measurements. Streams and Canals Borrow Pit Source of Map: Natural Resources Conservation Service Clay Spot Transportation Web Soil Survey URL http://websoilsurvey.nrcs.usda.gov Rails Coordinate System: Web Mercator(EPSG:3857) Closed Depression Interstate Highways Maps from the Web Soil Survey are based on the Web Mercator Gravel Pit projection,which preserves direction and shape but distorts Gravelly Spot US Routes distance and area.A projection that preserves area,such as the Major Roads Albers equal-area conic projection,should be used if more accurate Landfill Local Roads calculations of distance or area are required. io Lava Flow Background This product is generated from the USDA-NRCS certified data as of Marsh or swamp IN Aerial Photography the version date(s)listed below. Mine or Quarry Soil Survey Area: Suffolk County, New York Survey Area Data: Version 13, Sep 24,2015 Miscellaneous Water Soil map units are labeled(as space allows)for map scales 1:50,000 Perennial Water or larger. Rock Outcrop Date(s)aerial images were photographed: Mar 28,2011—May Saline Spot 12,2011 Sandy Spot The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background Severely Eroded Spot imagery displayed on these maps.As a result,some minor shifting of map unit boundaries may be evident. 0 Sinkhole 44p, Slide or Slip 0 g,f Sodic Spot USDA Natural Resources Web Soil Survey 9/21/2016 Conservation Service National Cooperative Soil Survey Page 2 of 3 Soil Map—Suffolk County,New York Map Unit Legend Suffolk County,New York(NY103) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI HaA Haven loam,0 to 2 percent 26.4 60.6% slopes HaB Haven loam,2 to 6 percent 0.2 0.5% slopes PIB Plymouth loamy sand,3 to 8 0.3 0.7% percent slopes PIC Plymouth loamy sand,8 to 15 3.2 7.4% percent slopes RdB Riverhead sandy loam,3 to 8 13.4 30.9% percent slopes Totals for Area of Interest 43.6 100.0% 1JS17A Natural Resources Web Soil Survey 9/21/2016 1401 Conservation Service National Cooperative Soil Survey Page 3 of 3 ■ Attachment D New York Natural Heritage Program Coordination P.,293°s.°°Heritage Cntchog,,eVepmtsVSW PPPVSW PPP\5 WP D-1 Attachment D— New York Natural Heritage Program Coordination PP M-12.doc \\vhb\pros\LongIsla nd\29305.00 Heritage Cutchogue\reports\SWPPP\SWPPP\Attachments\D\Attachments.dwq /V ClllasslifedWater Bodies Unique Geological Features CIllasSffiIed Water Bodies F7 State Regulated Freshwater Wetlands LI VVetland ClreekzoneE] Rare Plants and Rare Aniirnals El Significant Natural Cornmunides D Natural Curnmunuties Vicinity n � Background Nlap Adirondack Park Boundary Gounties i ,,r � ,1 f. u � q a SIT EVp 1 0, All NYSDEC Environmental Map NYSDEC September 2016 The Heritage At Cutchogue I of Town of Southold .0Vhb 0 500 1000 Feet Cutchogue,New York PA29305.00 Heritage Cutchogue\reports\SWPPP\SWPPP\Attachments\D\Attachments.dwq "1 �'1,�,,, " SITE o S u rv,-y�r A ch,,,w-a I o g Ar,m (00w,jy cnnr�ipftatiiorl PmaRs(V °vv� Naflonv.fl Rng��fe�Buflkk�g S�hn tNYS Cultural Resource Information System CRIS December 2016 The Heritage At Cutchogueof$I of Town of Southold 0 500 1000 Feet Cutchogue,New York Vhb ■ Attachment E Storm Drainage Calculations P.\29305.00Heritage Cntchog,,eVg�e�repmtsVSW PPPVSW PPP\5 WP E-1 Attachment E— Storm Drainage Calculations PP M-12.doc 90th Percentile Contour(0.1 in) J County Boundary for New York Mate � Vy a� Figure 4.1: 90th Percentile Rainfall in New York State ( -YSDEC,2013) �r Jam. .,-ten ,�, ,• a r S` I a 1 f r ^Z� < r < i 90th Percentile Contour(0.1 in) J County Boundary for New York`Mate Source:New York State Stormwater Management Design Manual,January 2015. C,,tch 5.00 g,,eVx�;`a E-2 Attachment E— Storm Drainage Calculations Cntchog�e�repmtsVSW PPPVSW PPP\5 WP PP M-12.doe Figure 4.2: One-Year Design Storm in New Y oi,k State ( YSDE:C, 2013) —, Ohl 4 5 r a I w4. qq Ii 1 One Year Design Storm Prediction Contour(0.1 in) 0 County Boundary for New Fork State Source:New York State Stormwater Management Design Manual,January 2015 C,,tch 5.00 g,,eVx�;`a E-3 Attachment E— Storm Drainage Calculations Cntchog�e�repmtsVSW PPPVSW PPP\5 WP PP M-12.doc Figure 4..3: Ten-Year Design Storin in New York State (NYSDEC', 2013) �a it l 4 5 10 Year Design Stoma Prediction Contour(0.25 in) u County Boundary for New York State + a.: Source:New York State Stormwater Management Design Manual,January 2015 C,,tch 5.00 g,,eVx�;`a E-4 Attachment E— Storm Drainage Calculations Cntchog�e�repmtsVSW PPPVSW PPP\5 WP PP M-12.doc Figure =4.4: One Hundred-Year Design Storm in New Fork. State (NYSDEC', 21413) i a 100_Y`ear Design Storm Prediction Contour-(0.5 in) Ic — U County Boundary for 1levwY1ork State �4 Source:New York State Stormwater Management Design Manual,January 2015 C,,tch 5.00 g,,eVx�;`a E-5 Attachment E– Storm Drainage Calculations Cntchog�e�repmtsVSW PPPVSW PPP\5 WP PP Mannal2.doc Project#29305.00 The Heritage At Cutchogue NYS Water Quality and Quantity Required Post development Input: Total Project Area 2,006,685 square feet 46.07 acres Impervious Area 835,330 square feet 19.18 acres Gravel Area 29,579 square feet 0.68 acres Pervious Area 1,141,776 square feet 26.21 acres Rainfall as per Local Agency 2 inches 0.17 feet P=90%NYS rainfall 1.5 inches/day i-1-year storm 2.8 inches/hour i-10-year storm 5.0 inches/hour i-100-year storm 9.0 inches/hour %of WQv Provided by Infiltration Practices 100 percent Required Storage as per Local Agency Rainfall as per Contributing Area x Runoff x Local Agency CF (inches) _ Impervious Areas 835,330 1.00 0.17 139,222 Gravel Area 29,579 0.50 0.17 2,465 Pervious Areas 1,141,776 0.30 0.17 57,089 Total Required Storage 198,775 Provided Storage as per Local Agency Type #of Vertical Feet(VF)Provided CF/VF Provided CF Drainge Reserve Area"D" F 34,000 Drainge Reserve Area"E" 86,525 Drainge Reserve Area"L" 89,900 Drainge Reserve Area"S" 111,600 12'0 Drywells 1 862 100.88 86,959 Total Cubic Feet Provided 408,984 Step 2;Total Water Quality Treatment Volume(WQv) WQv=[(P)*(Rv)*(A)]/12 P 1.5 inches Rv 0.4246 percent A 46.07 acres Total WQv = 2.4453 acre-feet = 106,516 cubic feet WQv Provided by Infiltration PROVIDED WQv = 9.3890 acre-feet 408,984 cubic feet Step 3; Calculate Runoff Reduction Volume(RRv) RRv=(%of WQv Provided By Practice)(WQv Provided) RRv = 9.3890 acre-feet 408,984 cubic feet Is RRV>WQv? Yes,No Other Practices Needed Step 4; Apply Standard Practices Not Applicable Step 5; Apply Peak Flow Control Practices Not Applicable Page E-6 Water CalculationsDrainage Hydrologic Analysis Summary A model was developed using HydroCAD software,to analyze the capacity of the designed drainage system during the 100-year storm event in order to demonstrate that the design can accommodate runoff from the Extreme Storm condition. The model uses the TR-55 method to calculate runoff during pre and post-development conditions.In accordance with DEC requirements,the purpose of this model is to demonstrate that peak runoff during the 100-year rain event does not increase between pre and post- development conditions. Pre-Development The hydrology of the existing runoff conditions at the site was analyzed and currently discharges off-site at four locations while the remainder of runoff remains on-site in a natural depression.The pre-development HydroCAD report details these findings through five sub-catchments. Sub-catchments one through four run off-site and sub-catchment five drains to an existing low area and remains on-site.As shown,the pre-development conditions during the peak runoff for the 100-year storm produces a total volume of approximately 6.30 AF(±274,602 CF)of runoff that discharges to neighboring properties. Post-Development Once construction is completed,all on-site runoff will be directed to 19 separate on-site drainage systems consisting of drywells and drainage reserve areas which are designed to recharge runoff into highly porous soils and ultimately to groundwater. The systems provide storage capacity for the volume of a two-inch rainfall over the entire site,as required by the Town of Southold.The soils at the site are within Hydrologic Soil Group B. For the purpose of developing the HydroCAD model,an infiltration rate of 24 inches per hour was used based on the classification and drainable quality of the soils present at the site. Taking into account the provided volume storage and the quantity of runoff recharged at the above infiltration rate,the post-development model as shown on the hydrograph for the Overall Outfall,the peak runoff generated from 100-year storm is approximately 5.14 AF(±224,029 CF). As demonstrated,it was determined that the peak runoff during post-development conditions does not exceed pre-development conditions and therefore meets the requirements outlined in the NYS DEC Stormwater Design Manual. Durins Construction As described in this report,this project will be constructed in four phases. A general schedule of specific tasks for each phase are outlined in a separate Phasing Plan Narrative. Phase 1 of the project includes construction of a portion of the units,the club house,all of the proposed drainage reserve areas and the road bed inclusive of all of the utilities within the right of way. In general,one of the first tasks the contractor will be required to perforin is immediately after clearing of the area of work is rough grading,inclusive of forming the drainage reserve areas,immediately followed by installation of the drainage systems. During the construction process,the site will be required to be graded to direct runoff to the proposed drainage systems. With regard to runoff from the proposed roadway during and after Phase 1,all runoff from the roadway will be captured by the proposed catch basins and directed to either the drainage reserve areas as well as partial drywell systems and allow for infiltration. Therefore,as the site becomes further developed,each drainage sub-area will discharge to the proposed drainage systems and not off site. In conclusion,it can be anticipated that there will be no issues resulting from stormwater runoff during or after construction of this project. 1 Drainage Area 1 2 Drainage Area 2 3 Drainage Area 3 4 Drainage Area 4 5 Drainage Area 5 Subcat Reach on Link Routing Diagram for HydroCAD_PRE Development Prepared by Microsoft, Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC HydroCAD_PRE Development Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 45.996 58 Woods/grass comb., Good, HSG B (1, 2, 3, 4, 5) 45.996 58 TOTAL AREA HydroCAD_PRE Development Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 3 Soil Listing (all nodes) Area Soil Subcatchment (acres) Group Numbers 0.000 HSG A 45.996 HSG B 1, 2, 3,4, 5 0.000 HSG C 0.000 HSG D 0.000 Other 45.996 TOTAL AREA HydroCAD_PRE Development Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 4 Ground Covers (all nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers 0.000 45.996 0.000 0.000 0.000 45.996 Woods/grass comb., Good 1, 2, 3, 4, 5 0.000 45.996 0.000 0.000 0.000 45.996 TOTAL AREA HydroCAD_PRE Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 5 Time span=0.00-28.00 hrs, dt=0.01 hrs, 2801 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment1: Drainage Area 1 Runoff Area=268,335 sf 0.00% Impervious Runoff Depth=3.86" Flow Length=800' Slope=0.0125 '/' Tc=74.6 min CN=58 Runoff=9.41 cfs 1.979 of Subcatchment2: Drainage Area 2 Runoff Area=272,123 sf 0.00% Impervious Runoff Depth>3.85" Flow Length=730' Slope=0.0070 '/' Tc=92.4 min CN=58 Runoff=8.28 cfs 2.007 of Subcatchment3: Drainage Area 3 Runoff Area=185,748 sf 0.00% Impervious Runoff Depth>3.85" Flow Length=600' Slope=0.0040 '/' Tc=109.9 min CN=58 Runoff=5.01 cfs 1.370 of Subcatchment4: Drainage Area 4 Runoff Area=128,600 sf 0.00% Impervious Runoff Depth=3.86" Flow Length=446' Slope=0.0360 '/' Tc=41.7 min CN=58 Runoff=6.33 cfs 0.948 of Subcatchment5: Drainage Area 5 Runoff Area=1,148,776 sf 0.00% Impervious Runoff Depth>3.86" Flow Length=1,140' Slope=0.0120 '/' Tc=86.3 min CN=58 Runoff=36.47 cfs 8.472 of Total Runoff Area = 45.996 ac Runoff Volume = 14.776 of Average Runoff Depth = 3.85" 100.00% Pervious = 45.996 ac 0.00% Impervious = 0.000 ac HydroCAD_PRE Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 6 Summary for Subcatchment 1: Drainage Area 1 Runoff = 9.41 cfs @ 13.02 hrs, Volume= 1.979 af, Depth= 3.86" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 268,335 58 Woods/grass comb., Good, HSG B 268,335 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 59.7 300 0.0125 0.08 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.50" 14.9 500 0.0125 0.56 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 74.6 800 Total Subcatchment 1: Drainage Area 1 Hydrograph 10 9.41 cfs D Runoff 9 - - - Typo III 24-hr - 100 year Rainfall=9.00" Runoff Area=268,385 sf - - -- - R;unoff--Volume=1.979 of - - - RunoffDepth=3.86"- 5. U. Flow Length=800,' . 4: Slope=0.0125 '/' 3: Tc=74.6 m i n CN=58 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_PRE Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 7 Hydrograph for Subcatchment 1: Drainage Area 1 Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 3.86 0.01 0.50 0.04 0.00 0.00 27.00 9.00 3.86 0.00 1.00 0.09 0.00 0.00 27.50 9.00 3.86 0.00 1.50 0.13 0.00 0.00 28.00 9.00 3.86 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.00 0.00 7.50 0.91 0.00 0.00 8.00 1.03 0.00 0.00 8.50 1.16 0.00 0.00 9.00 1.31 0.00 0.00 9.50 1.49 0.00 0.00 10.00 1.70 0.01 0.01 10.50 1.95 0.03 0.05 11.00 2.25 0.08 0.18 11.50 2.68 0.18 0.41 12.00 4.50 0.90 0.98 12.50 6.32 1.96 4.81 13.00 6.75 2.24 9.39 13.50 7.05 2.44 7.03 14.00 7.30 2.61 4.35 14.50 7.51 2.76 3.02 15.00 7.69 2.89 2.30 15.50 7.84 3.00 1.89 16.00 7.97 3.09 1.60 16.50 8.09 3.17 1.35 17.00 8.19 3.25 1.15 17.50 8.27 3.31 1.01 18.00 8.35 3.37 0.90 18.50 8.42 3.42 0.79 19.00 8.49 3.47 0.71 19.50 8.55 3.52 0.66 20.00 8.61 3.56 0.62 20.50 8.67 3.61 0.58 21.00 8.72 3.65 0.55 21.50 8.78 3.69 0.53 22.00 8.83 3.72 0.51 22.50 8.87 3.76 0.48 23.00 8.92 3.79 0.46 23.50 8.96 3.83 0.44 24.00 9.00 3.86 0.41 24.50 9.00 3.86 0.37 25.00 9.00 3.86 0.21 25.50 9.00 3.86 0.08 26.00 9.00 3.86 0.03 HydroCAD_PRE Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 8 Summary for Subcatchment 2: Drainage Area 2 Runoff = 8.28 cfs @ 13.25 hrs, Volume= 2.007 af, Depth> 3.85" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 272,123 58 Woods/grass comb., Good, HSG B 272,123 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 75.3 300 0.0070 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.50" 17.1 430 0.0070 0.42 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 92.4 730 Total Subcatchment 2: Drainage Area 2 Hydrograph - 9 8.28 cfS I ®Runoff - - Type III 24-hr -- 100 year Rainfall=9.00"-- R unoff Are, -22,123 sf-- Runoff Volume=2.007 of 5 Runoff Depth>3.85" 3 u. 4 Flow Length=730' 3 Mope=0.0070 Tc=92.4 min 2 CN=58 0 04'r4' -1,441 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_PRE Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 9 Hydrograph for Subcatchment 2: Drainage Area 2 Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 3.86 0.03 0.50 0.04 0.00 0.00 27.00 9.00 3.86 0.01 1.00 0.09 0.00 0.00 27.50 9.00 3.86 0.01 1.50 0.13 0.00 0.00 28.00 9.00 3.86 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.00 0.00 7.50 0.91 0.00 0.00 8.00 1.03 0.00 0.00 8.50 1.16 0.00 0.00 9.00 1.31 0.00 0.00 9.50 1.49 0.00 0.00 10.00 1.70 0.01 0.00 10.50 1.95 0.03 0.03 11.00 2.25 0.08 0.12 11.50 2.68 0.18 0.30 12.00 4.50 0.90 0.71 12.50 6.32 1.96 3.01 13.00 6.75 2.24 7.47 13.50 7.05 2.44 7.82 14.00 7.30 2.61 5.44 14.50 7.51 2.76 3.77 15.00 7.69 2.89 2.80 15.50 7.84 3.00 2.22 16.00 7.97 3.09 1.84 16.50 8.09 3.17 1.55 17.00 8.19 3.25 1.30 17.50 8.27 3.31 1.11 18.00 8.35 3.37 0.98 18.50 8.42 3.42 0.87 19.00 8.49 3.47 0.77 19.50 8.55 3.52 0.70 20.00 8.61 3.56 0.65 20.50 8.67 3.61 0.61 21.00 8.72 3.65 0.58 21.50 8.78 3.69 0.55 22.00 8.83 3.72 0.53 22.50 8.87 3.76 0.50 23.00 8.92 3.79 0.48 23.50 8.96 3.83 0.46 24.00 9.00 3.86 0.43 24.50 9.00 3.86 0.40 25.00 9.00 3.86 0.29 25.50 9.00 3.86 0.15 26.00 9.00 3.86 0.07 HydroCAD_PRE Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 10 Summary for Subcatchment 3: Drainage Area 3 Runoff = 5.01 cfs @ 13.55 hrs, Volume= 1.370 af, Depth> 3.85" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 185,748 58 Woods/grass comb., Good, HSG B 185,748 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 94.1 300 0.0040 0.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.50" 15.8 300 0.0040 0.32 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 109.9 600 Total Subcatchment 3: Drainage Area 3 Hydrograph 5.01 cfs] D Runoff ,. 5Type III 24-hr 100 year,Rainfall=9.00 ' 4: Runoff Area=105,748 sf Runoff Volume 1.370 of 3. ' Runoff Depith>3.85" LL Flow Length=600' Slope=0.0040 Tc=109.9 min r CN=58 0 4129 �i,- 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_PRE Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 11 Hydrograph for Subcatchment 3: Drainage Area 3 Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 3.86 0.04 0.50 0.04 0.00 0.00 27.00 9.00 3.86 0.02 1.00 0.09 0.00 0.00 27.50 9.00 3.86 0.01 1.50 0.13 0.00 0.00 28.00 9.00 3.86 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.00 0.00 7.50 0.91 0.00 0.00 8.00 1.03 0.00 0.00 8.50 1.16 0.00 0.00 9.00 1.31 0.00 0.00 9.50 1.49 0.00 0.00 10.00 1.70 0.01 0.00 10.50 1.95 0.03 0.01 11.00 2.25 0.08 0.06 11.50 2.68 0.18 0.15 12.00 4.50 0.90 0.36 12.50 6.32 1.96 1.36 13.00 6.75 2.24 3.75 13.50 7.05 2.44 4.99 14.00 7.30 2.61 4.27 14.50 7.51 2.76 3.04 15.00 7.69 2.89 2.27 15.50 7.84 3.00 1.77 16.00 7.97 3.09 1.44 16.50 8.09 3.17 1.19 17.00 8.19 3.25 1.00 17.50 8.27 3.31 0.85 18.00 8.35 3.37 0.73 18.50 8.42 3.42 0.64 19.00 8.49 3.47 0.57 19.50 8.55 3.52 0.51 20.00 8.61 3.56 0.47 20.50 8.67 3.61 0.44 21.00 8.72 3.65 0.41 21.50 8.78 3.69 0.39 22.00 8.83 3.72 0.37 22.50 8.87 3.76 0.35 23.00 8.92 3.79 0.34 23.50 8.96 3.83 0.32 24.00 9.00 3.86 0.30 24.50 9.00 3.86 0.28 25.00 9.00 3.86 0.23 25.50 9.00 3.86 0.15 26.00 9.00 3.86 0.08 HydroCAD_PRE Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 12 Summary for Subcatchment 4: Drainage Area 4 Runoff = 6.33 cfs @ 12.60 hrs, Volume= 0.948 af, Depth= 3.86" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 128,600 58 Woods/grass comb., Good, HSG B 128,600 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 39.1 300 0.0360 0.13 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.50" 2.6 146 0.0360 0.95 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 41.7 446 Total Subcatchment 4: Drainage Area 4 Hydrograph 7. 6.33 cfS D Runoff 6 Type III 24-hr 1 00 year Rainfa11�=9.001' _ 5- Runoff Area=128,600 sf Runoff Volume=0.948 of 4.. Runoff Depth=3.86" 3.. Flow,Length=446'_ Slope=0.0360 Tc=41.7 m i n CN=58_ 0' 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_PRE Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 13 Hydrograph for Subcatchment 4: Drainage Area 4 Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 3.86 0.00 0.50 0.04 0.00 0.00 27.00 9.00 3.86 0.00 1.00 0.09 0.00 0.00 27.50 9.00 3.86 0.00 1.50 0.13 0.00 0.00 28.00 9.00 3.86 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.00 0.00 7.50 0.91 0.00 0.00 8.00 1.03 0.00 0.00 8.50 1.16 0.00 0.00 9.00 1.31 0.00 0.00 9.50 1.49 0.00 0.00 10.00 1.70 0.01 0.01 10.50 1.95 0.03 0.07 11.00 2.25 0.08 0.17 11.50 2.68 0.18 0.35 12.00 4.50 0.90 1.11 12.50 6.32 1.96 6.06 13.00 6.75 2.24 3.94 13.50 7.05 2.44 1.87 14.00 7.30 2.61 1.26 14.50 7.51 2.76 0.99 15.00 7.69 2.89 0.85 15.50 7.84 3.00 0.74 16.00 7.97 3.09 0.64 16.50 8.09 3.17 0.54 17.00 8.19 3.25 0.48 17.50 8.27 3.31 0.43 18.00 8.35 3.37 0.38 18.50 8.42 3.42 0.33 19.00 8.49 3.47 0.31 19.50 8.55 3.52 0.29 20.00 8.61 3.56 0.28 20.50 8.67 3.61 0.26 21.00 8.72 3.65 0.25 21.50 8.78 3.69 0.24 22.00 8.83 3.72 0.23 22.50 8.87 3.76 0.22 23.00 8.92 3.79 0.21 23.50 8.96 3.83 0.20 24.00 9.00 3.86 0.19 24.50 9.00 3.86 0.12 25.00 9.00 3.86 0.02 25.50 9.00 3.86 0.00 26.00 9.00 3.86 0.00 HydroCAD_PRE Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 14 Summary for Subcatchment 5: Drainage Area 5 Runoff = 36.47 cfs @ 13.14 hrs, Volume= 8.472 af, Depth> 3.86" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 1,148,776 58 Woods/grass comb., Good, HSG B 1,148,776 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 60.7 300 0.0120 0.08 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.50" 25.6 840 0.0120 0.55 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 86.3 1,140 Total Subcatchment 5: Drainage Area 5 Hydrograph 40 ®Runoff 38 , 36.47 cfs 36 ;Type III 24-hr 3 . 342 100 year Rainfal1=9.00" z8,' Runoff �4rea=1,148,776 sf 26' Runoff Volume=8.472 of 22 Runoff Depth>3.86" 0 20:::18 Flow Length=1,140` �. , 16` Slope=0.0120 '/' 14 ' Tc=86.3 m i n 10 ' CN=58 8: 6. 2' / 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_PRE Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 15 Hydrograph for Subcatchment 5: Drainage Area 5 Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 3.86 0.09 0.50 0.04 0.00 0.00 27.00 9.00 3.86 0.04 1.00 0.09 0.00 0.00 27.50 9.00 3.86 0.02 1.50 0.13 0.00 0.00 28.00 9.00 3.86 0.01 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.00 0.00 7.50 0.91 0.00 0.00 8.00 1.03 0.00 0.00 8.50 1.16 0.00 0.00 9.00 1.31 0.00 0.00 9.50 1.49 0.00 0.00 10.00 1.70 0.01 0.01 10.50 1.95 0.03 0.16 11.00 2.25 0.08 0.60 11.50 2.68 0.18 1.42 12.00 4.50 0.90 3.34 12.50 6.32 1.96 15.11 13.00 6.75 2.24 34.56 13.50 7.05 2.44 32.66 14.00 7.30 2.61 21.41 14.50 7.51 2.76 14.84 15.00 7.69 2.89 11.10 15.50 7.84 3.00 8.89 16.00 7.97 3.09 7.42 16.50 8.09 3.17 6.25 17.00 8.19 3.25 5.26 17.50 8.27 3.31 4.56 18.00 8.35 3.37 4.03 18.50 8.42 3.42 3.57 19.00 8.49 3.47 3.17 19.50 8.55 3.52 2.90 20.00 8.61 3.56 2.71 20.50 8.67 3.61 2.55 21.00 8.72 3.65 2.42 21.50 8.78 3.69 2.31 22.00 8.83 3.72 2.20 22.50 8.87 3.76 2.10 23.00 8.92 3.79 2.01 23.50 8.96 3.83 1.91 24.00 9.00 3.86 1.81 24.50 9.00 3.86 1.65 25.00 9.00 3.86 1.12 25.50 9.00 3.86 0.52 26.00 9.00 3.86 0.22 ( A } Al Drain\age Area A Drainage Sys m A B " B-1 (B) Drainage Area B Drainage Syst B C C-1 Drainage Area C Drainage Syste C U " D-1 Drainage Area D Drainage System D (E) Drainage Area E Drainage System E F F-1 Drainage Area F Drainage System F U " G1 Drainage Area G Drainage System G () H-1 Drainage Area H Drainage System H DrainageArrea I Drainage System H 2L all Overall Drainage Area J Drainage System J "A Drainage Area K Drainage System K L L-1 Drainage Area L Drainage System U " Drainage Area M Drainage System (NI N-1 Drainage Area N Drainage Syste O O-1 Drainage Area O Drainage Syste P " P-1 DrainageArea P Drainage Syste P Q " Q-1 Drainage Area Q Drainage Sys m Q R R-1 Drainage Area R Drainage System P S S-1 Drainage Area S Drainage System S Subcat Reach on Link Routing Diagram for HydroCAD_POST Development Prepared by Microsoft, Printed 12/21/2016 HydroCAD®10.00-18 s/n 01038 @2016 HydroCAD Software Solutions LLC HydroCAD_POST Development Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 26.212 61 >75% Grass cover, Good, HSG B (A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S) 0.679 85 Gravel, HSG B (E, G, H, I, J, K, M, N, O, Q, R, S) 6.221 98 Paved parking, HSG B (A, B, C, D, E, F, L, M, O, S) 7.780 98 Roofs, HSG B (A, B, C, D, K, L, M, N, O, Q, R, S) 1.240 98 Unconnected pavement, HSG B (A, B, C, D, E, K, L, M, N, O, P, Q, S) 3.935 98 Water Surface, HSG B (C, D, E, L, S) 46.067 77 TOTAL AREA HydroCAD_POST Development Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 3 Soil Listing (all nodes) Area Soil Subcatchment (acres) Group Numbers 0.000 HSG A 46.067 HSG B A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S 0.000 HSG C 0.000 HSG D 0.000 Other 46.067 TOTAL AREA HydroCAD_POST Development Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 4 Ground Covers (all nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers 0.000 26.212 0.000 0.000 0.000 26.212 >75% Grass cover, Good A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S 0.000 0.679 0.000 0.000 0.000 0.679 Gravel E, G, H, I, J, K, M, N, O, Q, R, S 0.000 6.221 0.000 0.000 0.000 6.221 Paved parking A, B, C, D, E, F, L, M, O, S 0.000 7.780 0.000 0.000 0.000 7.780 Roofs A, B, C, D, K, L, M, N, O, Q, R, S 0.000 1.240 0.000 0.000 0.000 1.240 Unconnected pavement A, B, C, D, E, K, L, M, N, O, P, Q, S 0.000 3.935 0.000 0.000 0.000 3.935 Water Surface C, D, E, L, S 0.000 46.067 0.000 0.000 0.000 46.067 TOTAL AREA HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 5 Time span=0.00-28.00 hrs, dt=0.01 hrs, 2801 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method SubcatchmentA: Drainage Area A Runoff Area=126.450 sf 29.43% Impervious Runoff Depth=5.58" Flow Length=160' Slope=0.0060 '/' Tc=22.1 min CN=72 Runoff=12.29 cfs 1.350 of SubcatchmentB: Drainage Area B Runoff Area=61.365 sf 24.81% Impervious Runoff Depth=5.33" Flow Length=117' Slope=0.0210 '/' Tc=10.4 min CN=70 Runoff=7.60 cfs 0.626 of SubcatchmentC: Drainage Area C Runoff Area=196.914 sf 39.08% Impervious Runoff Depth=5.95" Flow Length=300' Slope=0.0140 '/' Tc=26.0 min CN=75 Runoff=18.92 cfs 2.242 of SubcatchmentD: Drainage Area D Runoff Area=192,795sf 37.98% Impervious Runoff Depth=5.95" Flow Length=275' Slope=0.0180 '/' Tc=22.0 min CN=75 Runoff=19.93 cfs 2.195 of SubcatchmentE: Drainage Area E Runoff Area=176,647sf 29.15% Impervious Runoff Depth=5.58" Flow Length=157' Slope=0.0400 '/' Tc=10.2 min UI Adjusted CN=72 Runoff=23.00 cfs 1.886 of SubcatchmentF: Drainage Area F Runoff Area=11.703 sf 57.45% Impervious Runoff Depth=6.81" Flow Length=146' Slope=0.0420 '/' Tc=1.2 min CN=82 Runoff=2.47 cfs 0.153 of SubcatchmentG: Drainage Area G Runoff Area=50.592 sf 0.00% Impervious Runoff Depth=4.35" Flow Length=269' Slope=0.0020 '/' Tc=51.9 min CN=62 Runoff=2.52 cfs 0.421 of SubcatchmentH: Drainage Area H Runoff Area=43.358 sf 0.00% Impervious Runoff Depth=4.47" Flow Length=185' Slope=0.0020 '/' Tc=38.5 min CN=63 Runoff=2.61 cfs 0.371 of Subcatchmentl: Drainage Area I Runoff Area=55.891 sf 0.00% Impervious Runoff Depth=4.35" Flow Length=161' Slope=0.0030 '/' Tc=29.3 min CN=62 Runoff=3.72 cfs 0.465 of SubcatchmentJ: Drainage Area J Runoff Area=72.695 sf 0.00% Impervious Runoff Depth=4.35" Flow Length=252' Slope=0.0160 '/' Tc=21.5 min CN=62 Runoff=5.54 cfs 0.605 of SubcatchmentK: Drainage Area K Runoff Area=39.627 sf 6.90% Impervious Runoff Depth=4.72" Flow Length=192' Slope=0.0128 '/' Tc=18.9 min CN=65 Runoff=3.46 cfs 0.358 of Subcatchmentl: Drainage Area L RunoffArea=207.895 sf 85.59% Impervious Runoff Depth=8.16" Flow Length=166' Slope=0.0300 '/' Tc=1.5 min CN=93 Runoff=48.55 cfs 3.244 of SubcatchmentH: Drainage Area M Runoff Area=46.409 sf 22.18% Impervious Runoff Depth=5.21" Flow Length=171' Slope=0.0161 T Tc=15.7 min UI Adjusted CN=69 Runoff=4.84 cfs 0.463 of SubcatchmentN: Drainage Area N RunoffArea=103.449 sf 18.45% Impervious Runoff Depth=5.09" Flow Length=300' Slope=0.0150 '/' Tc=25.3 min CN=68 Runoff=8.66 cfs 1.007 of Subcatchment0: Drainage Area O Runoff Area=27.703 sf 87.10% Impervious Runoff Depth=8.28" Flow Length=184' Slope=0.0050 '/' Tc=26.6 min CN=94 Runoff=3.35 cfs 0.439 of SubcatchmentP: Drainage Area P Runoff Area=51.695 sf 3.48% Impervious Runoff Depth=4.35" Flow Length=144' Slope=0.0122 '/' Tc=15.3 min CN=62 Runoff=4.52 cfs 0.430 of HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 6 SubcatchmentQ: Drainage Area Q Runoff Area=101.847 sf 27.46% Impervious Runoff Depth=5.46" Flow Length=215' Slope=0.0160 '/' Tc=18.9 min UI Adjusted CN=71 Runoff=10.32 cfs 1.064 of SubcatchmentR: Drainage Area R RunoffArea=106.453 sf 16.87% Impervious Runoff Depth=5.09" Flow Length=300' Slope=0.0090 '/' Tc=31.1 min CN=68 Runoff=8.10 cfs 1.036 of SubcatchmentS: Drainage Area S RunoffArea=333.197 sf 87.82% Impervious Runoff Depth=8.28" Flow Length=90' Slope=0.0011 T Tc=27.5 min CN=94 Runoff=39.72 cfs 5.276 of Pond A-1: Drainage System A Peak Elev=29.14' Storage=11.241 cf Inflow=12.29 cfs 1.350 of Discarded=0.62 cfs 0.818 of Primary=11.66 cfs 0.532 of Outflow=12.28 cfs 1.350 of Pond B-1: Drainage System B Peak EIev=31.80' Storage=4,920 cf Inflow=7.60 cfs 0.626 of Discarded=0.09 cfs 0.149 of Primary=7.50 cfs 0.395 of Outflow=7.59 cfs 0.545 of Pond C-1: Drainage System C Peak EIev=28.89' Storage=19.579 cf Inflow=18.92 cfs 2.242 of Discarded=0.90 cfs 1.328 of Primary=18.01 cfs 0.916 of Outflow=18.91 cfs 2.244 of Pond D-1: Drainage System D Peak EIev=28.82' Storage=13.454 cf Inflow=19.93 cfs 2.195 of Outflow=10.80 cfs 2.195 of Pond E-1: Drainage System E Peak EIev=25.71' Storage=18.329 cf Inflow=23.00 cfs 1.886 of Outflow=7.22 cfs 1.886 of Pond F-1: Drainage System F Peak EIev=21.04' Storage=1,440 cf Inflow=2.47 cfs 0.153 of Discarded=0.11 cfs 0.114 of Primary=2.49 cfs 0.038 of Outflow=2.60 cfs 0.152 of Pond G-1: Drainage System G Peak EIev=27.64' Storage=2,449 cf Inflow=2.52 cfs 0.421 of Discarded=0.11 cfs 0.162 of Primary=2.41 cfs 0.240 of Outflow=2.52 cfs 0.402 of Pond H-1: Drainage System H Peak EIev=29.15' Storage=2,449 cf Inflow=2.61 cfs 0.371 of Discarded=0.11 cfs 0.164 of Primary=2.50 cfs 0.195 of Outflow=2.61 cfs 0.359 of Pond 1-1: Drainage System H Peak EIev=28.65' Storage=3,069 cf Inflow=3.72 cfs 0.465 of Discarded=0.17 cfs 0.236 of Primary=3.55 cfs 0.229 of Outflow=3.72 cfs 0.465 of Pond J-1: Drainage System J Peak EIev=23.94' Storage=3,990 cf Inflow=5.54 cfs 0.605 of Discarded=0.17 cfs 0.248 of Primary=5.37 cfs 0.329 of Outflow=5.54 cfs 0.578 of Pond K-1: Drainage System K Peak EIev=29.68' Storage=2,457 cf Inflow=3.46 cfs 0.358 of Discarded=0.11 cfs 0.168 of Primary=3.35 cfs 0.183 of Outflow=3.46 cfs 0.351 of Pond L-1: Drainage System L Peak EIev=28.22' Storage=9,610 cf Inflow=48.55 cfs 3.244 of Outflow=24.20 cfs 3.243 of Pond M-1: Drainage System K Peak EIev=30.42' Storage=4,286 cf Inflow=4.84 cfs 0.463 of Discarded=0.17 cfs 0.256 of Primary=4.66 cfs 0.196 of Outflow=4.82 cfs 0.452 of Pond N-1: Drainage System K Peak EIev=28.68' Storage=7,654 cf Inflow=8.66 cfs 1.007 of Discarded=0.28 cfs 0.427 of Primary=8.37 cfs 0.518 of Outflow=8.65 cfs 0.945 of Pond 0-1: Drainage System K Peak EIev=31.09' Storage=4,581 cf Inflow=3.35 cfs 0.439 of Discarded=0.28 cfs 0.345 of Primary=2.86 cfs 0.094 of Outflow=3.14 cfs 0.439 of HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 7 Pond P-1: Drainage System P Peak Elev=28.72' Storage=2,868 cf Inflow=4.52 cfs 0.430 of Discarded=0.11 cfs 0.167 of Primary=4.40 cfs 0.240 of Outflow=4.51 cfs 0.407 of Pond Q-1: Drainage System Q Peak Elev=28.68' Storage=9,185 cf Inflow=10.32 cfs 1.064 of Discarded=0.34 cfs 0.521 of Primary=9.98 cfs 0.494 of Outflow=10.31 cfs 1.014 of Pond R-1: Drainage System P Peak Elev=28.67' Storage=7,649 cf Inflow=8.10 cfs 1.036 of Discarded=0.28 cfs 0.426 of Primary=7.82 cfs 0.544 of Outflow=8.10 cfs 0.970 of Pond S-1: Drainage System S Peak Elev=26.88' Storage=30,166 cf Inflow=39.72 cfs 5.276 of Outflow=20.29 cfs 5.276 of Link 2L: Outfall Overall Inflow=78.97 cfs 5.143 of Primary=78.97 cfs 5.143 of Total Runoff Area = 46.067 ac Runoff Volume = 23.629 of Average Runoff Depth = 6.16" 58.37% Pervious = 26.891 ac 41.63% Impervious = 19.177 ac HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 8 Summary for Subcatchment A: Drainage Area A Runoff = 12.29 cfs @ 12.30 hrs, Volume= 1.350 af, Depth= 5.58" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 19,064 98 Roofs, HSG B 16,241 98 Paved parking, HSG B 0 85 Gravel, HSG B 0 98 Water Surface, HSG B 1,911 98 Unconnected pavement, HSG B 89,234 61 >75% Grass cover, Good, HSG B 126,450 72 Weighted Average 89,234 70.57% Pervious Area 37,216 29.43% Impervious Area 1,911 5.13% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 22.1 160 0.0060 0.12 Sheet Flow, Grass: Short n= 0.150 P2= 3.50" Subcatchment A: Drainage Area A Hydrograph ®Runoff 13 12.29 cfs 12 Type III 24-hr 11 100 year Rainfall=9.00" _ Runoff Area=126,450 sf- - - 9 Runoff-Volume=1.350 af - g,: w Runoff Depth=5.58 6' , i; FlowLength=160' Slope=0.0060 Tc=22.1 m i n 3 CN=72 z:. 6 -11 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 9 Hydrograph for Subcatchment A: Drainage Area A Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 5.58 0.00 0.50 0.04 0.00 0.00 27.00 9.00 5.58 0.00 1.00 0.09 0.00 0.00 27.50 9.00 5.58 0.00 1.50 0.13 0.00 0.00 28.00 9.00 5.58 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.00 0.00 7.50 0.91 0.00 0.02 8.00 1.03 0.01 0.05 8.50 1.16 0.03 0.10 9.00 1.31 0.06 0.17 9.50 1.49 0.11 0.26 10.00 1.70 0.18 0.36 10.50 1.95 0.27 0.51 11.00 2.25 0.40 0.74 11.50 2.68 0.63 1.17 12.00 4.50 1.82 4.50 12.50 6.32 3.26 9.12 13.00 6.75 3.62 2.67 13.50 7.05 3.87 1.58 14.00 7.30 4.09 1.29 14.50 7.51 4.26 1.08 15.00 7.69 4.42 0.95 15.50 7.84 4.56 0.82 16.00 7.97 4.67 0.69 16.50 8.09 4.77 0.59 17.00 8.19 4.86 0.53 17.50 8.27 4.94 0.47 18.00 8.35 5.00 0.41 18.50 8.42 5.07 0.37 19.00 8.49 5.13 0.35 19.50 8.55 5.18 0.33 20.00 8.61 5.24 0.32 20.50 8.67 5.29 0.30 21.00 8.72 5.34 0.29 21.50 8.78 5.38 0.27 22.00 8.83 5.43 0.26 22.50 8.87 5.47 0.25 23.00 8.92 5.51 0.24 23.50 8.96 5.55 0.22 24.00 9.00 5.58 0.21 24.50 9.00 5.58 0.03 25.00 9.00 5.58 0.00 25.50 9.00 5.58 0.00 26.00 9.00 5.58 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 10 Summary for Subcatchment B: Drainage Area B Runoff = 7.60 cfs @ 12.14 hrs, Volume= 0.626 af, Depth= 5.33" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 2,936 98 Roofs, HSG B 10,918 98 Paved parking, HSG B 0 85 Gravel, HSG B 0 98 Water Surface, HSG B 1,373 98 Unconnected pavement, HSG B 46,138 61 >75% Grass cover, Good, HSG B 61,365 70 Weighted Average 46,138 75.19% Pervious Area 15,227 24.81% Impervious Area 1,373 9.02% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.4 117 0.0210 0.19 Sheet Flow, Grass: Short n= 0.150 P2= 3.50" Subcatchment B: Drainage Area B Hydrograph $ 7.60 cfs Type III 24-hr 7 100 year Rainfall=9.00" 6 Runoff Area=61,365 sf s: - Runoff Volume=0.626 af- _ Runoff Depith=5.33"_ 4 Flow Length=117' 3.. i Slope=0.0210 /�- Tc=10.4 min_ CN=70 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 11 Hydrograph for Subcatchment B: Drainage Area B Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 5.33 0.00 0.50 0.04 0.00 0.00 27.00 9.00 5.33 0.00 1.00 0.09 0.00 0.00 27.50 9.00 5.33 0.00 1.50 0.13 0.00 0.00 28.00 9.00 5.33 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.00 0.00 7.50 0.91 0.00 0.00 8.00 1.03 0.01 0.02 8.50 1.16 0.02 0.04 9.00 1.31 0.04 0.07 9.50 1.49 0.08 0.12 10.00 1.70 0.14 0.17 10.50 1.95 0.22 0.25 11.00 2.25 0.34 0.36 11.50 2.68 0.54 0.64 12.00 4.50 1.67 3.61 12.50 6.32 3.06 2.67 13.00 6.75 3.41 0.92 13.50 7.05 3.66 0.69 14.00 7.30 3.87 0.57 14.50 7.51 4.04 0.49 15.00 7.69 4.20 0.43 15.50 7.84 4.33 0.37 16.00 7.97 4.44 0.31 16.50 8.09 4.54 0.27 17.00 8.19 4.62 0.24 17.50 8.27 4.70 0.21 18.00 8.35 4.77 0.19 18.50 8.42 4.83 0.17 19.00 8.49 4.89 0.16 19.50 8.55 4.94 0.16 20.00 8.61 5.00 0.15 20.50 8.67 5.05 0.14 21.00 8.72 5.09 0.13 21.50 8.78 5.14 0.13 22.00 8.83 5.18 0.12 22.50 8.87 5.22 0.12 23.00 8.92 5.26 0.11 23.50 8.96 5.30 0.10 24.00 9.00 5.33 0.10 24.50 9.00 5.33 0.00 25.00 9.00 5.33 0.00 25.50 9.00 5.33 0.00 26.00 9.00 5.33 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 12 Summary for Subcatchment C: Drainage Area C Runoff = 18.92 cfs @ 12.34 hrs, Volume= 2.242 af, Depth= 5.95" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 29,330 98 Roofs, HSG B 38,063 98 Paved parking, HSG B 0 85 Gravel, HSG B 5,321 98 Water Surface, HSG B 4,244 98 Unconnected pavement, HSG B 119,956 61 >75% Grass cover, Good, HSG B 196,914 75 Weighted Average 119,956 60.92% Pervious Area 76,958 39.08% Impervious Area 4,244 5.51% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 26.0 300 0.0140 0.19 Sheet Flow, Grass: Short n= 0.150 P2= 3.50" Subcatchment C: Drainage Area C Hydrograph 21 20 18.92...cfs 19 '. Type III 24-hr 18r 17 100 year Rainfall=9.00" - 16 ' 15 I� Runoff Area=196,914 sf 14:13 ' i Runoff-Volume=2.242 of F 12. Runoff Depth=5.95 10 FlowLength=300'- 8 Slope=0.0140 '/'_ . ' Tc=26.0 min 5' 4CN=75 3I.' 2.' 5"i Ri 0.1. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 13 Hydrograph for Subcatchment C: Drainage Area C Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 5.95 0.00 0.50 0.04 0.00 0.00 27.00 9.00 5.95 0.00 1.00 0.09 0.00 0.00 27.50 9.00 5.95 0.00 1.50 0.13 0.00 0.00 28.00 9.00 5.95 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.01 0.04 7.50 0.91 0.02 0.08 8.00 1.03 0.03 0.14 8.50 1.16 0.06 0.22 9.00 1.31 0.10 0.34 9.50 1.49 0.16 0.49 10.00 1.70 0.24 0.67 10.50 1.95 0.36 0.92 11.00 2.25 0.51 1.28 11.50 2.68 0.76 1.94 12.00 4.50 2.05 6.49 12.50 6.32 3.55 16.22 13.00 6.75 3.93 5.04 13.50 7.05 4.19 2.69 14.00 7.30 4.41 2.13 14.50 7.51 4.60 1.76 15.00 7.69 4.76 1.55 15.50 7.84 4.90 1.34 16.00 7.97 5.02 1.13 16.50 8.09 5.12 0.95 17.00 8.19 5.21 0.85 17.50 8.27 5.29 0.76 18.00 8.35 5.36 0.67 18.50 8.42 5.42 0.60 19.00 8.49 5.49 0.56 19.50 8.55 5.54 0.54 20.00 8.61 5.60 0.51 20.50 8.67 5.65 0.48 21.00 8.72 5.70 0.46 21.50 8.78 5.75 0.44 22.00 8.83 5.79 0.42 22.50 8.87 5.84 0.40 23.00 8.92 5.88 0.38 23.50 8.96 5.92 0.36 24.00 9.00 5.95 0.34 24.50 9.00 5.95 0.08 25.00 9.00 5.95 0.00 25.50 9.00 5.95 0.00 26.00 9.00 5.95 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 14 Summary for Subcatchment D: Drainage Area D Runoff = 19.93 cfs @ 12.30 hrs, Volume= 2.195 af, Depth= 5.95" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 17,958 98 Roofs, HSG B 21,933 98 Paved parking, HSG B 0 85 Gravel, HSG B 29,992 98 Water Surface, HSG B 3,333 98 Unconnected pavement, HSG B 119,579 61 >75% Grass cover, Good, HSG B 192,795 75 Weighted Average 119,579 62.02% Pervious Area 73,216 37.98% Impervious Area 3,333 4.55% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 22.0 275 0.0180 0.21 Sheet Flow, Grass: Short n= 0.150 P2= 3.50" Subcatchment D: Drainage Area D Hydrograph 22 ®Runoff 21:::: 19.93 cfs 2 Type III 24-hr 18. " 100 year Rainfall=9.00 17 16- Runoff Area=192,795 sf 15 , 14 % Runoff Volume=2.195 of y 13-:: au 12 Runoff Depth=5.95" LL i Flow Length=275' 9 - Slope=0.0180 '/'- - 7 ' 6'' TC=22.0_min_ 4 CN=75 2 , �i;; HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 15 Hydrograph for Subcatchment D: Drainage Area D Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 5.95 0.00 0.50 0.04 0.00 0.00 27.00 9.00 5.95 0.00 1.00 0.09 0.00 0.00 27.50 9.00 5.95 0.00 1.50 0.13 0.00 0.00 28.00 9.00 5.95 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.01 7.00 0.81 0.01 0.04 7.50 0.91 0.02 0.09 8.00 1.03 0.03 0.15 8.50 1.16 0.06 0.23 9.00 1.31 0.10 0.35 9.50 1.49 0.16 0.50 10.00 1.70 0.24 0.68 10.50 1.95 0.36 0.93 11.00 2.25 0.51 1.30 11.50 2.68 0.76 2.02 12.00 4.50 2.05 7.53 12.50 6.32 3.55 14.59 13.00 6.75 3.93 4.21 13.50 7.05 4.19 2.49 14.00 7.30 4.41 2.03 14.50 7.51 4.60 1.69 15.00 7.69 4.76 1.49 15.50 7.84 4.90 1.28 16.00 7.97 5.02 1.08 16.50 8.09 5.12 0.92 17.00 8.19 5.21 0.82 17.50 8.27 5.29 0.73 18.00 8.35 5.36 0.65 18.50 8.42 5.42 0.58 19.00 8.49 5.49 0.55 19.50 8.55 5.54 0.52 20.00 8.61 5.60 0.49 20.50 8.67 5.65 0.47 21.00 8.72 5.70 0.45 21.50 8.78 5.75 0.43 22.00 8.83 5.79 0.41 22.50 8.87 5.84 0.39 23.00 8.92 5.88 0.37 23.50 8.96 5.92 0.35 24.00 9.00 5.95 0.33 24.50 9.00 5.95 0.05 25.00 9.00 5.95 0.00 25.50 9.00 5.95 0.00 26.00 9.00 5.95 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 16 Summary for Subcatchment E: Drainage Area E Runoff = 23.00 cfs @ 12.14 hrs, Volume= 1.886 af, Depth= 5.58" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Adj Description 0 98 Roofs, HSG B 20,645 98 Paved parking, HSG B 5,923 85 Gravel, HSG B 29,329 98 Water Surface, HSG B 1,519 98 Unconnected pavement, HSG B 119,231 61 >75% Grass cover, Good, HSG B 176,647 73 72 Weighted Average, UI Adjusted 125,154 70.85% Pervious Area 51,493 29.15% Impervious Area 1,519 2.95% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.2 157 0.0400 0.26 Sheet Flow, Grass: Short n= 0.150 P2= 3.50" Subcatchment E: Drainage Area E Hydrograph ®Runoff 2423.00 cfs 23,' ;. Ty.pe III 24 21 -hr 22�, rr, 20 100 year Rainfall=9.00'.'= 18:: Runoff Area=176,647 sf 16 �� - Runoff-Volume=1.8,96 of- � 14 Runoff Depth=5.58"' 13i 012!,' EL 11Flow Length-157' Slope=0.0400 T 10' 7„�, Tc=10.2 min 6�', 5 UI Adjusted CN=72 4^ 34 2' 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 17 Hydrograph for Subcatchment E: Drainage Area E Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 5.58 0.00 0.50 0.04 0.00 0.00 27.00 9.00 5.58 0.00 1.00 0.09 0.00 0.00 27.50 9.00 5.58 0.00 1.50 0.13 0.00 0.00 28.00 9.00 5.58 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.00 0.00 7.50 0.91 0.00 0.04 8.00 1.03 0.01 0.09 8.50 1.16 0.03 0.17 9.00 1.31 0.06 0.27 9.50 1.49 0.11 0.41 10.00 1.70 0.18 0.57 10.50 1.95 0.27 0.82 11.00 2.25 0.40 1.16 11.50 2.68 0.63 2.02 12.00 4.50 1.82 11.13 12.50 6.32 3.26 7.83 13.00 6.75 3.62 2.71 13.50 7.05 3.87 2.03 14.00 7.30 4.09 1.67 14.50 7.51 4.26 1.43 15.00 7.69 4.42 1.26 15.50 7.84 4.56 1.08 16.00 7.97 4.67 0.90 16.50 8.09 4.77 0.79 17.00 8.19 4.86 0.71 17.50 8.27 4.94 0.63 18.00 8.35 5.00 0.55 18.50 8.42 5.07 0.50 19.00 8.49 5.13 0.48 19.50 8.55 5.18 0.46 20.00 8.61 5.24 0.43 20.50 8.67 5.29 0.41 21.00 8.72 5.34 0.40 21.50 8.78 5.38 0.38 22.00 8.83 5.43 0.36 22.50 8.87 5.47 0.34 23.00 8.92 5.51 0.32 23.50 8.96 5.55 0.30 24.00 9.00 5.58 0.29 24.50 9.00 5.58 0.00 25.00 9.00 5.58 0.00 25.50 9.00 5.58 0.00 26.00 9.00 5.58 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 18 Summary for Subcatchment F: Drainage Area F Runoff = 2.47 cfs @ 12.02 hrs, Volume= 0.153 af, Depth= 6.81" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 0 98 Roofs, HSG B 6,723 98 Paved parking, HSG B 0 85 Gravel, HSG B 0 98 Water Surface, HSG B 0 98 Unconnected pavement, HSG B 4,980 61 >75% Grass cover, Good, HSG B 11,703 82 Weighted Average 4,980 42.55% Pervious Area 6,723 57.45% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.2 146 0.0420 2.09 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.50" Subcatchment F: Drainage Area F Hydrograph 2.47 cfs D Runoff Type III 24-hr 100 year Rainfall=9.00"_ 2,.., Runoff Area=11,703 sf Runoff Volume=0.153 of 1 Runoff Depth=6.81" Flow Length=146' 1,.. Slope=0.0420 Tc=1.2 min DN=82 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 19 Hydrograph for Subcatchment F: Drainage Area F Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 6.81 0.00 0.50 0.04 0.00 0.00 27.00 9.00 6.81 0.00 1.00 0.09 0.00 0.00 27.50 9.00 6.81 0.00 1.50 0.13 0.00 0.00 28.00 9.00 6.81 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.01 0.00 6.00 0.65 0.02 0.01 6.50 0.73 0.03 0.01 7.00 0.81 0.05 0.01 7.50 0.91 0.08 0.02 8.00 1.03 0.12 0.02 8.50 1.16 0.18 0.03 9.00 1.31 0.25 0.04 9.50 1.49 0.34 0.06 10.00 1.70 0.46 0.07 10.50 1.95 0.62 0.10 11.00 2.25 0.82 0.12 11.50 2.68 1.13 0.22 12.00 4.50 2.64 2.27 12.50 6.32 4.28 0.31 13.00 6.75 4.68 0.17 13.50 7.05 4.96 0.14 14.00 7.30 5.20 0.11 14.50 7.51 5.39 0.10 15.00 7.69 5.56 0.09 15.50 7.84 5.71 0.07 16.00 7.97 5.84 0.06 16.50 8.09 5.94 0.05 17.00 8.19 6.04 0.05 17.50 8.27 6.12 0.04 18.00 8.35 6.19 0.04 18.50 8.42 6.26 0.04 19.00 8.49 6.33 0.03 19.50 8.55 6.39 0.03 20.00 8.61 6.44 0.03 20.50 8.67 6.50 0.03 21.00 8.72 6.55 0.03 21.50 8.78 6.60 0.03 22.00 8.83 6.65 0.03 22.50 8.87 6.69 0.02 23.00 8.92 6.74 0.02 23.50 8.96 6.78 0.02 24.00 9.00 6.81 0.02 24.50 9.00 6.81 0.00 25.00 9.00 6.81 0.00 25.50 9.00 6.81 0.00 26.00 9.00 6.81 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 20 Summary for Subcatchment G: Drainage Area G Runoff = 2.52 cfs @ 12.74 hrs, Volume= 0.421 af, Depth= 4.35" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 0 98 Roofs, HSG B 0 98 Paved parking, HSG B 2,358 85 Gravel, HSG B 0 98 Water Surface, HSG B 0 98 Unconnected pavement, HSG B 48,234 61 >75% Grass cover, Good, HSG B 50,592 62 Weighted Average 50,592 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 51.9 269 0.0020 0.09 Sheet Flow, Grass: Short n= 0.150 P2= 3.50" Subcatchment G: Drainage Area G Hydrograph 2.52 CfS 0 Runoff Type III 24-hr 100 year Rainfall=9.00" 2... - Runoff Area=50,592 sf Runoff Volume=0.421 of Runoff Depith=4.35" FlowLen'gth=269,' 1,..- Slope=0.0020 Tc=51.9 min CN=62 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 21 Hydrograph for Subcatchment G: Drainage Area G Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 4.35 0.00 0.50 0.04 0.00 0.00 27.00 9.00 4.35 0.00 1.00 0.09 0.00 0.00 27.50 9.00 4.35 0.00 1.50 0.13 0.00 0.00 28.00 9.00 4.35 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.00 0.00 7.50 0.91 0.00 0.00 8.00 1.03 0.00 0.00 8.50 1.16 0.00 0.00 9.00 1.31 0.00 0.00 9.50 1.49 0.01 0.01 10.00 1.70 0.03 0.02 10.50 1.95 0.08 0.05 11.00 2.25 0.15 0.10 11.50 2.68 0.28 0.17 12.00 4.50 1.14 0.41 12.50 6.32 2.31 2.10 13.00 6.75 2.62 2.05 13.50 7.05 2.84 1.02 14.00 7.30 3.02 0.63 14.50 7.51 3.18 0.47 15.00 7.69 3.32 0.38 15.50 7.84 3.44 0.33 16.00 7.97 3.54 0.28 16.50 8.09 3.62 0.24 17.00 8.19 3.70 0.21 17.50 8.27 3.77 0.19 18.00 8.35 3.83 0.16 18.50 8.42 3.89 0.15 19.00 8.49 3.94 0.13 19.50 8.55 3.99 0.12 20.00 8.61 4.04 0.12 20.50 8.67 4.08 0.11 21.00 8.72 4.13 0.11 21.50 8.78 4.17 0.10 22.00 8.83 4.21 0.10 22.50 8.87 4.25 0.09 23.00 8.92 4.28 0.09 23.50 8.96 4.32 0.08 24.00 9.00 4.35 0.08 24.50 9.00 4.35 0.06 25.00 9.00 4.35 0.02 25.50 9.00 4.35 0.00 26.00 9.00 4.35 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 22 Summary for Subcatchment H: Drainage Area H Runoff = 2.61 cfs @ 12.54 hrs, Volume= 0.371 af, Depth= 4.47" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 0 98 Roofs, HSG B 0 98 Paved parking, HSG B 3,103 85 Gravel, HSG B 0 98 Water Surface, HSG B 0 98 Unconnected pavement, HSG B 40,255 61 >75% Grass cover, Good, HSG B 43,358 63 Weighted Average 43,358 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 38.5 185 0.0020 0.08 Sheet Flow, Grass: Short n= 0.150 P2= 3.50" Subcatchment H: Drainage Area H Hydrograph 2.61—cfs] 0 Runoff Type III 24-hr 100 year Rainfall=9.00" 2... Runoff Area=43,358 sf Runoff Volume=0.371 of w Runoff Depth=4.47" LL i Flow Length=185' 1 ., Slope=0.0020 Tc=38.5 m i n CN=63 OPP 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 23 Hydrograph for Subcatchment H: Drainage Area H Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 4.47 0.00 0.50 0.04 0.00 0.00 27.00 9.00 4.47 0.00 1.00 0.09 0.00 0.00 27.50 9.00 4.47 0.00 1.50 0.13 0.00 0.00 28.00 9.00 4.47 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.00 0.00 7.50 0.91 0.00 0.00 8.00 1.03 0.00 0.00 8.50 1.16 0.00 0.00 9.00 1.31 0.00 0.00 9.50 1.49 0.02 0.01 10.00 1.70 0.04 0.04 10.50 1.95 0.09 0.07 11.00 2.25 0.17 0.11 11.50 2.68 0.31 0.19 12.00 4.50 1.20 0.56 12.50 6.32 2.40 2.58 13.00 6.75 2.72 1.40 13.50 7.05 2.94 0.65 14.00 7.30 3.13 0.45 14.50 7.51 3.29 0.36 15.00 7.69 3.43 0.31 15.50 7.84 3.55 0.27 16.00 7.97 3.65 0.23 16.50 8.09 3.74 0.19 17.00 8.19 3.82 0.17 17.50 8.27 3.89 0.15 18.00 8.35 3.95 0.14 18.50 8.42 4.00 0.12 19.00 8.49 4.06 0.11 19.50 8.55 4.11 0.11 20.00 8.61 4.16 0.10 20.50 8.67 4.20 0.10 21.00 8.72 4.25 0.09 21.50 8.78 4.29 0.09 22.00 8.83 4.33 0.08 22.50 8.87 4.37 0.08 23.00 8.92 4.40 0.08 23.50 8.96 4.44 0.07 24.00 9.00 4.47 0.07 24.50 9.00 4.47 0.04 25.00 9.00 4.47 0.01 25.50 9.00 4.47 0.00 26.00 9.00 4.47 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 24 Summary for Subcatchment I: Drainage Area I Runoff = 3.72 cfs @ 12.41 hrs, Volume= 0.465 af, Depth= 4.35" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 0 98 Roofs, HSG B 0 98 Paved parking, HSG B 2,620 85 Gravel, HSG B 0 98 Water Surface, HSG B 0 98 Unconnected pavement, HSG B 53,271 61 >75% Grass cover, Good, HSG B 55,891 62 Weighted Average 55,891 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 29.3 161 0.0030 0.09 Sheet Flow, Grass: Short n= 0.150 P2= 3.50" Subcatchment I: Drainage Area I Hydrograph 4...,, CfS Type III 24-hr 100 year Rainfall�=9.00" 3... Runoff Area=55,891 sof Runoff Volume=0.465 of Runoff Depth=4.35"-- ,0 2.., FlowLen'gth=161' Slope=0.0030 1. Tc=29.3 min CN=62 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 25 Hydrograph for Subcatchment I: Drainage Area I Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 4.35 0.00 0.50 0.04 0.00 0.00 27.00 9.00 4.35 0.00 1.00 0.09 0.00 0.00 27.50 9.00 4.35 0.00 1.50 0.13 0.00 0.00 28.00 9.00 4.35 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.00 0.00 7.50 0.91 0.00 0.00 8.00 1.03 0.00 0.00 8.50 1.16 0.00 0.00 9.00 1.31 0.00 0.00 9.50 1.49 0.01 0.02 10.00 1.70 0.03 0.05 10.50 1.95 0.08 0.09 11.00 2.25 0.15 0.15 11.50 2.68 0.28 0.26 12.00 4.50 1.14 0.98 12.50 6.32 2.31 3.56 13.00 6.75 2.62 1.30 13.50 7.05 2.84 0.67 14.00 7.30 3.02 0.52 14.50 7.51 3.18 0.43 15.00 7.69 3.32 0.38 15.50 7.84 3.44 0.33 16.00 7.97 3.54 0.28 16.50 8.09 3.62 0.24 17.00 8.19 3.70 0.21 17.50 8.27 3.77 0.19 18.00 8.35 3.83 0.17 18.50 8.42 3.89 0.15 19.00 8.49 3.94 0.14 19.50 8.55 3.99 0.13 20.00 8.61 4.04 0.13 20.50 8.67 4.08 0.12 21.00 8.72 4.13 0.11 21.50 8.78 4.17 0.11 22.00 8.83 4.21 0.10 22.50 8.87 4.25 0.10 23.00 8.92 4.28 0.09 23.50 8.96 4.32 0.09 24.00 9.00 4.35 0.08 24.50 9.00 4.35 0.03 25.00 9.00 4.35 0.00 25.50 9.00 4.35 0.00 26.00 9.00 4.35 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 26 Summary for Subcatchment J: Drainage Area J Runoff = 5.54 cfs @ 12.30 hrs, Volume= 0.605 af, Depth= 4.35" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 0 98 Roofs, HSG B 0 98 Paved parking, HSG B 2,814 85 Gravel, HSG B 0 98 Water Surface, HSG B 0 98 Unconnected pavement, HSG B 69,881 61 >75% Grass cover, Good, HSG B 72,695 62 Weighted Average 72,695 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 21.5 252 0.0160 0.20 Sheet Flow, Grass: Short n= 0.150 P2= 3.50" Subcatchment J: Drainage Area J Hydrograph 5.54 6CfS 0 Runoff .. Type III 24-h r 5 __. 100 year Rainfall=9.00" Runoff Area=72,695 sf_ 4. Runoff Volume=0.605 of r Runoff Depth=-4.35"_ . 3 � Flow Length=252' Slope=0.01 0 '/' Tc=21.5 min CN=62 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 27 Hydrograph for Subcatchment J: Drainage Area J Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 4.35 0.00 0.50 0.04 0.00 0.00 27.00 9.00 4.35 0.00 1.00 0.09 0.00 0.00 27.50 9.00 4.35 0.00 1.50 0.13 0.00 0.00 28.00 9.00 4.35 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.00 0.00 7.50 0.91 0.00 0.00 8.00 1.03 0.00 0.00 8.50 1.16 0.00 0.00 9.00 1.31 0.00 0.00 9.50 1.49 0.01 0.03 10.00 1.70 0.03 0.07 10.50 1.95 0.08 0.13 11.00 2.25 0.15 0.22 11.50 2.68 0.28 0.40 12.00 4.50 1.14 1.83 12.50 6.32 2.31 4.17 13.00 6.75 2.62 1.27 13.50 7.05 2.84 0.78 14.00 7.30 3.02 0.64 14.50 7.51 3.18 0.54 15.00 7.69 3.32 0.47 15.50 7.84 3.44 0.41 16.00 7.97 3.54 0.35 16.50 8.09 3.62 0.30 17.00 8.19 3.70 0.27 17.50 8.27 3.77 0.24 18.00 8.35 3.83 0.21 18.50 8.42 3.89 0.19 19.00 8.49 3.94 0.18 19.50 8.55 3.99 0.17 20.00 8.61 4.04 0.16 20.50 8.67 4.08 0.15 21.00 8.72 4.13 0.15 21.50 8.78 4.17 0.14 22.00 8.83 4.21 0.13 22.50 8.87 4.25 0.13 23.00 8.92 4.28 0.12 23.50 8.96 4.32 0.11 24.00 9.00 4.35 0.11 24.50 9.00 4.35 0.01 25.00 9.00 4.35 0.00 25.50 9.00 4.35 0.00 26.00 9.00 4.35 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 28 Summary for Subcatchment K: Drainage Area K Runoff = 3.46 cfs @ 12.26 hrs, Volume= 0.358 af, Depth= 4.72" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 2,529 98 Roofs, HSG B 0 98 Paved parking, HSG B 2,285 85 Gravel, HSG B 0 98 Water Surface, HSG B 204 98 Unconnected pavement, HSG B 34,609 61 >75% Grass cover, Good, HSG B 39,627 65 Weighted Average 36,894 93.10% Pervious Area 2,733 6.90% Impervious Area 204 7.46% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 18.9 192 0.0128 0.17 Sheet Flow, Grass: Short n= 0.150 P2= 3.50" Subcatchment K: Drainage Area K Hydrograph 3.46 CfS D Runoff Type III 24-her 3... 100 year Rainfall=9.00 Runoff Area=39,627 sof Runoff Volume=0.358 of Runoff Depth=4.72 Flow Length=192' Slope=0.0128 '/' Tc=18.9 min CN=65 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 29 Hydrograph for Subcatchment K: Drainage Area K Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 4.72 0.00 0.50 0.04 0.00 0.00 27.00 9.00 4.72 0.00 1.00 0.09 0.00 0.00 27.50 9.00 4.72 0.00 1.50 0.13 0.00 0.00 28.00 9.00 4.72 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.00 0.00 7.50 0.91 0.00 0.00 8.00 1.03 0.00 0.00 8.50 1.16 0.00 0.00 9.00 1.31 0.01 0.01 9.50 1.49 0.03 0.03 10.00 1.70 0.06 0.06 10.50 1.95 0.12 0.10 11.00 2.25 0.21 0.16 11.50 2.68 0.37 0.28 12.00 4.50 1.33 1.28 12.50 6.32 2.59 2.28 13.00 6.75 2.91 0.67 13.50 7.05 3.14 0.44 14.00 7.30 3.34 0.36 14.50 7.51 3.50 0.30 15.00 7.69 3.64 0.27 15.50 7.84 3.77 0.23 16.00 7.97 3.87 0.20 16.50 8.09 3.96 0.17 17.00 8.19 4.04 0.15 17.50 8.27 4.12 0.13 18.00 8.35 4.18 0.12 18.50 8.42 4.24 0.11 19.00 8.49 4.29 0.10 19.50 8.55 4.35 0.10 20.00 8.61 4.40 0.09 20.50 8.67 4.44 0.09 21.00 8.72 4.49 0.08 21.50 8.78 4.53 0.08 22.00 8.83 4.57 0.08 22.50 8.87 4.61 0.07 23.00 8.92 4.65 0.07 23.50 8.96 4.68 0.06 24.00 9.00 4.72 0.06 24.50 9.00 4.72 0.00 25.00 9.00 4.72 0.00 25.50 9.00 4.72 0.00 26.00 9.00 4.72 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 30 Summary for Subcatchment L: Drainage Area L Runoff = 48.55 cfs @ 12.02 hrs, Volume= 3.244 af, Depth= 8.16" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 58,167 98 Roofs, HSG B 56,064 98 Paved parking, HSG B 0 85 Gravel, HSG B 53,826 98 Water Surface, HSG B 9,872 98 Unconnected pavement, HSG B 29,966 61 >75% Grass cover, Good, HSG B 207,895 93 Weighted Average 29,966 14.41% Pervious Area 177,929 85.59% Impervious Area 9,872 5.55% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 1.5 166 0.0300 1.87 Sheet Flow, Smooth surfaces n= 0.011 P2= 3.50" Subcatchment L: Drainage Area L Hydrograph p Runoff 50 48.55 cfs - Type III 24-hr-- 45 - 100 year Rainfall=9.00 40 -- Runoff Area=207,895 sf 35 - Runoff Volume=3.244 of 30 RunoffDepth=8.16" U. 25 FlowLength=166' 20 Slope=0.03,00 15 Tc=1.5min 10 CN=93 5- P 0, Miii, M,, 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 31 Hydrograph for Subcatchment L: Drainage Area L Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 8.16 0.00 0.50 0.04 0.00 0.00 27.00 9.00 8.16 0.00 1.00 0.09 0.00 0.00 27.50 9.00 8.16 0.00 1.50 0.13 0.00 0.00 28.00 9.00 8.16 0.00 2.00 0.18 0.00 0.03 2.50 0.23 0.01 0.08 3.00 0.28 0.02 0.13 3.50 0.33 0.03 0.18 4.00 0.39 0.06 0.23 4.50 0.45 0.08 0.29 5.00 0.51 0.12 0.34 5.50 0.58 0.15 0.39 6.00 0.65 0.20 0.44 6.50 0.73 0.25 0.54 7.00 0.81 0.31 0.65 7.50 0.91 0.38 0.76 8.00 1.03 0.47 0.88 8.50 1.16 0.57 1.11 9.00 1.31 0.70 1.36 9.50 1.49 0.86 1.62 10.00 1.70 1.04 1.88 10.50 1.95 1.27 2.39 11.00 2.25 1.55 2.92 11.50 2.68 1.95 4.79 12.00 4.50 3.71 43.88 12.50 6.32 5.50 5.97 13.00 6.75 5.92 3.22 13.50 7.05 6.22 2.64 14.00 7.30 6.47 2.13 14.50 7.51 6.67 1.87 15.00 7.69 6.85 1.62 15.50 7.84 7.01 1.38 16.00 7.97 7.14 1.13 16.50 8.09 7.25 1.02 17.00 8.19 7.35 0.91 17.50 8.27 7.43 0.80 18.00 8.35 7.51 0.69 18.50 8.42 7.58 0.66 19.00 8.49 7.65 0.63 19.50 8.55 7.71 0.59 20.00 8.61 7.77 0.56 20.50 8.67 7.83 0.54 21.00 8.72 7.88 0.51 21.50 8.78 7.93 0.49 22.00 8.83 7.98 0.46 22.50 8.87 8.03 0.44 23.00 8.92 8.07 0.42 23.50 8.96 8.12 0.39 24.00 9.00 8.16 0.37 24.50 9.00 8.16 0.00 25.00 9.00 8.16 0.00 25.50 9.00 8.16 0.00 26.00 9.00 8.16 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 32 Summary for Subcatchment M: Drainage Area M Runoff = 4.84 cfs @ 12.22 hrs, Volume= 0.463 af, Depth= 5.21" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Adj Description 2,529 98 Roofs, HSG B 5,939 98 Paved parking, HSG B 1,512 85 Gravel, HSG B 0 98 Water Surface, HSG B 1,827 98 Unconnected pavement, HSG B 34,602 61 >75% Grass cover, Good, HSG B 46,409 70 69 Weighted Average, UI Adjusted 36,114 77.82% Pervious Area 10,295 22.18% Impervious Area 1,827 17.75% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.7 171 0.0161 0.18 Sheet Flow, Grass: Short n= 0.150 P2= 3.50" Subcatchment M: Drainage Area M Hydrograph 5' 4.84 CfS _ ®Runoff Type III 24-hr 100 year Rainfall=9.00"- Runoff Area=46,409 sof r Runoff Volume=0.453 of 43- Runoff Depth=5.21" LL Flow Length-171' 2,.. Slope=0.0161 Tc=15.7 min - - - UI Adjusted CN=69-- 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 33 Hydrograph for Subcatchment M: Drainage Area M Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 5.21 0.00 0.50 0.04 0.00 0.00 27.00 9.00 5.21 0.00 1.00 0.09 0.00 0.00 27.50 9.00 5.21 0.00 1.50 0.13 0.00 0.00 28.00 9.00 5.21 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.00 0.00 7.50 0.91 0.00 0.00 8.00 1.03 0.00 0.01 8.50 1.16 0.01 0.02 9.00 1.31 0.03 0.05 9.50 1.49 0.07 0.08 10.00 1.70 0.12 0.11 10.50 1.95 0.20 0.17 11.00 2.25 0.31 0.25 11.50 2.68 0.51 0.42 12.00 4.50 1.60 2.01 12.50 6.32 2.96 2.57 13.00 6.75 3.31 0.76 13.50 7.05 3.56 0.53 14.00 7.30 3.76 0.44 14.50 7.51 3.93 0.37 15.00 7.69 4.09 0.33 15.50 7.84 4.22 0.28 16.00 7.97 4.33 0.24 16.50 8.09 4.42 0.20 17.00 8.19 4.51 0.18 17.50 8.27 4.58 0.16 18.00 8.35 4.65 0.14 18.50 8.42 4.71 0.13 19.00 8.49 4.77 0.12 19.50 8.55 4.82 0.12 20.00 8.61 4.88 0.11 20.50 8.67 4.92 0.11 21.00 8.72 4.97 0.10 21.50 8.78 5.02 0.10 22.00 8.83 5.06 0.09 22.50 8.87 5.10 0.09 23.00 8.92 5.14 0.08 23.50 8.96 5.18 0.08 24.00 9.00 5.21 0.07 24.50 9.00 5.21 0.00 25.00 9.00 5.21 0.00 25.50 9.00 5.21 0.00 26.00 9.00 5.21 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 34 Summary for Subcatchment N: Drainage Area N Runoff = 8.66 cfs @ 12.34 hrs, Volume= 1.007 af, Depth= 5.09" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 16,368 98 Roofs, HSG B 0 98 Paved parking, HSG B 1,897 85 Gravel, HSG B 0 98 Water Surface, HSG B 2,716 98 Unconnected pavement, HSG B 82,468 61 >75% Grass cover, Good, HSG B 103,449 68 Weighted Average 84,365 81.55% Pervious Area 19,084 18.45% Impervious Area 2,716 14.23% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 25.3 300 0.0150 0.20 Sheet Flow, Grass: Short n= 0.150 P2= 3.50" Subcatchment N: Drainage Area N Hydrograph p Runoff 9: 8.66 cfs - - Type III 24-hr-- 100 year Rainfall=9.00" F '' Runoff Area=103,449 sf Runoff Volume=1.007 of 5: - Runoff Depth=5.09' u „ - � - -Flow Length=300' 4 -- Slope=0.0150 3 Tc=25.3 min 2: CN=68 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 35 Hydrograph for Subcatchment N: Drainage Area N Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 5.09 0.00 0.50 0.04 0.00 0.00 27.00 9.00 5.09 0.00 1.00 0.09 0.00 0.00 27.50 9.00 5.09 0.00 1.50 0.13 0.00 0.00 28.00 9.00 5.09 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.00 0.00 7.50 0.91 0.00 0.00 8.00 1.03 0.00 0.00 8.50 1.16 0.01 0.03 9.00 1.31 0.03 0.07 9.50 1.49 0.06 0.13 10.00 1.70 0.11 0.20 10.50 1.95 0.18 0.31 11.00 2.25 0.28 0.46 11.50 2.68 0.47 0.75 12.00 4.50 1.53 2.79 12.50 6.32 2.87 7.37 13.00 6.75 3.21 2.33 13.50 7.05 3.45 1.28 14.00 7.30 3.65 1.02 14.50 7.51 3.82 0.85 15.00 7.69 3.97 0.75 15.50 7.84 4.10 0.65 16.00 7.97 4.21 0.55 16.50 8.09 4.31 0.47 17.00 8.19 4.39 0.42 17.50 8.27 4.47 0.37 18.00 8.35 4.53 0.33 18.50 8.42 4.59 0.29 19.00 8.49 4.65 0.28 19.50 8.55 4.70 0.26 20.00 8.61 4.76 0.25 20.50 8.67 4.80 0.24 21.00 8.72 4.85 0.23 21.50 8.78 4.90 0.22 22.00 8.83 4.94 0.21 22.50 8.87 4.98 0.20 23.00 8.92 5.02 0.19 23.50 8.96 5.05 0.18 24.00 9.00 5.09 0.17 24.50 9.00 5.09 0.04 25.00 9.00 5.09 0.00 25.50 9.00 5.09 0.00 26.00 9.00 5.09 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 36 Summary for Subcatchment O: Drainage Area O Runoff = 3.35 cfs @ 12.35 hrs, Volume= 0.439 af, Depth= 8.28" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 3,094 98 Roofs, HSG B 18,956 98 Paved parking, HSG B 857 85 Gravel, HSG B 0 98 Water Surface, HSG B 2,080 98 Unconnected pavement, HSG B 2,716 61 >75% Grass cover, Good, HSG B 27,703 94 Weighted Average 3,573 12.90% Pervious Area 24,130 87.10% Impervious Area 2,080 8.62% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 26.6 184 0.0050 0.12 Sheet Flow, Grass: Short n= 0.150 P2= 3.50" Subcatchment O: Drainage Area O Hydrograph 3.35 CfS D Runoff Type III 24-hr 3 100 year Rainfall=9.00"Runoff Area=27,703 sf Runoff Volume=0.439 of 2.. Runoff Depth=8.28" Flow Length=184' Slope=0.0050 Tc=26.6 min CN=94 o. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 37 Hydrograph for Subcatchment O: Drainage Area O Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 8.28 0.00 0.50 0.04 0.00 0.00 27.00 9.00 8.28 0.00 1.00 0.09 0.00 0.00 27.50 9.00 8.28 0.00 1.50 0.13 0.00 0.00 28.00 9.00 8.28 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.01 0.01 3.00 0.28 0.03 0.02 3.50 0.33 0.05 0.02 4.00 0.39 0.07 0.03 4.50 0.45 0.11 0.04 5.00 0.51 0.14 0.05 5.50 0.58 0.19 0.05 6.00 0.65 0.23 0.06 6.50 0.73 0.29 0.07 7.00 0.81 0.36 0.08 7.50 0.91 0.43 0.10 8.00 1.03 0.53 0.11 8.50 1.16 0.63 0.13 9.00 1.31 0.77 0.16 9.50 1.49 0.93 0.20 10.00 1.70 1.12 0.23 10.50 1.95 1.35 0.27 11.00 2.25 1.63 0.34 11.50 2.68 2.04 0.46 12.00 4.50 3.82 1.31 12.50 6.32 5.61 2.84 13.00 6.75 6.04 0.85 13.50 7.05 6.34 0.43 14.00 7.30 6.59 0.34 14.50 7.51 6.79 0.28 15.00 7.69 6.97 0.24 15.50 7.84 7.13 0.21 16.00 7.97 7.26 0.18 16.50 8.09 7.37 0.15 17.00 8.19 7.47 0.13 17.50 8.27 7.55 0.12 18.00 8.35 7.63 0.10 18.50 8.42 7.70 0.09 19.00 8.49 7.77 0.09 19.50 8.55 7.83 0.08 20.00 8.61 7.89 0.08 20.50 8.67 7.95 0.07 21.00 8.72 8.00 0.07 21.50 8.78 8.06 0.07 22.00 8.83 8.10 0.06 22.50 8.87 8.15 0.06 23.00 8.92 8.20 0.06 23.50 8.96 8.24 0.05 24.00 9.00 8.28 0.05 24.50 9.00 8.28 0.01 25.00 9.00 8.28 0.00 25.50 9.00 8.28 0.00 26.00 9.00 8.28 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 38 Summary for Subcatchment P: Drainage Area P Runoff = 4.52 cfs @ 12.22 hrs, Volume= 0.430 af, Depth= 4.35" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 0 98 Roofs, HSG B 0 98 Paved parking, HSG B 0 85 Gravel, HSG B 0 98 Water Surface, HSG B 1,801 98 Unconnected pavement, HSG B 49,894 61 >75% Grass cover, Good, HSG B 51,695 62 Weighted Average 49,894 96.52% Pervious Area 1,801 3.48% Impervious Area 1,801 100.00% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.3 144 0.0122 0.16 Sheet Flow, Grass: Short n= 0.150 P2= 3.50" Subcatchment P: Drainage Area P Hydrograph 5 ®Runoff 4.52 cfs Type III 24-her 100 year Rainfall=9.00'' Runoff Area=51,695 sf 3 �0, Runoff Volume=0.430 afi Runoff Depth=4.35" Flow Length=144' Slope=0.0122 '/' Tc=15.3 min 1 CN=62 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 39 Hydrograph for Subcatchment P: Drainage Area P Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 4.35 0.00 0.50 0.04 0.00 0.00 27.00 9.00 4.35 0.00 1.00 0.09 0.00 0.00 27.50 9.00 4.35 0.00 1.50 0.13 0.00 0.00 28.00 9.00 4.35 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.00 0.00 7.50 0.91 0.00 0.00 8.00 1.03 0.00 0.00 8.50 1.16 0.00 0.00 9.00 1.31 0.00 0.00 9.50 1.49 0.01 0.02 10.00 1.70 0.03 0.06 10.50 1.95 0.08 0.10 11.00 2.25 0.15 0.17 11.50 2.68 0.28 0.32 12.00 4.50 1.14 1.76 12.50 6.32 2.31 2.44 13.00 6.75 2.62 0.75 13.50 7.05 2.84 0.53 14.00 7.30 3.02 0.44 14.50 7.51 3.18 0.37 15.00 7.69 3.32 0.33 15.50 7.84 3.44 0.28 16.00 7.97 3.54 0.24 16.50 8.09 3.62 0.21 17.00 8.19 3.70 0.19 17.50 8.27 3.77 0.17 18.00 8.35 3.83 0.15 18.50 8.42 3.89 0.13 19.00 8.49 3.94 0.13 19.50 8.55 3.99 0.12 20.00 8.61 4.04 0.11 20.50 8.67 4.08 0.11 21.00 8.72 4.13 0.10 21.50 8.78 4.17 0.10 22.00 8.83 4.21 0.09 22.50 8.87 4.25 0.09 23.00 8.92 4.28 0.09 23.50 8.96 4.32 0.08 24.00 9.00 4.35 0.08 24.50 9.00 4.35 0.00 25.00 9.00 4.35 0.00 25.50 9.00 4.35 0.00 26.00 9.00 4.35 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 40 Summary for Subcatchment Q: Drainage Area Q Runoff = 10.32 cfs @ 12.25 hrs, Volume= 1.064 af, Depth= 5.46" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Adj Description 23,464 98 Roofs, HSG B 0 98 Paved parking, HSG B 2,510 85 Gravel, HSG B 0 98 Water Surface, HSG B 4,503 98 Unconnected pavement, HSG B 71,370 61 >75% Grass cover, Good, HSG B 101,847 72 71 Weighted Average, UI Adjusted 73,880 72.54% Pervious Area 27,967 27.46% Impervious Area 4,503 16.10% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 18.9 215 0.0160 0.19 Sheet Flow, Grass: Short n= 0.150 P2= 3.50" Subcatchment Q: Drainage Area Q Hydrograph 11: 10.32 cfs 10�� - - - Type; III 24-hr 9 100 year Rainfall=9.00 - 1 / Ru - no Area=101,847 sf ffi RunoVolume=1.064 of- Runoff Depth=5.46" FlowLength=215' - 4.�� - - - - - Slope=0.0160 .�. - Tc=18.9 min 2 - - Ul Adjusted CN=71-- 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 41 Hydrograph for Subcatchment Q: Drainage Area Q Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 5.46 0.00 0.50 0.04 0.00 0.00 27.00 9.00 5.46 0.00 1.00 0.09 0.00 0.00 27.50 9.00 5.46 0.00 1.50 0.13 0.00 0.00 28.00 9.00 5.46 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.00 0.00 7.50 0.91 0.00 0.01 8.00 1.03 0.01 0.03 8.50 1.16 0.03 0.07 9.00 1.31 0.05 0.12 9.50 1.49 0.10 0.19 10.00 1.70 0.16 0.28 10.50 1.95 0.25 0.40 11.00 2.25 0.37 0.58 11.50 2.68 0.58 0.95 12.00 4.50 1.75 4.05 12.50 6.32 3.16 6.59 13.00 6.75 3.51 1.89 13.50 7.05 3.77 1.22 14.00 7.30 3.98 1.01 14.50 7.51 4.15 0.85 15.00 7.69 4.31 0.74 15.50 7.84 4.44 0.64 16.00 7.97 4.56 0.54 16.50 8.09 4.65 0.46 17.00 8.19 4.74 0.42 17.50 8.27 4.82 0.37 18.00 8.35 4.89 0.32 18.50 8.42 4.95 0.29 19.00 8.49 5.01 0.28 19.50 8.55 5.06 0.26 20.00 8.61 5.12 0.25 20.50 8.67 5.17 0.24 21.00 8.72 5.21 0.23 21.50 8.78 5.26 0.22 22.00 8.83 5.30 0.21 22.50 8.87 5.35 0.20 23.00 8.92 5.39 0.19 23.50 8.96 5.42 0.18 24.00 9.00 5.46 0.17 24.50 9.00 5.46 0.01 25.00 9.00 5.46 0.00 25.50 9.00 5.46 0.00 26.00 9.00 5.46 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 42 Summary for Subcatchment R: Drainage Area R Runoff = 8.10 cfs @ 12.43 hrs, Volume= 1.036 af, Depth= 5.09" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 17,958 98 Roofs, HSG B 0 98 Paved parking, HSG B 3,143 85 Gravel, HSG B 0 98 Water Surface, HSG B 0 98 Unconnected pavement, HSG B 85,352 61 >75% Grass cover, Good, HSG B 106,453 68 Weighted Average 88,495 83.13% Pervious Area 17,958 16.87% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 31.1 300 0.0090 0.16 Sheet Flow, Grass: Short n= 0.150 P2= 3.50" Subcatchment R: Drainage Area R Hydrograph 9 8.10 CfS D Runoff Type III 24-hr - -- 100 year Rainfall�=9.00"-- � ' Runoff Area=106,453 sf- Runoff Volume=1.036 of 5-Runoff Depth=5.09" Flow Length=300' LL 4. 3� Slope=0.0090 - _ Tc=31.1-min z: - CN=68 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 43 Hydrograph for Subcatchment R: Drainage Area R Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 5.09 0.00 0.50 0.04 0.00 0.00 27.00 9.00 5.09 0.00 1.00 0.09 0.00 0.00 27.50 9.00 5.09 0.00 1.50 0.13 0.00 0.00 28.00 9.00 5.09 0.00 2.00 0.18 0.00 0.00 2.50 0.23 0.00 0.00 3.00 0.28 0.00 0.00 3.50 0.33 0.00 0.00 4.00 0.39 0.00 0.00 4.50 0.45 0.00 0.00 5.00 0.51 0.00 0.00 5.50 0.58 0.00 0.00 6.00 0.65 0.00 0.00 6.50 0.73 0.00 0.00 7.00 0.81 0.00 0.00 7.50 0.91 0.00 0.00 8.00 1.03 0.00 0.00 8.50 1.16 0.01 0.02 9.00 1.31 0.03 0.06 9.50 1.49 0.06 0.12 10.00 1.70 0.11 0.20 10.50 1.95 0.18 0.29 11.00 2.25 0.28 0.45 11.50 2.68 0.47 0.70 12.00 4.50 1.53 2.25 12.50 6.32 2.87 7.88 13.00 6.75 3.21 2.99 13.50 7.05 3.45 1.47 14.00 7.30 3.65 1.10 14.50 7.51 3.82 0.90 15.00 7.69 3.97 0.79 15.50 7.84 4.10 0.69 16.00 7.97 4.21 0.58 16.50 8.09 4.31 0.49 17.00 8.19 4.39 0.44 17.50 8.27 4.47 0.39 18.00 8.35 4.53 0.35 18.50 8.42 4.59 0.31 19.00 8.49 4.65 0.29 19.50 8.55 4.70 0.27 20.00 8.61 4.76 0.26 20.50 8.67 4.80 0.25 21.00 8.72 4.85 0.24 21.50 8.78 4.90 0.23 22.00 8.83 4.94 0.22 22.50 8.87 4.98 0.20 23.00 8.92 5.02 0.19 23.50 8.96 5.05 0.18 24.00 9.00 5.09 0.17 24.50 9.00 5.09 0.06 25.00 9.00 5.09 0.01 25.50 9.00 5.09 0.00 26.00 9.00 5.09 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 44 Summary for Subcatchment S: Drainage Area S Runoff = 39.72 cfs @ 12.37 hrs, Volume= 5.276 af, Depth= 8.28" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=9.00" Area (sf) CN Description 145,500 98 Roofs, HSG B 75,507 98 Paved parking, HSG B 557 85 Gravel, HSG B 52,954 98 Water Surface, HSG B 18,639 98 Unconnected pavement, HSG B 40,040 61 >75% Grass cover, Good, HSG B 333,197 94 Weighted Average 40,597 12.18% Pervious Area 292,600 87.82% Impervious Area 18,639 6.37% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 27.5 90 0.0011 0.05 Sheet Flow, Grass: Short n= 0.150 P2= 3.50" Subcatchment S: Drainage Area S Hydrograph 44 ' ®Runoff 42 39.72 cfs 40 Type III 24-hr 38 ' i. 100 year Rainfall=9:00" 36 34. .� '% 32 ', Runoff Area=333,197 sf 28.' !�., - � � Runoff bolume=5.276 of 26-:: - 24, Runoff Depth=8.28" 3 22 % 20 -Flow Length=90' 16� Slope=0.0011 14, 12 TC=27.5 min 10 8 CN=94 : 6. 4, 2 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 45 Hydrograph for Subcatchment S: Drainage Area S Time Precip. Excess Runoff Time Precip. Excess Runoff (hours) (inches) (inches) (cfs) (hours) (inches) (inches) (cfs) 0.00 0.00 0.00 0.00 26.50 9.00 8.28 0.00 0.50 0.04 0.00 0.00 27.00 9.00 8.28 0.00 1.00 0.09 0.00 0.00 27.50 9.00 8.28 0.00 1.50 0.13 0.00 0.00 28.00 9.00 8.28 0.00 2.00 0.18 0.00 0.03 2.50 0.23 0.01 0.11 3.00 0.28 0.03 0.20 3.50 0.33 0.05 0.29 4.00 0.39 0.07 0.37 4.50 0.45 0.11 0.46 5.00 0.51 0.14 0.54 5.50 0.58 0.19 0.63 6.00 0.65 0.23 0.71 6.50 0.73 0.29 0.81 7.00 0.81 0.36 0.97 7.50 0.91 0.43 1.15 8.00 1.03 0.53 1.33 8.50 1.16 0.63 1.57 9.00 1.31 0.77 1.94 9.50 1.49 0.93 2.35 10.00 1.70 1.12 2.76 10.50 1.95 1.35 3.28 11.00 2.25 1.63 4.08 11.50 2.68 2.04 5.49 12.00 4.50 3.82 15.22 12.50 6.32 5.61 34.69 13.00 6.75 6.04 10.60 13.50 7.05 6.34 5.31 14.00 7.30 6.59 4.09 14.50 7.51 6.79 3.36 15.00 7.69 6.97 2.93 15.50 7.84 7.13 2.53 16.00 7.97 7.26 2.13 16.50 8.09 7.37 1.79 17.00 8.19 7.47 1.60 17.50 8.27 7.55 1.42 18.00 8.35 7.63 1.25 18.50 8.42 7.70 1.11 19.00 8.49 7.77 1.05 19.50 8.55 7.83 0.99 20.00 8.61 7.89 0.94 20.50 8.67 7.95 0.89 21.00 8.72 8.00 0.85 21.50 8.78 8.06 0.81 22.00 8.83 8.10 0.78 22.50 8.87 8.15 0.74 23.00 8.92 8.20 0.70 23.50 8.96 8.24 0.66 24.00 9.00 8.28 0.62 24.50 9.00 8.28 0.17 25.00 9.00 8.28 0.01 25.50 9.00 8.28 0.00 26.00 9.00 8.28 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 46 Summary for Pond A-1: Drainage System A Inflow Area = 2.903 ac, 29.43% Impervious, Inflow Depth = 5.58" for 100 year event Inflow = 12.29 cfs @ 12.30 hrs, Volume= 1.350 of Outflow = 12.28 cfs @ 12.30 hrs, Volume= 1.350 af, Atten= 0%, Lag= 0.0 min Discarded = 0.62 cfs @ 10.80 hrs, Volume= 0.818 of Primary = 11.66 cfs @ 12.30 hrs, Volume= 0.532 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs/2 Peak Elev= 29.14' @ 12.30 hrs Surf.Area= 1,109 sf Storage= 11,241 cf Plug-Flow detention time= 115.2 min calculated for 1.350 of(100% of inflow) Center-of-Mass det. time= 115.1 min ( 945.7 - 830.6 ) Volume Invert Avail.Storage Storage Description #1 19.00' 12,199 cf 11.33'D x 11.00'H DW-D1 x l l Device Routing Invert Outlet Devices #1 Discarded 19.00' 24.000 in/hr Exfiltration DW-D1 over Surface area Phase-In= 0.01' #2 Primary 29.00' 24.0" Horiz. Orifice/Grate X 11.00 C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.62 cfs @ 10.80 hrs HW=19.11' (Free Discharge) L1=Exfiltration DW-D1 (Exfiltration Controls 0.62 cfs) Primary OutFlow Max=11.34 cfs @ 12.30 hrs HW=29.14' (Free Discharge) t2=Orifice/Grate (Weir Controls 11.34 cfs @ 1.21 fps) Pond A-1: Drainage System A Hydrograph ' 17 2Q rfs 03 Inflow I Outflow 12.28 CTS Inflow_Area-2.903 ac p Pr marded y 11.66 cfs Peak Elev=29.14' . 13, 12', 11 - Storage=11,_241 cf 9 �' N 8 i 7i 3 o 6. LL i 5. , 4 3- 2_' 2 ' 0.62 , 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 47 Hydrograph for Pond A-1: Drainage System A Time Inflow Storage Elevation Outflow Discarded Primary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 0.00 0.00 0 19.00 0.00 0.00 0.00 1.00 0.00 0 19.00 0.00 0.00 0.00 2.00 0.00 0 19.00 0.00 0.00 0.00 3.00 0.00 0 19.00 0.00 0.00 0.00 4.00 0.00 0 19.00 0.00 0.00 0.00 5.00 0.00 0 19.00 0.00 0.00 0.00 6.00 0.00 0 19.00 0.00 0.00 0.00 7.00 0.00 0 19.00 0.00 0.00 0.00 8.00 0.05 10 19.01 0.05 0.05 0.00 9.00 0.17 31 19.03 0.16 0.16 0.00 10.00 0.36 70 19.06 0.35 0.35 0.00 11.00 0.74 174 19.16 0.62 0.62 0.00 12.00 4.50 3,510 22.16 0.62 0.62 0.00 13.00 2.67 11,126 29.03 2.69 0.62 2.07 14.00 1.29 11,107 29.02 1.29 0.62 0.67 15.00 0.95 11,103 29.01 0.95 0.62 0.33 16.00 0.69 11,094 29.00 0.69 0.62 0.08 17.00 0.53 10,970 28.89 0.62 0.62 0.00 18.00 0.41 10,442 28.42 0.62 0.62 0.00 19.00 0.35 9,569 27.63 0.62 0.62 0.00 20.00 0.32 8,552 26.71 0.62 0.62 0.00 21.00 0.29 7,419 25.69 0.62 0.62 0.00 22.00 0.26 6,190 24.58 0.62 0.62 0.00 23.00 0.24 4,869 23.39 0.62 0.62 0.00 24.00 0.21 3,453 22.11 0.62 0.62 0.00 25.00 0.00 1,489 20.34 0.62 0.62 0.00 26.00 0.00 0 19.00 0.00 0.00 0.00 27.00 0.00 0 19.00 0.00 0.00 0.00 28.00 0.00 0 19.00 0.00 0.00 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 48 Summary for Pond B-1: Drainage System B Inflow Area = 1.409 ac, 24.81% Impervious, Inflow Depth = 5.33" for 100 year event Inflow = 7.60 cfs @ 12.14 hrs, Volume= 0.626 of Outflow = 7.59 cfs @ 12.15 hrs, Volume= 0.545 af, Atten= 0%, Lag= 0.1 min Discarded = 0.09 cfs @ 9.38 hrs, Volume= 0.149 of Primary = 7.50 cfs @ 12.15 hrs, Volume= 0.395 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs/2 Peak Elev= 31.80' @ 12.15 hrs Surf.Area=403 sf Storage=4,920 cf Plug-Flow detention time= 125.8 min calculated for 0.545 of(87% of inflow) Center-of-Mass det. time= 67.1 min ( 890.9 - 823.8 ) Volume Invert Avail.Storage Storage Description #1 19.60' 5,243 cf 11.33'D x 13.00'H DW-D1 x 4 Device Routing Invert Outlet Devices #1 Discarded 19.60' 10.000 in/hr Exfiltration DW-D1 over Surface area Phase-In= 0.01' #2 Primary 31.60' 24.0" Horiz. Orifice/Grate X 4.00 C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.09 cfs @ 9.38 hrs HW=19.73' (Free Discharge) L1=Exfiltration DW-D1 (Exfiltration Controls 0.09 cfs) Primary OutFlow Max=7.32 cfs @ 12.15 hrs HW=31.80' (Free Discharge) t2=Orifice/Grate (Weir Controls 7.32 cfs @ 1.46 fps) Pond B-1: Drainage System B Hydrograph 7 Rn rfg Inflow II'�Outflow 7.59 cfs Inflow Area=1 .409 ac__ o Discarded 8 7.50 cfs Peak Elev=31 .80' 7 Storage=4,920 cf 6- 5 r; w i 0 4 u. - - 3 2.::' A 11 1101 1111 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 49 Hydrograph for Pond B-1: Drainage System B Time Inflow Storage Elevation Outflow Discarded Primary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 0.00 0.00 0 19.60 0.00 0.00 0.00 1.00 0.00 0 19.60 0.00 0.00 0.00 2.00 0.00 0 19.60 0.00 0.00 0.00 3.00 0.00 0 19.60 0.00 0.00 0.00 4.00 0.00 0 19.60 0.00 0.00 0.00 5.00 0.00 0 19.60 0.00 0.00 0.00 6.00 0.00 0 19.60 0.00 0.00 0.00 7.00 0.00 0 19.60 0.00 0.00 0.00 8.00 0.02 8 19.62 0.01 0.01 0.00 9.00 0.07 36 19.69 0.06 0.06 0.00 10.00 0.17 151 19.97 0.09 0.09 0.00 11.00 0.36 737 21.43 0.09 0.09 0.00 12.00 3.61 4,145 29.88 0.09 0.09 0.00 13.00 0.92 4,853 31.63 0.92 0.09 0.83 14.00 0.57 4,847 31.62 0.57 0.09 0.47 15.00 0.43 4,845 31.61 0.43 0.09 0.33 16.00 0.31 4,843 31.61 0.31 0.09 0.21 17.00 0.24 4,842 31.61 0.24 0.09 0.15 18.00 0.19 4,841 31.60 0.19 0.09 0.09 19.00 0.16 4,841 31.60 0.16 0.09 0.07 20.00 0.15 4,840 31.60 0.15 0.09 0.05 21.00 0.13 4,840 31.60 0.13 0.09 0.04 22.00 0.12 4,840 31.60 0.12 0.09 0.03 23.00 0.11 4,840 31.60 0.11 0.09 0.02 24.00 0.10 4,839 31.60 0.10 0.09 0.00 25.00 0.00 4,559 30.90 0.09 0.09 0.00 26.00 0.00 4,223 30.07 0.09 0.09 0.00 27.00 0.00 3,887 29.24 0.09 0.09 0.00 28.00 0.00 3,551 28.40 0.09 0.09 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 50 Summary for Pond C-1: Drainage System C Inflow Area = 4.521 ac, 39.08% Impervious, Inflow Depth = 5.95" for 100 year event Inflow = 18.92 cfs @ 12.34 hrs, Volume= 2.242 of Outflow = 18.91 cfs @ 12.35 hrs, Volume= 2.244 af, Atten= 0%, Lag= 0.3 min Discarded = 0.90 cfs @ 10.53 hrs, Volume= 1.328 of Primary = 18.01 cfs @ 12.35 hrs, Volume= 0.916 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs/2 Peak Elev= 28.89' @ 12.35 hrs Surf.Area= 1,613 sf Storage= 19,579 cf Plug-Flow detention time= 134.8 min calculated for 2.242 of(100% of inflow) Center-of-Mass det. time= 135.4 min ( 963.3 - 828.0 ) Volume Invert Avail.Storage Storage Description #1 16.75' 20,971 cf 11.33'D x 13.00'H DW-D1 x 16 Device Routing Invert Outlet Devices #1 Discarded 16.75' 24.000 in/hr Exfiltration DW-D1 over Surface area Phase-In= 0.01' #2 Primary 28.75' 24.0" Horiz. Orifice/Grate X 16.00 C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.90 cfs @ 10.53 hrs HW=16.88' (Free Discharge) L1=Exfiltration DW-D1 (Exfiltration Controls 0.90 cfs) Primary OutFlow Max=16.75 cfs @ 12.35 hrs HW=28.89' (Free Discharge) t2=Orifice/Grate (Weir Controls 16.75 cfs @ 1.21 fps) Pond C-1: Drainage System C Hydrograph ' 1 R q? rf 03 Inflow S Outflow 18.91 cfs `j' r� rr�� Discarded 21:' InfloW Area-4.82 1 ac ®Primary 20` 191' 18.0 cfs Peak Eley=28.89' 117 8 Storage-19,579 cf 16: 15' - - 14,.. 13 , 12 11 - 3 10 ' E 9. 8 7, 6 - - 3:: 0.90 c 2 i 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 51 Hydrograph for Pond C-1: Drainage System C Time Inflow Storage Elevation Outflow Discarded Primary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 0.00 0.00 0 16.75 0.00 0.00 0.00 1.00 0.00 0 16.75 0.00 0.00 0.00 2.00 0.00 0 16.75 0.00 0.00 0.00 3.00 0.00 0 16.75 0.00 0.00 0.00 4.00 0.00 0 16.75 0.00 0.00 0.00 5.00 0.00 0 16.75 0.00 0.00 0.00 6.00 0.00 0 16.75 0.00 0.00 0.00 7.00 0.04 7 16.75 0.03 0.03 0.00 8.00 0.14 31 16.77 0.13 0.13 0.00 9.00 0.34 76 16.80 0.32 0.32 0.00 10.00 0.67 152 16.84 0.65 0.65 0.00 11.00 1.28 558 17.10 0.90 0.90 0.00 12.00 6.49 6,076 20.52 0.90 0.90 0.00 13.00 5.04 19,426 28.79 5.09 0.90 4.19 14.00 2.13 19,378 28.76 2.13 0.90 1.24 15.00 1.55 19,368 28.76 1.55 0.90 0.65 16.00 1.13 19,361 28.75 1.13 0.90 0.24 17.00 0.85 19,340 28.74 0.90 0.90 0.00 18.00 0.67 18,858 28.44 0.90 0.90 0.00 19.00 0.56 17,806 27.79 0.90 0.90 0.00 20.00 0.51 16,510 26.98 0.90 0.90 0.00 21.00 0.46 15,027 26.07 0.90 0.90 0.00 22.00 0.42 13,389 25.05 0.90 0.90 0.00 23.00 0.38 11,602 23.94 0.90 0.90 0.00 24.00 0.34 9,665 22.74 0.90 0.90 0.00 25.00 0.00 6,915 21.04 0.90 0.90 0.00 26.00 0.00 3,691 19.04 0.90 0.90 0.00 27.00 0.00 464 17.04 0.90 0.90 0.00 28.00 0.00 0 16.75 0.00 0.00 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 52 Summary for Pond D-1: Drainage System D Inflow Area = 4.426 ac, 37.98% Impervious, Inflow Depth = 5.95" for 100 year event Inflow = 19.93 cfs @ 12.30 hrs, Volume= 2.195 of Outflow = 10.80 cfs @ 12.62 hrs, Volume= 2.195 af, Atten= 46%, Lag= 19.5 min Discarded = 10.80 cfs @ 12.62 hrs, Volume= 2.195 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Peak Elev= 28.82' @ 12.62 hrs Surf.Area= 19,440 sf Storage= 13,454 cf Plug-Flow detention time= 7.1 min calculated for 2.195 of(100% of inflow) Center-of-Mass det. time= 7.1 min ( 831.4 - 824.3 ) Volume Invert Avail.Storage Storage Description #1 28.00' 76,212 cf Custom Stage Data (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 28.00 13,377 489.5 0 0 13,377 29.00 20,874 624.6 16,987 16,987 25,368 30.00 30,463 774.0 25,518 42,505 42,010 31.00 37,059 879.0 33,707 76,212 55,847 Device Routing Invert Outlet Devices #1 Discarded 28.00' 24.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=10.80 cfs @ 12.62 hrs HW=28.82' (Free Discharge) L1=Exfiltration (Exfiltration Controls 10.80 cfs) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 53 Pond D-1: Drainage System D Hydrograph - FEI Inflow 22 19.93 cfs ®Discarded 21 20.'' Inflow Area=4.426 ac 18 � Peak Elev=28. 2' 17' 15 Storage=13,454 cf 14" N 13. 12 - 10.80 cfs 11' 0 10 U. 9 8:, 7 , 6:, 5,, 4 3 2' 1 ' 0... 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 54 Hydrograph for Pond D-1: Drainage System D Time Inflow Storage Elevation Discarded (hours) (cfs) (cubic-feet) (feet) (cfs) 0.00 0.00 0 28.00 0.00 1.00 0.00 0 28.00 0.00 2.00 0.00 0 28.00 0.00 3.00 0.00 0 28.00 0.00 4.00 0.00 0 28.00 0.00 5.00 0.00 0 28.00 0.00 6.00 0.00 0 28.00 0.00 7.00 0.04 2 28.00 0.04 8.00 0.15 8 28.00 0.15 9.00 0.35 19 28.00 0.35 10.00 0.68 36 28.00 0.68 11.00 1.30 69 28.01 1.29 12.00 7.53 383 28.03 7.14 13.00 4.21 8,506 28.56 9.63 14.00 2.03 109 28.01 2.04 15.00 1.49 80 28.01 1.49 16.00 1.08 58 28.00 1.09 17.00 0.82 44 28.00 0.83 18.00 0.65 35 28.00 0.65 19.00 0.55 29 28.00 0.55 20.00 0.49 27 28.00 0.50 21.00 0.45 24 28.00 0.45 22.00 0.41 22 28.00 0.41 23.00 0.37 20 28.00 0.37 24.00 0.33 18 28.00 0.33 25.00 0.00 0 28.00 0.00 26.00 0.00 0 28.00 0.00 27.00 0.00 0 28.00 0.00 28.00 0.00 0 28.00 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 55 Summary for Pond E-1: Drainage System E Inflow Area = 4.055 ac, 29.15% Impervious, Inflow Depth = 5.58" for 100 year event Inflow = 23.00 cfs @ 12.14 hrs, Volume= 1.886 of Outflow = 7.22 cfs @ 12.52 hrs, Volume= 1.886 af, Atten= 69%, Lag= 22.9 min Discarded = 7.22 cfs @ 12.52 hrs, Volume= 1.886 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Peak Elev= 25.71' @ 12.52 hrs Surf.Area= 13,003 sf Storage= 18,329 cf Plug-Flow detention time= 15.8 min calculated for 1.886 of(100% of inflow) Center-of-Mass det. time= 15.8 min ( 835.3 - 819.5 ) Volume Invert Avail.Storage Storage Description #1 24.00' 74,189 cf Custom Stage Data (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 24.00 8,142 417.0 0 0 8,142 25.00 11,387 466.0 9,719 9,719 11,613 26.00 13,706 506.0 12,529 22,248 14,745 27.00 16,098 544.0 14,886 37,134 17,963 28.00 18,537 577.0 17,303 54,437 20,960 29.00 20,992 620.0 19,752 74,189 25,100 Device Routing Invert Outlet Devices #1 Discarded 24.00' 24.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=7.22 cfs @ 12.52 hrs HW=25.71' (Free Discharge) L1=Exfiltration (Exfiltration Controls 7.22 cfs) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 56 Pond E-1: Drainage System E Hydrograph Inflow 23. M Discarded 24, - - - Inflow Area=4.055 ac 22 Peak Elev=25.71' 20... 18: Storage=18,329 cf 16!! _ . «� 14 v 6 12, LL 10 $ . " 7.22 cfs 6- 4 , 2 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 57 Hydrograph for Pond E-1: Drainage System E Time Inflow Storage Elevation Discarded (hours) (cfs) (cubic-feet) (feet) (cfs) 0.00 0.00 0 24.00 0.00 1.00 0.00 0 24.00 0.00 2.00 0.00 0 24.00 0.00 3.00 0.00 0 24.00 0.00 4.00 0.00 0 24.00 0.00 5.00 0.00 0 24.00 0.00 6.00 0.00 0 24.00 0.00 7.00 0.00 0 24.00 0.00 8.00 0.09 8 24.00 0.09 9.00 0.27 24 24.00 0.27 10.00 0.57 50 24.01 0.56 11.00 1.16 101 24.01 1.14 12.00 11.13 2,607 24.30 5.04 13.00 2.71 13,087 25.29 6.68 14.00 1.67 234 24.03 2.62 15.00 1.26 113 24.01 1.27 16.00 0.90 81 24.01 0.91 17.00 0.71 63 24.01 0.71 18.00 0.55 49 24.01 0.55 19.00 0.48 43 24.01 0.48 20.00 0.43 39 24.00 0.43 21.00 0.40 35 24.00 0.40 22.00 0.36 32 24.00 0.36 23.00 0.32 29 24.00 0.32 24.00 0.29 26 24.00 0.29 25.00 0.00 0 24.00 0.00 26.00 0.00 0 24.00 0.00 27.00 0.00 0 24.00 0.00 28.00 0.00 0 24.00 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 58 Summary for Pond F-1: Drainage System F [88] Warning: Qout>Qin may require smaller dt or Finer Routing Inflow Area = 0.269 ac, 57.45% Impervious, Inflow Depth = 6.81" for 100 year event Inflow = 2.47 cfs @ 12.02 hrs, Volume= 0.153 of Outflow = 2.60 cfs @ 12.03 hrs, Volume= 0.152 af, Atten= 0%, Lag= 1.0 min Discarded = 0.11 cfs @ 10.85 hrs, Volume= 0.114 of Primary = 2.49 cfs @ 12.03 hrs, Volume= 0.038 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs/ 3 Peak Elev= 21.04' @ 12.03 hrs Surf.Area= 202 sf Storage= 1,440 cf Plug-Flow detention time= 81.6 min calculated for 0.152 of(100% of inflow) Center-of-Mass det. time= 80.9 min ( 870.4 - 789.5 ) Volume Invert Avail.Storage Storage Description #1 13.90' 1,613 cf 11.33'D x 8.00'H DW-D1 x 2 Device Routing Invert Outlet Devices #1 Discarded 13.90' 24.000 in/hr Exfiltration DW-D1 over Surface area Phase-In= 0.01' #2 Primary 20.90' 24.0" Horiz. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.11 cfs @ 10.85 hrs HW=13.98' (Free Discharge) L1=Exfiltration DW-D1 (Exfiltration Controls 0.11 cfs) Primary OutFlow Max=2.16 cfs @ 12.03 hrs HW=21.04' (Free Discharge) t2=Orifice/Grate (Weir Controls 2.16 cfs @ 1.22 fps) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 59 Pond F-1: Drainage System F Hydrograph Inflow 2.60 cfs 3 m outflow Inflow Area=0.269 ac °iscarded O Primary 2.49 cfs Peak Elev—=21 .04' Storage=1,440 cf i 0.11 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 60 Hydrograph for Pond F-1: Drainage System F Time Inflow Storage Elevation Outflow Discarded Primary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 0.00 0.00 0 13.90 0.00 0.00 0.00 1.00 0.00 0 13.90 0.00 0.00 0.00 2.00 0.00 0 13.90 0.00 0.00 0.00 3.00 0.00 0 13.90 0.00 0.00 0.00 4.00 0.00 0 13.90 0.00 0.00 0.00 5.00 0.00 0 13.90 0.00 0.00 0.00 6.00 0.01 1 13.90 0.01 0.01 0.00 7.00 0.01 2 13.91 0.01 0.01 0.00 8.00 0.02 3 13.92 0.02 0.02 0.00 9.00 0.04 6 13.93 0.04 0.04 0.00 10.00 0.07 10 13.95 0.07 0.07 0.00 11.00 0.12 20 14.00 0.11 0.11 0.00 12.00 2.27 1,238 20.04 0.11 0.11 0.00 13.00 0.17 1,413 20.91 0.17 0.11 0.06 14.00 0.11 1,412 20.90 0.11 0.11 0.00 15.00 0.09 1,368 20.68 0.11 0.11 0.00 16.00 0.06 1,231 20.00 0.11 0.11 0.00 17.00 0.05 1,024 18.98 0.11 0.11 0.00 18.00 0.04 776 17.75 0.11 0.11 0.00 19.00 0.03 501 16.38 0.11 0.11 0.00 20.00 0.03 213 14.96 0.11 0.11 0.00 21.00 0.03 4 13.92 0.03 0.03 0.00 22.00 0.03 4 13.92 0.03 0.03 0.00 23.00 0.02 3 13.92 0.02 0.02 0.00 24.00 0.02 3 13.91 0.02 0.02 0.00 25.00 0.00 0 13.90 0.00 0.00 0.00 26.00 0.00 0 13.90 0.00 0.00 0.00 27.00 0.00 0 13.90 0.00 0.00 0.00 28.00 0.00 0 13.90 0.00 0.00 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 61 Summary for Pond G-1: Drainage System G Inflow Area = 1.161 ac, 0.00% Impervious, Inflow Depth = 4.35" for 100 year event Inflow = 2.52 cfs @ 12.74 hrs, Volume= 0.421 of Outflow = 2.52 cfs @ 12.74 hrs, Volume= 0.402 af, Atten= 0%, Lag= 0.1 min Discarded = 0.11 cfs @ 11.19 hrs, Volume= 0.162 of Primary = 2.41 cfs @ 12.74 hrs, Volume= 0.240 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs/2 Peak Elev= 27.64' @ 12.74 hrs Surf.Area= 202 sf Storage= 2,449 cf Plug-Flow detention time= 105.9 min calculated for 0.402 of(95% of inflow) Center-of-Mass det. time= 81.1 min ( 959.5 - 878.5 ) Volume Invert Avail.Storage Storage Description #1 15.50' 2,621 cf 11.33'D x 13.00'H DW-D1 x 2 Device Routing Invert Outlet Devices #1 Discarded 15.50' 24.000 in/hr Exfiltration DW-D1 over Surface area Phase-In= 0.01' #2 Primary 27.50' 24.0" Horiz. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.11 cfs @ 11.19 hrs HW=15.63' (Free Discharge) L1=Exfiltration DW-D1 (Exfiltration Controls 0.11 cfs) Primary OutFlow Max=2.24 cfs @ 12.74 hrs HW=27.64' (Free Discharge) t2=Orifice/Grate (Weir Controls 2.24 cfs @ 1.24 fps) Pond G-1: Drainage System G Hydrograph 7 57 rfg 03 Inflow I Outflow 2.52 cfs Discarded El Inflow Area=1.161 ac 2.41 cfs Peak Elev=27.64' Storage=2,449 cf 2,..,' w o : 0... 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 62 Hydrograph for Pond G-1: Drainage System G Time Inflow Storage Elevation Outflow Discarded Primary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 0.00 0.00 0 15.50 0.00 0.00 0.00 1.00 0.00 0 15.50 0.00 0.00 0.00 2.00 0.00 0 15.50 0.00 0.00 0.00 3.00 0.00 0 15.50 0.00 0.00 0.00 4.00 0.00 0 15.50 0.00 0.00 0.00 5.00 0.00 0 15.50 0.00 0.00 0.00 6.00 0.00 0 15.50 0.00 0.00 0.00 7.00 0.00 0 15.50 0.00 0.00 0.00 8.00 0.00 0 15.50 0.00 0.00 0.00 9.00 0.00 0 15.50 0.00 0.00 0.00 10.00 0.02 5 15.52 0.02 0.02 0.00 11.00 0.10 21 15.61 0.09 0.09 0.00 12.00 0.41 310 17.04 0.11 0.11 0.00 13.00 2.05 2,445 27.62 2.06 0.11 1.95 14.00 0.63 2,428 27.54 0.63 0.11 0.52 15.00 0.38 2,424 27.52 0.38 0.11 0.27 16.00 0.28 2,423 27.51 0.28 0.11 0.17 17.00 0.21 2,421 27.51 0.21 0.11 0.10 18.00 0.16 2,421 27.50 0.17 0.11 0.05 19.00 0.13 2,420 27.50 0.13 0.11 0.02 20.00 0.12 2,420 27.50 0.12 0.11 0.01 21.00 0.11 2,416 27.48 0.11 0.11 0.00 22.00 0.10 2,382 27.31 0.11 0.11 0.00 23.00 0.09 2,315 26.98 0.11 0.11 0.00 24.00 0.08 2,215 26.49 0.11 0.11 0.00 25.00 0.02 2,012 25.48 0.11 0.11 0.00 26.00 0.00 1,630 23.58 0.11 0.11 0.00 27.00 0.00 1,227 21.59 0.11 0.11 0.00 28.00 0.00 824 19.59 0.11 0.11 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 63 Summary for Pond H-1: Drainage System H Inflow Area = 0.995 ac, 0.00% Impervious, Inflow Depth = 4.47" for 100 year event Inflow = 2.61 cfs @ 12.54 hrs, Volume= 0.371 of Outflow = 2.61 cfs @ 12.54 hrs, Volume= 0.359 af, Atten= 0%, Lag= 0.2 min Discarded = 0.11 cfs @ 11.06 hrs, Volume= 0.164 of Primary = 2.50 cfs @ 12.54 hrs, Volume= 0.195 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs/2 Peak Elev= 29.15' @ 12.54 hrs Surf.Area= 202 sf Storage= 2,449 cf Plug-Flow detention time= 118.0 min calculated for 0.359 of(97% of inflow) Center-of-Mass det. time= 100.3 min ( 964.3 - 864.0 ) Volume Invert Avail.Storage Storage Description #1 17.00' 2,621 cf 11.33'D x 13.00'H DW-D1 x 2 Device Routing Invert Outlet Devices #1 Discarded 17.00' 24.000 in/hr Exfiltration DW-D1 over Surface area Phase-In= 0.01' #2 Primary 29.00' 24.0" Horiz. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.11 cfs @ 11.06 hrs HW=17.13' (Free Discharge) L1=Exfiltration DW-D1 (Exfiltration Controls 0.11 cfs) Primary OutFlow Max=2.33 cfs @ 12.54 hrs HW=29.15' (Free Discharge) t2=Orifice/Grate (Weir Controls 2.33 cfs @ 1.26 fps) Pond H-1: Drainage System H Hydrograph 7 Fit rfS Inflow []Outflow 2.61 cfs Inflow Area=0.995 ac Discarded 0 Primary 2.5o cfs Peak Elev=29.15' Stora a=2,449 cf 2,..,' o.. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 64 Hydrograph for Pond H-1: Drainage System H Time Inflow Storage Elevation Outflow Discarded Primary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 0.00 0.00 0 17.00 0.00 0.00 0.00 1.00 0.00 0 17.00 0.00 0.00 0.00 2.00 0.00 0 17.00 0.00 0.00 0.00 3.00 0.00 0 17.00 0.00 0.00 0.00 4.00 0.00 0 17.00 0.00 0.00 0.00 5.00 0.00 0 17.00 0.00 0.00 0.00 6.00 0.00 0 17.00 0.00 0.00 0.00 7.00 0.00 0 17.00 0.00 0.00 0.00 8.00 0.00 0 17.00 0.00 0.00 0.00 9.00 0.00 0 17.00 0.00 0.00 0.00 10.00 0.04 8 17.04 0.03 0.03 0.00 11.00 0.11 25 17.12 0.11 0.11 0.00 12.00 0.56 434 19.15 0.11 0.11 0.00 13.00 1.40 2,439 29.10 1.40 0.11 1.29 14.00 0.45 2,425 29.03 0.45 0.11 0.34 15.00 0.31 2,423 29.02 0.31 0.11 0.20 16.00 0.23 2,422 29.01 0.23 0.11 0.12 17.00 0.17 2,421 29.00 0.17 0.11 0.06 18.00 0.14 2,420 29.00 0.14 0.11 0.02 19.00 0.11 2,420 29.00 0.11 0.11 0.00 20.00 0.10 2,398 28.89 0.11 0.11 0.00 21.00 0.09 2,340 28.61 0.11 0.11 0.00 22.00 0.08 2,252 28.17 0.11 0.11 0.00 23.00 0.08 2,135 27.59 0.11 0.11 0.00 24.00 0.07 1,989 26.86 0.11 0.11 0.00 25.00 0.01 1,721 25.54 0.11 0.11 0.00 26.00 0.00 1,323 23.56 0.11 0.11 0.00 27.00 0.00 920 21.56 0.11 0.11 0.00 28.00 0.00 517 19.56 0.11 0.11 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 65 Summary for Pond 1-1: Drainage System H Inflow Area = 1.283 ac, 0.00% Impervious, Inflow Depth = 4.35" for 100 year event Inflow = 3.72 cfs @ 12.41 hrs, Volume= 0.465 of Outflow = 3.72 cfs @ 12.41 hrs, Volume= 0.465 af, Atten= 0%, Lag= 0.2 min Discarded = 0.17 cfs @ 11.17 hrs, Volume= 0.236 of Primary = 3.55 cfs @ 12.41 hrs, Volume= 0.229 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs/2 Peak Elev= 28.65' @ 12.41 hrs Surf.Area= 302 sf Storage= 3,069 cf Plug-Flow detention time= 109.8 min calculated for 0.465 of(100% of inflow) Center-of-Mass det. time= 109.6 min ( 967.1 - 857.5 ) Volume Invert Avail.Storage Storage Description #1 18.50' 3,327 cf 11.33'D x 11.00'H DW-D1 x 3 Device Routing Invert Outlet Devices #1 Discarded 18.50' 24.000 in/hr Exfiltration DW-D1 over Surface area Phase-In= 0.01' #2 Primary 28.50' 24.0" Horiz. Orifice/Grate X 3.00 C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.17 cfs @ 11.17 hrs HW=18.61' (Free Discharge) L1=Exfiltration DW-D1 (Exfiltration Controls 0.17 cfs) Primary OutFlow Max=3.43 cfs @ 12.41 hrs HW=28.65' (Free Discharge) t2=Orifice/Grate (Weir Controls 3.43 cfs @ 1.25 fps) Pond 1-1: Drainage System H Hydrograph 77 rfg _ 03 Inflow I Outflow 3.72 cfsInflow Area=1.283 ac Discarded 0 Primary 4: 3.55 cfs Peak Elev=28.65' Storage=3,069 cf 3... w 3 2.., o - 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1'9"'20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 66 Hydrograph for Pond 1-1: Drainage System H Time Inflow Storage Elevation Outflow Discarded Primary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 0.00 0.00 0 18.50 0.00 0.00 0.00 1.00 0.00 0 18.50 0.00 0.00 0.00 2.00 0.00 0 18.50 0.00 0.00 0.00 3.00 0.00 0 18.50 0.00 0.00 0.00 4.00 0.00 0 18.50 0.00 0.00 0.00 5.00 0.00 0 18.50 0.00 0.00 0.00 6.00 0.00 0 18.50 0.00 0.00 0.00 7.00 0.00 0 18.50 0.00 0.00 0.00 8.00 0.00 0 18.50 0.00 0.00 0.00 9.00 0.00 0 18.50 0.00 0.00 0.00 10.00 0.05 8 18.53 0.04 0.04 0.00 11.00 0.15 28 18.59 0.14 0.14 0.00 12.00 0.98 651 20.65 0.17 0.17 0.00 13.00 1.30 3,042 28.56 1.31 0.17 1.15 14.00 0.52 3,031 28.52 0.52 0.17 0.35 15.00 0.38 3,030 28.52 0.38 0.17 0.21 16.00 0.28 3,028 28.51 0.28 0.17 0.11 17.00 0.21 3,027 28.51 0.21 0.17 0.04 18.00 0.17 3,025 28.50 0.17 0.17 0.00 19.00 0.14 2,959 28.28 0.17 0.17 0.00 20.00 0.13 2,832 27.86 0.17 0.17 0.00 21.00 0.11 2,660 27.30 0.17 0.17 0.00 22.00 0.10 2,451 26.60 0.17 0.17 0.00 23.00 0.09 2,205 25.79 0.17 0.17 0.00 24.00 0.08 1,922 24.86 0.17 0.17 0.00 25.00 0.00 1,451 23.30 0.17 0.17 0.00 26.00 0.00 847 21.30 0.17 0.17 0.00 27.00 0.00 242 19.30 0.17 0.17 0.00 28.00 0.00 0 18.50 0.00 0.00 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 67 Summary for Pond J-1: Drainage System J Inflow Area = 1.669 ac, 0.00% Impervious, Inflow Depth = 4.35" for 100 year event Inflow = 5.54 cfs @ 12.30 hrs, Volume= 0.605 of Outflow = 5.54 cfs @ 12.30 hrs, Volume= 0.578 af, Atten= 0%, Lag= 0.1 min Discarded = 0.17 cfs @ 10.81 hrs, Volume= 0.248 of Primary = 5.37 cfs @ 12.30 hrs, Volume= 0.329 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs/2 Peak Elev= 23.94' @ 12.30 hrs Surf.Area= 302 sf Storage= 3,990 cf Plug-Flow detention time= 120.3 min calculated for 0.578 of(96% of inflow) Center-of-Mass det. time= 95.8 min ( 946.1 - 850.3 ) Volume Invert Avail.Storage Storage Description #1 10.75' 4,234 cf 11.33'D x 14.00'H DW-D1 x 3 Device Routing Invert Outlet Devices #1 Discarded 10.75' 24.000 in/hr Exfiltration DW-D1 over Surface area Phase-In= 0.01' #2 Primary 23.75' 24.0" Horiz. Orifice/Grate X 3.00 C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.17 cfs @ 10.81 hrs HW=10.89' (Free Discharge) L1=Exfiltration DW-D1 (Exfiltration Controls 0.17 cfs) Primary OutFlow Max=5.19 cfs @ 12.30 hrs HW=23.94' (Free Discharge) t2=Orifice/Grate (Weir Controls 5.19 cfs @ 1.43 fps) Pond J-1: Drainage System J Hydrograph Fi ci�l rfg - 03 Inflow I Outflow 5.54 cfs Inflow_Area=1.669 ac _ Discarded s` p Primary 5.37 cfs Peak Elev=23.94' Storage=3,99'0 cf - 4.. - - - - / N v 3 - -. 0 3.. U. 0.17 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 68 Hydrograph for Pond J-1: Drainage System J Time Inflow Storage Elevation Outflow Discarded Primary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 0.00 0.00 0 10.75 0.00 0.00 0.00 1.00 0.00 0 10.75 0.00 0.00 0.00 2.00 0.00 0 10.75 0.00 0.00 0.00 3.00 0.00 0 10.75 0.00 0.00 0.00 4.00 0.00 0 10.75 0.00 0.00 0.00 5.00 0.00 0 10.75 0.00 0.00 0.00 6.00 0.00 0 10.75 0.00 0.00 0.00 7.00 0.00 0 10.75 0.00 0.00 0.00 8.00 0.00 0 10.75 0.00 0.00 0.00 9.00 0.00 0 10.75 0.00 0.00 0.00 10.00 0.07 16 10.80 0.06 0.06 0.00 11.00 0.22 65 10.96 0.17 0.17 0.00 12.00 1.83 1,469 15.61 0.17 0.17 0.00 13.00 1.27 3,949 23.80 1.27 0.17 1.11 14.00 0.64 3,941 23.78 0.64 0.17 0.47 15.00 0.47 3,940 23.77 0.47 0.17 0.31 16.00 0.35 3,938 23.77 0.35 0.17 0.18 17.00 0.27 3,935 23.76 0.27 0.17 0.10 18.00 0.21 3,933 23.75 0.21 0.17 0.04 19.00 0.18 3,932 23.75 0.18 0.17 0.01 20.00 0.16 3,928 23.74 0.17 0.17 0.00 21.00 0.15 3,880 23.58 0.17 0.17 0.00 22.00 0.13 3,783 23.26 0.17 0.17 0.00 23.00 0.12 3,640 22.78 0.17 0.17 0.00 24.00 0.11 3,448 22.15 0.17 0.17 0.00 25.00 0.00 2,971 20.57 0.17 0.17 0.00 26.00 0.00 2,366 18.57 0.17 0.17 0.00 27.00 0.00 1,761 16.57 0.17 0.17 0.00 28.00 0.00 1,156 14.57 0.17 0.17 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 69 Summary for Pond K-1: Drainage System K Inflow Area = 0.910 ac, 6.90% Impervious, Inflow Depth = 4.72" for 100 year event Inflow = 3.46 cfs @ 12.26 hrs, Volume= 0.358 of Outflow = 3.46 cfs @ 12.26 hrs, Volume= 0.351 af, Atten= 0%, Lag= 0.1 min Discarded = 0.11 cfs @ 10.69 hrs, Volume= 0.168 of Primary = 3.35 cfs @ 12.26 hrs, Volume= 0.183 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs/2 Peak Elev= 29.68' @ 12.26 hrs Surf.Area= 202 sf Storage= 2,457 cf Plug-Flow detention time= 122.8 min calculated for 0.351 of(98% of inflow) Center-of-Mass det. time= 112.0 min ( 953.7 - 841.8 ) Volume Invert Avail.Storage Storage Description #1 17.50' 2,621 cf 11.33'D x 13.00'H DW-D1 x 2 Device Routing Invert Outlet Devices #1 Discarded 17.50' 24.000 in/hr Exfiltration DW-D1 over Surface area Phase-In= 0.01' #2 Primary 29.50' 24.0" Horiz. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.11 cfs @ 10.69 hrs HW=17.63' (Free Discharge) L1=Exfiltration DW-D1 (Exfiltration Controls 0.11 cfs) Primary OutFlow Max=3.22 cfs @ 12.26 hrs HW=29.68' (Free Discharge) t2=Orifice/Grate (Weir Controls 3.22 cfs @ 1.40 fps) Pond K-1: Drainage System K Hydrograph I dF rfS' Inflow II'l Outflow 3.46 cfs Inflow Area=0.910 ac Discarded ®Primary 3.35 cfs Peak Elev=29.68' Storage=2,457 cf 2: 0.11 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 70 Hydrograph for Pond K-1: Drainage System K Time Inflow Storage Elevation Outflow Discarded Primary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 0.00 0.00 0 17.50 0.00 0.00 0.00 1.00 0.00 0 17.50 0.00 0.00 0.00 2.00 0.00 0 17.50 0.00 0.00 0.00 3.00 0.00 0 17.50 0.00 0.00 0.00 4.00 0.00 0 17.50 0.00 0.00 0.00 5.00 0.00 0 17.50 0.00 0.00 0.00 6.00 0.00 0 17.50 0.00 0.00 0.00 7.00 0.00 0 17.50 0.00 0.00 0.00 8.00 0.00 0 17.50 0.00 0.00 0.00 9.00 0.01 3 17.51 0.01 0.01 0.00 10.00 0.06 14 17.57 0.06 0.06 0.00 11.00 0.16 55 17.77 0.11 0.11 0.00 12.00 1.28 1,062 22.77 0.11 0.11 0.00 13.00 0.67 2,429 29.55 0.67 0.11 0.56 14.00 0.36 2,424 29.52 0.36 0.11 0.25 15.00 0.27 2,422 29.51 0.27 0.11 0.16 16.00 0.20 2,421 29.51 0.20 0.11 0.08 17.00 0.15 2,420 29.50 0.15 0.11 0.04 18.00 0.12 2,420 29.50 0.12 0.11 0.01 19.00 0.10 2,401 29.41 0.11 0.11 0.00 20.00 0.09 2,345 29.13 0.11 0.11 0.00 21.00 0.08 2,256 28.69 0.11 0.11 0.00 22.00 0.08 2,140 28.11 0.11 0.11 0.00 23.00 0.07 1,997 27.40 0.11 0.11 0.00 24.00 0.06 1,827 26.56 0.11 0.11 0.00 25.00 0.00 1,486 24.87 0.11 0.11 0.00 26.00 0.00 1,083 22.87 0.11 0.11 0.00 27.00 0.00 680 20.87 0.11 0.11 0.00 28.00 0.00 277 18.87 0.11 0.11 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 71 Summary for Pond L-1: Drainage System L Inflow Area = 4.773 ac, 85.59% Impervious, Inflow Depth = 8.16" for 100 year event Inflow = 48.55 cfs @ 12.02 hrs, Volume= 3.244 of Outflow = 24.20 cfs @ 12.11 hrs, Volume= 3.243 af, Atten= 50%, Lag= 5.3 min Discarded = 24.20 cfs @ 12.11 hrs, Volume= 3.243 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs/2 Peak Elev= 28.22' @ 12.11 hrs Surf.Area=43,558 sf Storage= 9,610 cf Plug-Flow detention time= 1.9 min calculated for 3.243 of(100% of inflow) Center-of-Mass det. time= 1.8 min ( 760.1 - 758.3 ) Volume Invert Avail.Storage Storage Description #1 28.00' 152,669 cf Custom Stage Data (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 28.00 42,471 799.0 0 0 42,471 29.00 47,443 841.0 44,934 44,934 48,013 30.00 53,826 897.0 50,601 95,535 55,807 31.00 60,508 950.0 57,134 152,669 63,651 Device Routing Invert Outlet Devices #1 Discarded 28.00' 24.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=24.20 cfs @ 12.11 hrs HW=28.22' (Free Discharge) L1=Exfiltration (Exfiltration Controls 24.20 cfs) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 72 Pond L-1: Drainage System L Hydrograph Inflow 48.55 cfS Discarded 50: - - - - Inflow Area=4.773 ac - 45 ' . - - Peak E1ev=28.22' - 40 Storage=9,610 cf 3530 ,:: w 24.20 cfs o 25 20,.. 15 10'„ - - 5- 0 0.: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 73 Hydrograph for Pond L-1: Drainage System L Time Inflow Storage Elevation Discarded (hours) (cfs) (cubic-feet) (feet) (cfs) 0.00 0.00 0 28.00 0.00 1.00 0.00 0 28.00 0.00 2.00 0.03 2 28.00 0.03 3.00 0.13 7 28.00 0.13 4.00 0.23 13 28.00 0.23 5.00 0.34 18 28.00 0.34 6.00 0.44 24 28.00 0.44 7.00 0.65 35 28.00 0.64 8.00 0.88 47 28.00 0.88 9.00 1.36 73 28.00 1.35 10.00 1.88 101 28.00 1.88 11.00 2.92 156 28.00 2.90 12.00 43.88 3,538 28.08 23.82 13.00 3.22 177 28.00 3.28 14.00 2.13 115 28.00 2.14 15.00 1.62 88 28.00 1.63 16.00 1.13 61 28.00 1.14 17.00 0.91 49 28.00 0.91 18.00 0.69 38 28.00 0.70 19.00 0.63 34 28.00 0.63 20.00 0.56 30 28.00 0.56 21.00 0.51 28 28.00 0.51 22.00 0.46 25 28.00 0.46 23.00 0.42 22 28.00 0.42 24.00 0.37 20 28.00 0.37 25.00 0.00 0 28.00 0.00 26.00 0.00 0 28.00 0.00 27.00 0.00 0 28.00 0.00 28.00 0.00 0 28.00 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 74 Summary for Pond M-1: Drainage System K Inflow Area = 1.065 ac, 22.18% Impervious, Inflow Depth = 5.21" for 100 year event Inflow = 4.84 cfs @ 12.22 hrs, Volume= 0.463 of Outflow = 4.82 cfs @ 12.23 hrs, Volume= 0.452 af, Atten= 0%, Lag= 0.9 min Discarded = 0.17 cfs @ 10.59 hrs, Volume= 0.256 of Primary = 4.66 cfs @ 12.23 hrs, Volume= 0.196 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs/ 3 Peak Elev= 30.42' @ 12.23 hrs Surf.Area= 302 sf Storage=4,286 cf Plug-Flow detention time= 159.1 min calculated for 0.452 of(98% of inflow) Center-of-Mass det. time= 145.6 min ( 976.3 - 830.7 ) Volume Invert Avail.Storage Storage Description #1 16.25' 4,537 cf 11.33'D x 15.00'H DW-D1 x 3 Device Routing Invert Outlet Devices #1 Discarded 16.25' 24.000 in/hr Exfiltration DW-D1 over Surface area Phase-In= 0.01' #2 Primary 30.25' 24.0" Horiz. Orifice/Grate X 3.00 C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.17 cfs @ 10.59 hrs HW=16.40' (Free Discharge) L1=Exfiltration DW-D1 (Exfiltration Controls 0.17 cfs) Primary OutFlow Max=4.34 cfs @ 12.23 hrs HW=30.42' (Free Discharge) t2=Orifice/Grate (Weir Controls 4.34 cfs @ 1.35 fps) Pond M-1: Drainage System K Hydrograph 4 84 rfs 03 M 4.82 cfs Inflow Area=1.065 ac Ell - 4.66 cfs - Peak Elev=30.42' - 5,. Storage=4,286 cf 4 3 - 3 o LL i 2 i 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1'7""'1"8""1"9""'2"O""'2'1"""2"2'-'23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 75 Hydrograph for Pond M-1: Drainage System K Time Inflow Storage Elevation Outflow Discarded Primary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 0.00 0.00 0 16.25 0.00 0.00 0.00 1.00 0.00 0 16.25 0.00 0.00 0.00 2.00 0.00 0 16.25 0.00 0.00 0.00 3.00 0.00 0 16.25 0.00 0.00 0.00 4.00 0.00 0 16.25 0.00 0.00 0.00 5.00 0.00 0 16.25 0.00 0.00 0.00 6.00 0.00 0 16.25 0.00 0.00 0.00 7.00 0.00 0 16.25 0.00 0.00 0.00 8.00 0.01 2 16.26 0.01 0.01 0.00 9.00 0.05 11 16.29 0.04 0.04 0.00 10.00 0.11 29 16.34 0.11 0.11 0.00 11.00 0.25 110 16.61 0.17 0.17 0.00 12.00 2.01 1,725 21.95 0.17 0.17 0.00 13.00 0.76 4,244 30.28 0.77 0.17 0.60 14.00 0.44 4,239 30.26 0.44 0.17 0.27 15.00 0.33 4,237 30.26 0.33 0.17 0.16 16.00 0.24 4,236 30.25 0.24 0.17 0.07 17.00 0.18 4,235 30.25 0.18 0.17 0.02 18.00 0.14 4,206 30.16 0.17 0.17 0.00 19.00 0.12 4,072 29.71 0.17 0.17 0.00 20.00 0.11 3,891 29.11 0.17 0.17 0.00 21.00 0.10 3,669 28.38 0.17 0.17 0.00 22.00 0.09 3,414 27.54 0.17 0.17 0.00 23.00 0.08 3,126 26.58 0.17 0.17 0.00 24.00 0.07 2,804 25.52 0.17 0.17 0.00 25.00 0.00 2,263 23.73 0.17 0.17 0.00 26.00 0.00 1,658 21.73 0.17 0.17 0.00 27.00 0.00 1,053 19.73 0.17 0.17 0.00 28.00 0.00 448 17.73 0.17 0.17 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 76 Summary for Pond N-1: Drainage System K Inflow Area = 2.375 ac, 18.45% Impervious, Inflow Depth = 5.09" for 100 year event Inflow = 8.66 cfs @ 12.34 hrs, Volume= 1.007 of Outflow = 8.65 cfs @ 12.35 hrs, Volume= 0.945 af, Atten= 0%, Lag= 0.3 min Discarded = 0.28 cfs @ 10.47 hrs, Volume= 0.427 of Primary = 8.37 cfs @ 12.35 hrs, Volume= 0.518 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs/2 Peak Elev= 28.68' @ 12.35 hrs Surf.Area= 504 sf Storage= 7,654 cf Plug-Flow detention time= 136.2 min calculated for 0.945 of(94% of inflow) Center-of-Mass det. time= 103.5 min ( 945.1 - 841.6 ) Volume Invert Avail.Storage Storage Description #1 13.50' 8,066 cf 11.33'D x 16.00'H DW-D1 x 5 Device Routing Invert Outlet Devices #1 Discarded 13.50' 24.000 in/hr Exfiltration DW-D1 over Surface area Phase-In= 0.01' #2 Primary 28.50' 24.0" Horiz. Orifice/Grate X 5.00 C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.28 cfs @ 10.47 hrs HW=13.66' (Free Discharge) L1=Exfiltration DW-D1 (Exfiltration Controls 0.28 cfs) Primary OutFlow Max=8.13 cfs @ 12.35 hrs HW=28.68' (Free Discharge) t2=Orifice/Grate (Weir Controls 8.13 cfs @ 1.40 fps) Pond N-1: Drainage System K Hydrograph R RR rfS Inflow II'�Outflow 8.65 cfs Inflow Area=2.375 ac ®PrimPrimary ary ded9 - -- 8.37 cfs - Peak Elev=28.68' - toracge=7,654 cf - 6 w 0 LL 4. i 3 2: 1: 0.28 c 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 77 Hydrograph for Pond N-1: Drainage System K Time Inflow Storage Elevation Outflow Discarded Primary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 0.00 0.00 0 13.50 0.00 0.00 0.00 1.00 0.00 0 13.50 0.00 0.00 0.00 2.00 0.00 0 13.50 0.00 0.00 0.00 3.00 0.00 0 13.50 0.00 0.00 0.00 4.00 0.00 0 13.50 0.00 0.00 0.00 5.00 0.00 0 13.50 0.00 0.00 0.00 6.00 0.00 0 13.50 0.00 0.00 0.00 7.00 0.00 0 13.50 0.00 0.00 0.00 8.00 0.00 0 13.50 0.00 0.00 0.00 9.00 0.07 18 13.54 0.06 0.06 0.00 10.00 0.20 55 13.61 0.19 0.19 0.00 11.00 0.46 266 14.03 0.28 0.28 0.00 12.00 2.79 2,753 18.96 0.28 0.28 0.00 13.00 2.33 7,594 28.56 2.34 0.28 2.06 14.00 1.02 7,580 28.54 1.03 0.28 0.75 15.00 0.75 7,573 28.52 0.75 0.28 0.47 16.00 0.55 7,568 28.51 0.55 0.28 0.27 17.00 0.42 7,565 28.51 0.42 0.28 0.14 18.00 0.33 7,563 28.50 0.33 0.28 0.05 19.00 0.28 7,561 28.50 0.28 0.28 0.00 20.00 0.25 7,501 28.38 0.28 0.28 0.00 21.00 0.23 7,350 28.08 0.28 0.28 0.00 22.00 0.21 7,125 27.63 0.28 0.28 0.00 23.00 0.19 6,826 27.04 0.28 0.28 0.00 24.00 0.17 6,454 26.30 0.28 0.28 0.00 25.00 0.00 5,675 24.76 0.28 0.28 0.00 26.00 0.00 4,667 22.76 0.28 0.28 0.00 27.00 0.00 3,659 20.76 0.28 0.28 0.00 28.00 0.00 2,651 18.76 0.28 0.28 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 78 Summary for Pond 0-1: Drainage System K Inflow Area = 0.636 ac, 87.10% Impervious, Inflow Depth = 8.28" for 100 year event Inflow = 3.35 cfs @ 12.35 hrs, Volume= 0.439 of Outflow = 3.14 cfs @ 12.44 hrs, Volume= 0.439 af, Atten= 6%, Lag= 5.6 min Discarded = 0.28 cfs @ 10.60 hrs, Volume= 0.345 of Primary = 2.86 cfs @ 12.44 hrs, Volume= 0.094 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs/2 Peak Elev= 31.09' @ 12.44 hrs Surf.Area= 504 sf Storage=4,581 cf Plug-Flow detention time= 102.1 min calculated for 0.439 of(100% of inflow) Center-of-Mass det. time= 102.0 min ( 879.8 - 777.8 ) Volume Invert Avail.Storage Storage Description #1 22.00' 5,041 cf 11.33'D x 10.00'H DW-D1 x 5 Device Routing Invert Outlet Devices #1 Discarded 22.00' 24.000 in/hr Exfiltration DW-D1 over Surface area Phase-In= 0.01' #2 Primary 31.00' 24.0" Horiz. Orifice/Grate X 5.00 C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.28 cfs @ 10.60 hrs HW=22.10' (Free Discharge) L1=Exfiltration DW-D1 (Exfiltration Controls 0.28 cfs) Primary OutFlow Max=2.69 cfs @ 12.44 hrs HW=31.09' (Free Discharge) t2=Orifice/Grate (Weir Controls 2.69 cfs @ 0.97 fps) Pond 0-1: Drainage System K Hydrograph 03 3.35 CfSInflow II'NIIOutflow Inflow Area=0.636 ac Discarded 3.14 cfs 0 Primary Peak Elev=31 .09' 3:: 2.86 cfs Storage=4,581 cf 2, o U. 0.28 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 79 Hydrograph for Pond 0-1: Drainage System K Time Inflow Storage Elevation Outflow Discarded Primary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 0.00 0.00 0 22.00 0.00 0.00 0.00 1.00 0.00 0 22.00 0.00 0.00 0.00 2.00 0.00 0 22.00 0.00 0.00 0.00 3.00 0.02 3 22.01 0.02 0.02 0.00 4.00 0.03 5 22.01 0.03 0.03 0.00 5.00 0.05 8 22.02 0.04 0.04 0.00 6.00 0.06 10 22.02 0.06 0.06 0.00 7.00 0.08 14 22.03 0.08 0.08 0.00 8.00 0.11 20 22.04 0.11 0.11 0.00 9.00 0.16 29 22.06 0.16 0.16 0.00 10.00 0.23 41 22.08 0.23 0.23 0.00 11.00 0.34 99 22.20 0.28 0.28 0.00 12.00 1.31 1,086 24.15 0.28 0.28 0.00 13.00 0.85 4,546 31.02 0.85 0.28 0.57 14.00 0.34 4,538 31.00 0.34 0.28 0.06 15.00 0.24 4,500 30.93 0.28 0.28 0.00 16.00 0.18 4,245 30.42 0.28 0.28 0.00 17.00 0.13 3,779 29.50 0.28 0.28 0.00 18.00 0.10 3,196 28.34 0.28 0.28 0.00 19.00 0.09 2,523 27.00 0.28 0.28 0.00 20.00 0.08 1,812 25.59 0.28 0.28 0.00 21.00 0.07 1,071 24.12 0.28 0.28 0.00 22.00 0.06 306 22.61 0.28 0.28 0.00 23.00 0.06 10 22.02 0.06 0.06 0.00 24.00 0.05 9 22.02 0.05 0.05 0.00 25.00 0.00 0 22.00 0.00 0.00 0.00 26.00 0.00 0 22.00 0.00 0.00 0.00 27.00 0.00 0 22.00 0.00 0.00 0.00 28.00 0.00 0 22.00 0.00 0.00 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 80 Summary for Pond P-1: Drainage System P Inflow Area = 1.187 ac, 3.48% Impervious, Inflow Depth = 4.35" for 100 year event Inflow = 4.52 cfs @ 12.22 hrs, Volume= 0.430 of Outflow = 4.51 cfs @ 12.22 hrs, Volume= 0.407 af, Atten= 0%, Lag= 0.1 min Discarded = 0.11 cfs @ 10.66 hrs, Volume= 0.167 of Primary = 4.40 cfs @ 12.22 hrs, Volume= 0.240 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs/2 Peak Elev= 28.72' @ 12.22 hrs Surf.Area= 202 sf Storage= 2,868 cf Plug-Flow detention time= 120.1 min calculated for 0.407 of(95% of inflow) Center-of-Mass det. time= 91.2 min ( 935.8 - 844.5 ) Volume Invert Avail.Storage Storage Description #1 14.50' 3,025 cf 11.33'D x 15.00'H DW-D1 x 2 Device Routing Invert Outlet Devices #1 Discarded 14.50' 24.000 in/hr Exfiltration DW-D1 over Surface area Phase-In= 0.01' #2 Primary 28.50' 24.0" Horiz. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.11 cfs @ 10.66 hrs HW=14.65' (Free Discharge) L1=Exfiltration DW-D1 (Exfiltration Controls 0.11 cfs) Primary OutFlow Max=4.27 cfs @ 12.22 hrs HW=28.72' (Free Discharge) t2=Orifice/Grate (Weir Controls 4.27 cfs @ 1.54 fps) Pond P-1: Drainage System P Hydrograph A rid rfs 03 Inflow I Outflow 4.51 cfs Inflow Area=1.187 ac Primar 5 y � � �� - - . ®Primary 4.40 cfs Peak Elev=28.72' 4.. Storage=2,868 cf 3,.. 0 0.11 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 81 Hydrograph for Pond P-1: Drainage System P Time Inflow Storage Elevation Outflow Discarded Primary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 0.00 0.00 0 14.50 0.00 0.00 0.00 1.00 0.00 0 14.50 0.00 0.00 0.00 2.00 0.00 0 14.50 0.00 0.00 0.00 3.00 0.00 0 14.50 0.00 0.00 0.00 4.00 0.00 0 14.50 0.00 0.00 0.00 5.00 0.00 0 14.50 0.00 0.00 0.00 6.00 0.00 0 14.50 0.00 0.00 0.00 7.00 0.00 0 14.50 0.00 0.00 0.00 8.00 0.00 0 14.50 0.00 0.00 0.00 9.00 0.00 0 14.50 0.00 0.00 0.00 10.00 0.06 14 14.57 0.05 0.05 0.00 11.00 0.17 71 14.85 0.11 0.11 0.00 12.00 1.76 1,463 21.76 0.11 0.11 0.00 13.00 0.75 2,833 28.55 0.75 0.11 0.64 14.00 0.44 2,828 28.53 0.44 0.11 0.33 15.00 0.33 2,826 28.52 0.33 0.11 0.22 16.00 0.24 2,825 28.51 0.24 0.11 0.13 17.00 0.19 2,824 28.51 0.19 0.11 0.07 18.00 0.15 2,823 28.50 0.15 0.11 0.03 19.00 0.13 2,823 28.50 0.13 0.11 0.01 20.00 0.11 2,823 28.50 0.11 0.11 0.00 21.00 0.10 2,811 28.44 0.11 0.11 0.00 22.00 0.09 2,766 28.22 0.11 0.11 0.00 23.00 0.09 2,688 27.83 0.11 0.11 0.00 24.00 0.08 2,575 27.27 0.11 0.11 0.00 25.00 0.00 2,236 25.59 0.11 0.11 0.00 26.00 0.00 1,833 23.59 0.11 0.11 0.00 27.00 0.00 1,429 21.59 0.11 0.11 0.00 28.00 0.00 1,026 19.59 0.11 0.11 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 82 Summary for Pond Q-1: Drainage System Q Inflow Area = 2.338 ac, 27.46% Impervious, Inflow Depth = 5.46" for 100 year event Inflow = 10.32 cfs @ 12.25 hrs, Volume= 1.064 of Outflow = 10.31 cfs @ 12.26 hrs, Volume= 1.014 af, Atten= 0%, Lag= 0.2 min Discarded = 0.34 cfs @ 10.35 hrs, Volume= 0.521 of Primary = 9.98 cfs @ 12.26 hrs, Volume= 0.494 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs/2 Peak Elev= 28.68' @ 12.26 hrs Surf.Area= 605 sf Storage= 9,185 cf Plug-Flow detention time= 151.2 min calculated for 1.014 of(95% of inflow) Center-of-Mass det. time= 125.6 min ( 955.2 - 829.6 ) Volume Invert Avail.Storage Storage Description #1 13.50' 9,679 cf 11.33'D x 16.00'H DW-D1 x 6 Device Routing Invert Outlet Devices #1 Discarded 13.50' 24.000 in/hr Exfiltration DW-D1 over Surface area Phase-In= 0.01' #2 Primary 28.50' 24.0" Horiz. Orifice/Grate X 6.00 C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.34 cfs @ 10.35 hrs HW=13.66' (Free Discharge) L1=Exfiltration DW-D1 (Exfiltration Controls 0.34 cfs) Primary OutFlow Max=9.67 cfs @ 12.26 hrs HW=28.68' (Free Discharge) t2=Orifice/Grate (Weir Controls 9.67 cfs @ 1.40 fps) Pond Q-1: Drainage System Q Hydrograph in *? rfS 03 Inflow I Outflow 10.31 cfs Discarded ' Inflow ►rea=2.338 ac ®Primary 11 9.9s cfs Peak Elegy=28.68' 10 9 Storage=9,185 cf g: - 7 - 6 3 oFL ' 5 , 3 4 2 0.34c 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 83 Hydrograph for Pond Q-1: Drainage System Q Time Inflow Storage Elevation Outflow Discarded Primary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 0.00 0.00 0 13.50 0.00 0.00 0.00 1.00 0.00 0 13.50 0.00 0.00 0.00 2.00 0.00 0 13.50 0.00 0.00 0.00 3.00 0.00 0 13.50 0.00 0.00 0.00 4.00 0.00 0 13.50 0.00 0.00 0.00 5.00 0.00 0 13.50 0.00 0.00 0.00 6.00 0.00 0 13.50 0.00 0.00 0.00 7.00 0.00 0 13.50 0.00 0.00 0.00 8.00 0.03 9 13.51 0.03 0.03 0.00 9.00 0.12 33 13.55 0.11 0.11 0.00 10.00 0.28 77 13.63 0.27 0.27 0.00 11.00 0.58 396 14.15 0.34 0.34 0.00 12.00 4.05 3,924 19.99 0.34 0.34 0.00 13.00 1.89 9,104 28.55 1.90 0.34 1.56 14.00 1.01 9,090 28.53 1.01 0.34 0.67 15.00 0.74 9,084 28.52 0.75 0.34 0.41 16.00 0.54 9,079 28.51 0.54 0.34 0.20 17.00 0.42 9,076 28.50 0.42 0.34 0.08 18.00 0.32 9,071 28.50 0.34 0.34 0.00 19.00 0.28 8,925 28.25 0.34 0.34 0.00 20.00 0.25 8,668 27.83 0.34 0.34 0.00 21.00 0.23 8,320 27.25 0.34 0.34 0.00 22.00 0.21 7,897 26.55 0.34 0.34 0.00 23.00 0.19 7,399 25.73 0.34 0.34 0.00 24.00 0.17 6,826 24.78 0.34 0.34 0.00 25.00 0.00 5,789 23.07 0.34 0.34 0.00 26.00 0.00 4,579 21.07 0.34 0.34 0.00 27.00 0.00 3,369 19.07 0.34 0.34 0.00 28.00 0.00 2,159 17.07 0.34 0.34 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 84 Summary for Pond R-1: Drainage System P Inflow Area = 2.444 ac, 16.87% Impervious, Inflow Depth = 5.09" for 100 year event Inflow = 8.10 cfs @ 12.43 hrs, Volume= 1.036 of Outflow = 8.10 cfs @ 12.44 hrs, Volume= 0.970 af, Atten= 0%, Lag= 0.1 min Discarded = 0.28 cfs @ 10.52 hrs, Volume= 0.426 of Primary = 7.82 cfs @ 12.44 hrs, Volume= 0.544 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs/2 Peak Elev= 28.67' @ 12.44 hrs Surf.Area= 504 sf Storage= 7,649 cf Plug-Flow detention time= 132.2 min calculated for 0.970 of(94% of inflow) Center-of-Mass det. time= 98.1 min ( 945.2 - 847.0 ) Volume Invert Avail.Storage Storage Description #1 13.50' 8,066 cf 11.33'D x 16.00'H DW-D1 x 5 Device Routing Invert Outlet Devices #1 Discarded 13.50' 24.000 in/hr Exfiltration DW-D1 over Surface area Phase-In= 0.01' #2 Primary 28.50' 24.0" Horiz. Orifice/Grate X 5.00 C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.28 cfs @ 10.52 hrs HW=13.66' (Free Discharge) L1=Exfiltration DW-D1 (Exfiltration Controls 0.28 cfs) Primary OutFlow Max=7.44 cfs @ 12.44 hrs HW=28.67' (Free Discharge) t2=Orifice/Grate (Weir Controls 7.44 cfs @ 1.36 fps) Pond R-1: Drainage System P Hydrograph R 1(1 rfg Inflow I Outflow 8.10 CfS ®Discarded 9 Inflow Area=2.444 ac ®Primary $ � - 7.82 cfs Peak Elev=28.67'__ Storage=7,649 cf- 6,::-; 5 0 4 3,:: 2, 1 0.28c o . 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 85 Hydrograph for Pond R-1: Drainage System P Time Inflow Storage Elevation Outflow Discarded Primary (hours) (cfs) (cubic-feet) (feet) (cfs) (cfs) (cfs) 0.00 0.00 0 13.50 0.00 0.00 0.00 1.00 0.00 0 13.50 0.00 0.00 0.00 2.00 0.00 0 13.50 0.00 0.00 0.00 3.00 0.00 0 13.50 0.00 0.00 0.00 4.00 0.00 0 13.50 0.00 0.00 0.00 5.00 0.00 0 13.50 0.00 0.00 0.00 6.00 0.00 0 13.50 0.00 0.00 0.00 7.00 0.00 0 13.50 0.00 0.00 0.00 8.00 0.00 0 13.50 0.00 0.00 0.00 9.00 0.06 16 13.53 0.06 0.06 0.00 10.00 0.20 53 13.60 0.18 0.18 0.00 11.00 0.45 235 13.97 0.28 0.28 0.00 12.00 2.25 2,339 18.14 0.28 0.28 0.00 13.00 2.99 7,600 28.58 3.01 0.28 2.73 14.00 1.10 7,582 28.54 1.10 0.28 0.82 15.00 0.79 7,574 28.52 0.79 0.28 0.51 16.00 0.58 7,569 28.51 0.59 0.28 0.31 17.00 0.44 7,565 28.51 0.44 0.28 0.16 18.00 0.35 7,563 28.50 0.35 0.28 0.07 19.00 0.29 7,562 28.50 0.29 0.28 0.01 20.00 0.26 7,535 28.45 0.28 0.28 0.00 21.00 0.24 7,417 28.21 0.28 0.28 0.00 22.00 0.22 7,221 27.82 0.28 0.28 0.00 23.00 0.19 6,949 27.29 0.28 0.28 0.00 24.00 0.17 6,602 26.60 0.28 0.28 0.00 25.00 0.01 5,883 25.17 0.28 0.28 0.00 26.00 0.00 4,878 23.18 0.28 0.28 0.00 27.00 0.00 3,870 21.18 0.28 0.28 0.00 28.00 0.00 2,862 19.18 0.28 0.28 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 86 Summary for Pond S-1: Drainage System S Inflow Area = 7.649 ac, 87.82% Impervious, Inflow Depth = 8.28" for 100 year event Inflow = 39.72 cfs @ 12.37 hrs, Volume= 5.276 of Outflow = 20.29 cfs @ 12.74 hrs, Volume= 5.276 af, Atten= 49%, Lag= 22.2 min Discarded = 20.29 cfs @ 12.74 hrs, Volume= 5.276 of Routing by Stor-Ind method, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Peak Elev= 26.88' @ 12.74 hrs Surf.Area= 36,517 sf Storage= 30,166 cf Plug-Flow detention time= 7.5 min calculated for 5.276 of(100% of inflow) Center-of-Mass det. time= 7.5 min ( 786.1 - 778.6 ) Volume Invert Avail.Storage Storage Description #1 26.00' 169,262 cf Custom Stage Data (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 26.00 32,326 769.0 0 0 32,326 27.00 37,126 812.0 34,698 34,698 37,793 28.00 42,167 853.0 39,620 74,318 43,289 29.00 47,439 893.0 44,777 119,095 48,915 30.00 52,944 933.0 50,166 169,262 54,799 Device Routing Invert Outlet Devices #1 Discarded 26.00' 24.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=20.29 cfs @ 12.74 hrs HW=26.88' (Free Discharge) 1=Exfiltration (Exfiltration Controls 20.29 cfs) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 87 Pond S-1: Drainage System S Hydrograph FEI Inflow 44 39.72 cfs ®Discarded 40':' Inflow Area=7.649 ac 42 - r 36'' 38 - ; Peak Elev=26, 8'-_ 32 _ _ 34 Storage=30,166 cf 30'' 28" 26:: 22„ 2� 3 0.29 cfs zo U. 14'' 12... - 10„ 8, 6' 4' 2'.' 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 88 Hydrograph for Pond S-1: Drainage System S Time Inflow Storage Elevation Discarded (hours) (cfs) (cubic-feet) (feet) (cfs) 0.00 0.00 0 26.00 0.00 1.00 0.00 0 26.00 0.00 2.00 0.03 2 26.00 0.03 3.00 0.20 14 26.00 0.20 4.00 0.37 27 26.00 0.37 5.00 0.54 39 26.00 0.54 6.00 0.71 50 26.00 0.70 7.00 0.97 69 26.00 0.96 8.00 1.33 95 26.00 1.33 9.00 1.94 138 26.00 1.93 10.00 2.76 197 26.01 2.74 11.00 4.08 290 26.01 4.05 12.00 15.22 1,027 26.03 14.31 13.00 10.60 25,026 26.73 19.90 14.00 4.09 296 26.01 4.13 15.00 2.93 211 26.01 2.94 16.00 2.13 154 26.00 2.15 17.00 1.60 115 26.00 1.60 18.00 1.25 90 26.00 1.26 19.00 1.05 75 26.00 1.05 20.00 0.94 68 26.00 0.94 21.00 0.85 61 26.00 0.86 22.00 0.78 56 26.00 0.78 23.00 0.70 50 26.00 0.70 24.00 0.62 45 26.00 0.62 25.00 0.01 1 26.00 0.01 26.00 0.00 0 26.00 0.00 27.00 0.00 0 26.00 0.00 28.00 0.00 0 26.00 0.00 HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 89 Summary for Link 2L: Outfall Overall Inflow Area = 25.164 ac, 21.90% Impervious, Inflow Depth = 2.45" for 100 year event Inflow = 78.97 cfs @ 12.34 hrs, Volume= 5.143 of Primary = 78.97 cfs @ 12.34 hrs, Volume= 5.143 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-28.00 hrs, dt= 0.01 hrs Link 2L: Outfall Overall Hydrograph - - ®Inflow ®Primary 78.97 cfs Inflow Area=25.164 ac 85, 70i 65 60::: �'f 55 v 45 - - - - - - 3 0 U. 40 35-: 30 25? 20:' i 15;i, 10 , 5- 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Time (hours) HydroCAD_POST Development Type 11124-hr 100 year Rainfall=9.00" Prepared by Microsoft Printed 12/21/2016 HydroCADO 10.00-18 s/n 01038 ©2016 HydroCAD Software Solutions LLC Page 90 Hydrograph for Link 2L: Outfall Overall Time Inflow Elevation Primary Time Inflow Elevation Primary (hours) (cfs) (feet) (cfs) (hours) (cfs) (feet) (cfs) 0.00 0.00 0.00 0.00 26.50 0.00 0.00 0.00 0.50 0.00 0.00 0.00 27.00 0.00 0.00 0.00 1.00 0.00 0.00 0.00 27.50 0.00 0.00 0.00 1.50 0.00 0.00 0.00 28.00 0.00 0.00 0.00 2.00 0.00 0.00 0.00 2.50 0.00 0.00 0.00 3.00 0.00 0.00 0.00 3.50 0.00 0.00 0.00 4.00 0.00 0.00 0.00 4.50 0.00 0.00 0.00 5.00 0.00 0.00 0.00 5.50 0.00 0.00 0.00 6.00 0.00 0.00 0.00 6.50 0.00 0.00 0.00 7.00 0.00 0.00 0.00 7.50 0.00 0.00 0.00 8.00 0.00 0.00 0.00 8.50 0.00 0.00 0.00 9.00 0.00 0.00 0.00 9.50 0.00 0.00 0.00 10.00 0.00 0.00 0.00 10.50 0.00 0.00 0.00 11.00 0.00 0.00 0.00 11.50 0.00 0.00 0.00 12.00 0.00 0.00 0.00 12.50 67.20 0.00 67.20 13.00 21.36 0.00 21.36 13.50 10.31 0.00 10.31 14.00 7.21 0.00 7.21 14.50 5.33 0.00 5.33 15.00 4.22 0.00 4.22 15.50 3.20 0.00 3.20 16.00 2.17 0.00 2.17 16.50 1.35 0.00 1.35 17.00 0.95 0.00 0.95 17.50 0.65 0.00 0.65 18.00 0.37 0.00 0.37 18.50 0.20 0.00 0.20 19.00 0.12 0.00 0.12 19.50 0.09 0.00 0.09 20.00 0.06 0.00 0.06 20.50 0.05 0.00 0.05 21.00 0.04 0.00 0.04 21.50 0.04 0.00 0.04 22.00 0.03 0.00 0.03 22.50 0.02 0.00 0.02 23.00 0.02 0.00 0.02 23.50 0.01 0.00 0.01 24.00 0.00 0.00 0.00 24.50 0.00 0.00 0.00 25.00 0.00 0.00 0.00 25.50 0.00 0.00 0.00 26.00 0.00 0.00 0.00 ■ Attachment F Maintenance Agreements ,9°5.°°xe';`age CtchogF-1 Attachment F—Maintenance Agreements n �e�repmtsVSW PPPVSW PPP\5 WP PP Maunalldoc ■ Attachment G Operations & Maintenance Manual P.\29305.00 Heritage FormsCntchog,,e\reports\SW PPP\SW PPP\5 WP PP M-12.doe Operations & Maintenance Plan The Site Operator is responsible for the operation and maintenance of the installed stormwater management practices to ensure proper functionality throughout the life of the system. Regular maintenance of stormwater management practices is important for flood control, structural integrity, and water quality. The following lists all procedures for inspection and maintenance for post-development Stormwater Management Practices: Drvwell and Catch Basin Svstem: Inspection Requirements: Drainage structures should be inspected at least once per year to ensure proper operation. Common system deficiencies which may occur over time,include but are not limited to: > Excessive debris, silt or sediment build-up inside of structure/piping > Cracks or other damage to the structure > Collapsed or blocked pipes > Excessive ponding around leeching structures Maintenance Requirements: Should problems be encountered during inspection,maintenance is required as follows: > Debris, silt and sediment buildup shall be removed from structures. > Pipes shall be cleaned of debris and/or sediment. > Repair to existing structures/piping. The Site Operator is required to maintain a log of all inspections and/or maintenance that is performed on the system. The log shall include all pertinent information necessary to record the results of the inspections as well as any necessary repair to the system. Drainne Reserve Areas: Inspection Requirements: Drainage Reserve Areas should be inspected at least once per year to ensure proper operation. The Owner shall install a sediment marker at each end of the DRA to monitor sediment levels. Common system deficiencies which may occur over time,include but are not limited to: > Excessive debris, silt or sediment build-up at bottom of DRA > Sediment build-up/washout of rip rap apron at infall pipe. > Collapsed,cracked or blocked pipes or flared end section. Maintenance Requirements: > The vegetation along the surface of the infiltration basin should be maintained in good condition.Any bare spots should be revegetated immediately. > Vehicles should not be parked or driven on a drainage reserve area, and care should be taken to avoid excessive compaction by mowers. > Mow only as appropriate for vegetative cover species.Mowing twice a year,once in June and again in September,is general satisfactory. > Remove sediment from basin accumulations.Restore original cross section and infiltration rate.Dispose of sediment properly off site. Landscape Areas: Inspection Requirements: Landscaped areas should be inspected at least twice per year to ensure proper operation. Common system deficiencies which may occur over time,include but are not limited to: > Dead plants or turf areas resulting from drought or illness. > Erosion from surface runoff. > Sediment build-up in low areas. Maintenance Requirements: > Re-seeding/watering of dead lawn areas. > Removal of sediment build-up. > Re-grading and re-establishment of landscaping in eroded areas. > Mowing and general landscape maintenance as required. Parkins Areas: Inspection Requirements: Parking and paved areas should be inspected at least twice per year to ensure proper operation. Common system deficiencies which may occur over time,include but are not limited to: > Broken pavement or sink holes around drainage inlets. > Evidence of ponding in intermittent low areas. > Sand and Salt build up from snow operations. Maintenance Requirements: > Repairing of any damaged pavement or low areas. > Sweeping and removing any sediment or debris on the pavement as necessary. The Site Operator is required to maintain a log of all inspections and/or maintenance that is performed on the system. The log shall include all pertinent information necessary to record the results of the inspections as well as any necessary repair to the system. ■ Forms P.\29305.00 Heritage FormsCntchog,,e\reports\SW PPP\SW PPP\5 WP PP Maunal2.doe CERTIFICATION OF PROJECT CONSTRUCTION CONTRACTORS The Heritage at Cutchogue North side of the Griffing Street and School House Lane Intersection Cutchogue,NY The following certification shall be signed by each contractor and subcontractor responsible for on-site activities, or any other subcontractor who will perform any action that may reasonably be expected to cause or have the potential to cause pollution of the waters of New York. All contractors shall provide a representative who has received proper erosion control training. "I hereby certify that I understand and agree to comply with the terms and conditions of the SWPPP and agree to implement any corrective actions identified by the qualified inspector during a site inspection. I also understand that the owner or operator must comply with the terms and conditions of the most current version of the New York State Pollutant Discharge Elimination System("SPDES")general permit for storm water discharges from construction activities and that it is unlawful for any person to cause or contribute to a violation of water quality standards. Furthermore,I understand that certifying false,incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal,civil and/or administrative proceedings." Owner/Operator Trained Contractor Trained Subcontractor Representative (If Necessary) Name Name Name Signature and Date Signature and Date Signature and Date Title/Responsible For Title/Responsible For Title/Responsible For Company and Address Company and Address Company and Address Telephone Number Telephone Number Telephone Number I 0644089821 NOTICE OF INTENT New York State Department of Environmental Conservation Division of Water 625 Broadway, 4th Floor NYR EEEEE0 Albany, New York 12233-3505 cfor DEC use only) Stormwat r Discharges Associated with Construction Activity Under State ----------------------------------------- Pollutant --------------------------------------.Fo.l ut.ant. Discharge Elimination System (SFDFS) General F rm.it # GF--0--15--002 All sections must be completed unless otherwise noted. Failure to complete all items may result in this form being returned to you, thereby delaying your coverage under this General Permit. Applicants must read and understand the conditions of the permit and prepare a Stormwater Pollution Prevention Plan prior to submitting this NOI. Applicants are responsible for identifying and obtaining other DEC permits that may be required. - IMPORTANT- RETURN THIS FORM TO THE ADDRESS ABOVE OWNER/OPERATOR MUST SIGN FORM ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Owner/Operator Information Owner/Operator (Company Name/Private Owner Name/Municipality Name) T h e H e r i t a g e a t C u t c h o g u e L L C Owner/Operator Contact Person Last Name (NOT CONSULTANT) R i m l a n d Owner/Operator Contact Person First Name J e f f r e y Owner/Operator Mailing Address 1 7 2 1 - D N o r t h O c e a n A v e n u e City M e d f o r d State Zip N Y 1 1 7 6 3 - � Phone (Owner/Operator) Fax (Owner/Operator) 5 7 3 0 - � - � Email (Owner/Operator) J R i m 1 and @ n o r t h o p c o m FED TAX ID m - (not required for individuals) LPage 1 of 14 I 6401089828 Project Site Information Project/Site Name T h e H e r i t a g e a t C u t c h o g u e Street Address (NOT P.O. BOX) N o r t h s i d e o f S c h o o l h o u s e L a n e Side of Street 0 North O South O East O West City/Town/Village (THAT ISSUES BUILDING PERMIT) T o w n o f S o u t h o l d State Zip County DEC Region N Y 1 1 9 3N - S u f f o l k Name of Nearest Cross Street G r i f f i n g S t r e e t Distance to Nearest Cross Street (Feet) Project In Relation to Cross Street 0 * North O South O East O West Tax Map Numbers Tax Map Numbers Section-Block-Parcel 1 0 0 0 - 1 0 2 - 1 - 3 3 3 1. Provide the Geographic Coordinates for the project site in NYTM Units. To do this you must go to the NYSDEC Stormwater Interactive Map on the DEC website at: www.dec.ny.gov/imsmaps/sto=water/viewer.htm Zoom into your Project Location such that you can accurately click on the centroid of your site. Once you have located your project site, go to the tool boxes on the top and choose "i" (identify) . Then click on the center of your site and a new window containing the X. Y coordinates in UTM will pop up. Transcribe these coordinates into the boxes below. For problems with the interactive map use the help function. X Coordinates (Easting) Y Coordinates (Northing) 7 1 0 8 3 9 4 5 4 3 4 4 1 2. What is the nature of this construction project? ® New Construction O Redevelopment with increase in impervious area O Redevelopment with no increase in impervious area Page 2 of 14 I 4107089829 3. Select the predominant land use for both pre and post development conditions. SELECT ONLY ONE CHOICE FOR EACH Pre-Development Post-Development Existing Land Use Future Land Use O FOREST O SINGLE FAMILY HOME Number of Lots PASTURE/OPEN LAND U SINGLE FAMILY SUBDIVISION U CULTIVATED LAND U TOWN HOME RESIDENTIAL U SINGLE FAMILY HOME ® MULTIFAMILY RESIDENTIAL U SINGLE FAMILY SUBDIVISION U INSTITUTIONAL/SCHOOL U TOWN HOME RESIDENTIAL U INDUSTRIAL U MULTIFAMILY RESIDENTIAL U COMMERCIAL U INSTITUTIONAL/SCHOOL U MUNICIPAL U INDUSTRIAL U ROAD/HIGHWAY O COMMERCIAL U RECREATIONAL/SPORTS FIELD U ROAD/HIGHWAY U BIKE PATH/TRAIL O RECREATIONAL/SPORTS FIELD O LINEAR UTILITY (water, sewer, gas, etc. ) U BIKE PATH/TRAIL U PARKING LOT U LINEAR UTILITY U CLEARING/GRADING ONLY U PARKING LOT O DEMOLITION, NO REDEVELOPMENT O OTHER O WELL DRILLING ACTIVITY * (Oil, Gas, etc. ) O OTHER *Note: for gas well drilling, non-high volume hydraulic fractured wells only 4. In accordance with the larger common plan of development or sale, enter the total project site area; the total area to be disturbed; existing impervious area to be disturbed (for redevelopment activities) ; and the future impervious area constructed within the disturbed area. (Round to the nearest tenth of an acre. ) Future Impervious Total Site Total Area To Existing Impervious Area Within Area Be Disturbed Area To Be Disturbed Disturbed Area 4 5 .[ �0 ,F0 1 9 5. Do you plan to disturb more than 5 acres of soil at any one time? ® Yes O No ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 6. Indicate the percentage of each Hydrologic Soil Group(HSG) at the site. A B C D 0 7. Is this a phased project? O Yes ® No ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Start Date End Date 8. Enter the planned start and end � / � / � _ � / M / dates of the disturbance 0 3 0 1 2 0 1 7 0 8 3 0 2 FO F2 1 activities. LPage 3 of 14 F8600089821 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- r9. Identify the nearest surface waterbody(ies) to which construction site runoff will N,,e discharge. W � i � C � k �h � a �m � C� r� e� e k � 9a. Type of waterbody identified in Question 9? 0 Wetland State Jurisdiction On Site (Answer 9b) 0 Wetland State Jurisdiction Off Site 0 Wetland Federal Jurisdiction On Site (Answer 9b) 0 Wetland Federal Jurisdiction Off Site 0 Stream Creek On Site Stream Creek Off Site 0 River On Site 9b. How was the wetland identified? ORiver Off Site 0 Lake On Site O Regulatory Map OLake Off Site ODelineated by Consultant () Other Type On Site ODelineated by Army Corps of Engineers 0Other Type Off Site 0Other (identify) 10. Has the surface waterbody(ies) in question 9 been identified as a 0 Yes 0 No 303 (d) segment in Appendix E of GP-0-15-002? 11. Is this project located in one of the Watersheds identified in Appendix C of GP-0-15-002? 0 Yes No 12. Is the project located in one of the watershed areas associated with AA and AA-S classified 0 Yes 0 No waters? If no, skip question 13. -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 13. Does this construction activity disturb land with no existing impervious cover and where the Soil Slope Phase is 0 Yes 0 No identified as an E or F on the USDA Soil Survey? If Yes, what is the acreage to be disturbed? 14. Will the project disturb soils within a State regulated wetland or the protected 100 foot adjacent 0 Yes 0 No area? LPage 4 of 14 I 6403089820 15. Does the site runoff enter a separate storm sewer system (including roadside drains, swales, ditches, 0 Yes O No O Unknown culverts, etc) ? 16. What is the name of the municipality/entity that owns the separate storm sewer system? T o w n o f S o u t h o l d ------------- 17. Does any runoff from the site enter a sewer classified O Yes ® No O Unknown as a Combined Sewer? 18. Will future use of this site be an agricultural property as defined by the NYS Agriculture and Markets Law? O Yes 0 No 19. Is this property owned by a state authority, state agency, federal government or local government? O Yes No 20. Is this a remediation project being done under a Department approved work plan? (i.e. CERCLA, RCRA, Voluntary Cleanup O Yes © No Agreement, etc. ) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 21. Has the required Erosion and Sediment Control component of the SWPPP been developed in conformance with the current NYS 0 Yes O No Standards and Specifications for Erosion and Sediment Control (aka Blue Book) ? 22. Does this construction activity require the development of a SWPPP that includes the post-construction stormwater management practice component (i.e. Runoff Reduction, Water Quality and 0 Yes O No Quantity Control practices/techniques) ? If No, skip questions 23 and 27-39. 23. Has the post-construction stormwater management practice component of the SWPPP been developed in conformance with the current NYS 9 Yes O No Stormwater Management Design Manual? Page 5 of 14 I 0251089825 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 24. The Stormwater Pollution Prevention Plan (SWPPP) was prepared by: ® Professional Engineer (P.E.) O Soil and Water Conservation District (SWCD) O Registered Landscape Architect (R.L.A) O Certified Professional in Erosion and Sediment Control (CPESC) O Owner/Operator O Other SWPPP Preparer V H B E n g i n e e r i n g S u r v e y i n g a n# L A P C Contact Name (Last, Space, First) L a i n o A n g e l o Mailing Address 1 0 0 M o t o r P a r k w a y S u i t e 1 3 5 City H a u p p a u g e State Zip N Y 1 1 7 8 8 - � Phone Fax 25 4 5 Email SWPPP Preparer Certification I hereby certify that the Stormwater Pollution Prevention Plan (SWPPP) for this project has been prepared in accordance with the terms and conditions of the GP-0-15-002. Furthermore, I understand that certifying false, incorrect or inaccurate information is a violation of this permit and the laws of the State of New York and could subject me to criminal, civil and/or administrative proceedings. First Name MI A n g e 1 0 Last Name L a i n o Signature Date 0 1 0 5 0 2 0 1 7 LPage 6 of 14 F0005089822 25. Has a construction sequence schedule for the planned management -------------------------- practicesbeen prepared?---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------0 Yes-----------0--N-o----------------- 26. Select all of the erosion and sediment control practices that will be employed on the project site: Temporary Structural Vegetative Measures 0 Check Dams 0 Brush Matting 0 Construction Road Stabilization 0 Dune Stabilization '4 Dust Control 0 Grassed Waterway 0 Earth Dike 0 Mulching 0 Level Spreader 0 Protecting Vegetation 0 Perimeter Dike/Swale 0 Recreation Area Improvement 0 Pipe Slope Drain 0 Seeding 0 Portable Sediment Tank 0 Sodding 0 Rock Dam 0 Straw/Hay Bale Dike � Sediment Basin 0 Streambank Protection 14 Sediment Traps 0 Temporary Swale 14 Silt Fence 0 Topsoiling 14 Stabilized Construction Entrance 0 Vegetating Waterways 14 Storm Drain Inlet Protection Permanent Structural • Straw/Hay Bale Dike • Temporary Access Waterway Crossing 0 Debris Basin • Temporary Stormdrain Diversion 0 Diversion • Temporary Swale 0 Grade Stabilization Structure • Turbidity Curtain � Land Grading 0 Water bars 0 Lined Waterway (Rock) 0 Paved Channel (Concrete) Biotechnical 0 Paved Flume • Brush Matting 0 Retaining Wall • Wattling 0 Riprap Slope Protection 0 Rock Outlet Protection Other 0 Streambank Protection Page 7 of 14 I 0182089828 Post-construction Stormwater Management Practice (SMP) Requirements Important: Completion of Questions 27-39 is not required if response to Question 22 is No. 27. Identify all site planning practices that were used to prepare the final site plan/layout for the project. Preservation of Undisturbed Areas Preservation of Buffers Reduction of Clearing and Grading O Locating Development in Less Sensitive Areas O Roadway Reduction O Sidewalk Reduction O Driveway Reduction O Cul-de-sac Reduction O Building Footprint Reduction O Parking Reduction 27a. Indicate which of the following soil restoration criteria was used to address the requirements in Section 5.1. 6 ("Soil Restoration") of the Design Manual (2010 version) . All disturbed areas will be restored in accordance with the Soil Restoration requirements in Table 5.3 of the Design Manual (see page 5-22) . O Compacted areas were considered as impervious cover when calculating the WQv Required, and the compacted areas were assigned a post-construction Hydrologic Soil Group (HSG) designation that is one level less permeable than existing conditions for the hydrology analysis. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 28. Provide the total Water Quality Volume (WQv) required for this project (based on final site plan/layout) . Total WQv Required 21. 4 4 5 acre-feet 29. Identify the RR techniques (Area Reduction) , RR techniques (Volume Reduction) and Standard SMPs with RRv Capacity in Table 1 (See Page 9) that were used to reduce the Total WQv Required(#28) . Also, provide in Table 1 the total impervious area that contributes runoff to each technique/practice selected. For the Area Reduction Techniques, provide the total contributing area (includes pervious area) and, if applicable, the total impervious area that contributes runoff to the technique/practice. Note: Redevelopment projects shall use Tables 1 and 2 to identify the SMPs used to treat and/or reduce the WQv required. If runoff reduction techniques will not be used to reduce the required WQv, skip to question 33a after identifying the SMPs. Page 8 of 14 I 7738089822 Table 1 - Runoff Reduction (RR) Techniques and Standard Stormwater Management Practices (SMPs) Total Contributing Total Contributing RR Techniques (Area Reduction) Area (acres) Impervious Area(acres) O Conservation of Natural Areas (RR-1) • • • and/or O SheetflowBuffers/Filters to Riparian �'� Buffers/Filters Strips (RR-2) , , , , , , , , , , and/or O Tree Planting/Tree Pit (RR-3) • • • • • • • • • • and/or O Disconnection of Rooftop Runoff (RR-4) . . and/or RR Techniques (Volume Reduction) O Vegetated Swale (RR-5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U Rain Garden (RR-6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Stormwater Planter (RR-7) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • O Rain Barrel/Cistern (RR-8) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • U Porous Pavement (RR-9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U Green Roof (RR-10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Standard SMPs with RRv Capacity O Infiltration Trench (I-1) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 4 Infiltration Basin (I-2) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • . . . . . . . . 1 3 6 6 Dry Well (I-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5 1 O Underground Infiltration System (I-4) • • • • • • • • • • • • • • • • • • • • • • • • U Bioretention (F-5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Dry Swale (0-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Standard SMPs O Micropool Extended Detention (P-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Wet Pond (P-2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Wet Extended Detention (P-3) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • O Multiple Pond System (P-4) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • O Pocket Pond (P-5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Surface Sand Filter (F-1) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • O Underground Sand Filter (F-2) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • O Perimeter Sand Filter (F-3) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • U Organic Filter (F-4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Shallow Wetland (W-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Extended Detention Wetland (W-2) , , , , , , , , , , , , , , , , , , , , , , , , , , , , , O Pond/Wetland System (W-3) , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , O Pocket Wetland (W-4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Wet Swale (0-2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LPage 9 of 14 F0762089822 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Table 2 - Alternative SMPs (DO NOT INCLUDE PRACTICES BEING USED FOR PRETREATMENT ONLY) Total Contributing Alternative SMP Impervious Area(acres) 0 Hydrodynamic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 Wet Vault 0 Media Filter 0 Other Provide the name and manufacturer of the Alternative SMPs (i.e. proprietary practice (s) ) being used for WQv treatment. Name Manufacturer Note: Redevelopment projects which do not use RR techniques, shall use questions 28, 29, 33 and 33a to provide SMPs used, total WQv required and total WQv provided for the project. 30. Indicate the Total RRv provided by the RR techniques (Area/Volume Reduction) and Standard SMPs with RRv capacity identified in question 29. Total RRv provided acre-feet ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 31. Is the Total RRv provided (#30) greater than or equal to the total WQv required (#28) . Yes ONo If Yes, go to question 36. If No, go to question 32. 32. Provide the Minimum RRv required based on HSG. [Minimum RRv Required = (P) (0. 95) (Ai) /12, Ai=(S) (Aic) ] Minimum RRv Required acre-feet ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 32a. Is the Total RRv provided (#30) greater than or equal to the Minimum RRv Required (#32) ? O Yes No If Yes, go to question 33. Note: Use the space provided in question #39 to summarize the specific site limitations and justification for not reducing 1000 of WQv required (#28) . A detailed evaluation of the specific site limitations and justification for not reducing 1000 of the WQv required (#28) must also be included in the SWPPP. If No, sizing criteria has not been met, so NOI can not be processed. SWPPP preparer must modify design to meet sizing criteria. Page 10 of 14 F1766089827 33. Identify the Standard SMPs in Table 1 and, if applicable, the Alternative SMPs in Table 2 that were used to treat the remaining total WQv(=Total WQv Required in 28 - Total RRv Provided in 30) . Also, provide in Table 1 and 2 the total impervious area that contributes runoff to each practice selected. Note: Use Tables 1 and 2 to identify the SMPs used on Redevelopment projects. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 33a. Indicate the Total WQv provided (i.e. WQv treated) by the SMPs identified in question #33 and Standard SMPs with RRv Capacity identified in question 29. WQv Provided acre-feet Note: For the standard SMPs with RRv capacity, the WQv provided by each practice the WQv calculated using the contributing drainage area to the practice RRv provided by the practice. (See Table 3.5 in Design Manual) 34. Provide the sum of the Total RRv provided (#30) and the WQv provided (#33a) . ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 35. Is the sum of the RRv provided (#30) and the WQv provided (#33a) greater than or equal to the total WQv required (#28) ? 0 Yes 0 No If Yes, go to question 36. If No, sizing criteria has not been met, so NOI can not be processed. SWPPP preparer must modify design to meet sizing criteria. 36. Provide the total Channel Protection Storage Volume (CPv) required and provided or select waiver (36a) , if applicable. CPv Required CPv Provided acre-feet acre-feet ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 36a. The need to provide channel protection has been waived because: OSite discharges directly to tidal waters or a fifth order or larger stream. 0 Reduction of the total CPv is achieved on site through runoff reduction techniques or infiltration systems. 37. Provide the Overbank Flood (Qp) and Extreme Flood (Qf) control criteria or select waiver (37a) , if applicable. Total Overbank Flood Control Criteria (Qp) Pre-Development Post-development CFS CFS Total Extreme Flood Control Criteria (Qf) Pre-Development Post-development CFS CFS Page 11 of 14 F1310089822 ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 37a. The need to meet the Qp and Qf criteria has been waived because: 19 Site discharges directly to tidal waters or a fifth order or larger stream. 0 Downstream analysis reveals that the Qp and Qf controls are not required 38. Has a long term Operation and Maintenance Plan for the post-construction stormwater management practice (s) been 0 Yes 0 No developed? If Yes, Identify the entity responsible for the long term Operation and Maintenance � T� h� e� �H � e� r� i � t a � g � e� a � t � � C �u t � C �h � o g �u � e � , � L � L � C � ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 39. Use this space to summarize the specific site limitations and justification for not reducing 1000 of WQv required(#28) . (See question 32a) This space can also be used for other pertinent project information. This project reduces the WQv 100%. Page 12 of 14 I 4285089826 40. Identify other DEC permits, existing and new, that are required for this project/facility. O Air Pollution Control O Coastal Erosion O Hazardous Waste O Long Island Wells O Mined Land Reclamation O Solid Waste O Navigable Waters Protection / Article 15 O Water Quality Certificate O Dam Safety O Water Supply O Freshwater Wetlands/Article 24 O Tidal Wetlands O Wild, Scenic and Recreational Rivers O Stream Bed or Bank Protection / Article 15 O Endangered or Threatened Species (Incidental Take Permit) O Individual SPDES O SPDES Multi-Sector GP N Y R O Other None 41. Does this project require a US Army Corps of Engineers Wetland Permit? .❑ 0 Yes No If Yes, Indicate Size of Impact. 42. Is this project subject to the requirements of a regulated, traditional land use control MS4? ® Yes O No (If No, skip question 43) 43. Has the "MS4 SWPPP Acceptance" form been signed by the principal executive officer or ranking elected official and submitted along ® Yes O No with this NOI? 44. If this NOI is being submitted for the purpose of continuing or transferring coverage under a general permit for stormwater runoff from construction activities, please indicate the former SPDES number assigned. N Y R LPage 13 of 14 I 3547089826 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Owner/Operator Certification I have read or been advised of the permit conditions and believe that I understand them. I also understand that, under the terms of the permit, there may be reporting requirements. I hereby certify that this document and the corresponding documents were prepared under my direction or supervision. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. I further understand that coverage under the general permit will be identified in the acknowledgment that I will receive as a result of submitting this NOI and can be as long as sixty (60) business days as provided for in the general permit. I also understand that, by submitting this NOI, I am acknowledging that the SWPPP has been developed and will be implemented as the first element of construction, and agreeing to comply with all the terms and conditions of the general permit for which this NOI is being submitted. Print First Name MI J e f f r e y F1 Print Last Name R i m l a n d Owner/Operator Signature Date Page 14 of 14 I 0644089821 NOTICE OF INTENT New York State Department of Environmental Conservation _ Division of Water _ 625 Broadway, 4th Floor NYR EEEEE0 Albany, New York 12233-3505 (for DEC use only' Stormwater Discharges Associated with Construction Activity Under Stat Pollutant Discharge Elimination System (SPDES) General Permit # GP-0-15-002 All sections must be completed unless otherwise noted. Failure to complete all items may result in this form being returned to you, thereby delaying your coverage under this General Permit. Applicants must read and understand the conditions of the permit and prepare a Stormwater Pollution Prevention Plan prior to submitting this NOI. Applicants are responsible for identifying and obtaining other DEC permits that may be required. - IMPORTANT- RETURN THIS FORM TO THE ADDRESS ABOVE OWNER/OPERATOR MUST SIGN FORM --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Owner/Operator Information Owner/Operator (Company Name/Private Owner Name/Municipality Name) Owner/Operator Contact Person Last Name (NOT CONSULTANT) Owner/Operator Contact Person First Name Owner/Operator Mailing Address City State Zip m Phone (Owner/Operator) Fax (Owner/Operator) Email (Owner/Operator) FED TAX ID m - (not required for individuals) LPage 1 of 14 I 6401089828 Project Site Information Project/Site Name Street Address (NOT P.O. BOX) Side of Street O North O South O East O West City/Town/Village (THAT ISSUES BUILDING PERMIT) N ye Zip - � County DEC Region Name of Nearest Cross Street Distance to Nearest Cross Street (Feet) Project In Relation to Cross Street O North O South O East O West Tax Map Numbers Tax Map Numbers Section-Block-Parcel 1. Provide the Geographic Coordinates for the project site in NYTM Units. To do this you must go to the NYSDEC Stormwater Interactive Map on the DEC website at: www.dec.ny.gov/imsmaps/sto=water/viewer.htm Zoom into your Project Location such that you can accurately click on the centroid of your site. Once you have located your project site, go to the tool boxes on the top and choose "i" (identify) . Then click on the center of your site and a new window containing the X. Y coordinates in UTM will pop up. Transcribe these coordinates into the boxes below. For problems with the interactive map use the help function. X Coordinates (Easting) Y Coordinates (Northing) 4 2. What is the nature of this construction project? O New Construction O Redevelopment with increase in impervious area O Redevelopment with no increase in impervious area Page 2 of 14 I 4107089829 3. Select the predominant land use for both pre and post development conditions. SELECT ONLY ONE CHOICE FOR EACH Pre-Development Post-Development Existing Land Use Future Land Use O FOREST O SINGLE FAMILY HOME Number of Lots U PASTURE/OPEN LAND U SINGLE FAMILY SUBDIVISION U CULTIVATED LAND U TOWN HOME RESIDENTIAL U SINGLE FAMILY HOME U MULTIFAMILY RESIDENTIAL U SINGLE FAMILY SUBDIVISION U INSTITUTIONAL/SCHOOL U TOWN HOME RESIDENTIAL U INDUSTRIAL U MULTIFAMILY RESIDENTIAL U COMMERCIAL () INSTITUTIONAL/SCHOOL U MUNICIPAL U INDUSTRIAL U ROAD/HIGHWAY O COMMERCIAL U RECREATIONAL/SPORTS FIELD U ROAD/HIGHWAY U BIKE PATH/TRAIL O RECREATIONAL/SPORTS FIELD O LINEAR UTILITY (water, sewer, gas, etc. ) U BIKE PATH/TRAIL U PARKING LOT U LINEAR UTILITY U CLEARING/GRADING ONLY U PARKING LOT O DEMOLITION, NO REDEVELOPMENT O OTHER O WELL DRILLING ACTIVITY * (Oil, Gas, etc. ) O OTHER *Note: for gas well drilling, non-high volume hydraulic fractured wells only 4. In accordance with the larger common plan of development or sale, enter the total project site area; the total area to be disturbed; existing impervious area to be disturbed (for redevelopment activities) ; and the future impervious area constructed within the disturbed area. (Round to the nearest tenth of an acre.) Future Impervious Total Site Total Area To Existing Impervious Area Within Area Be Disturbed Area To Be Disturbed Disturbed Area 5. Do you plan to disturb more than 5 acres of soil at any one time? O Yes O No ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 6. Indicate the percentage of each Hydrologic Soil Group(HSG) at the site. A B C D 0 7. Is this a phased project? O Yes O No ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Start Date End Date 8. Enter the planned start and end m / m / m / m / dates of the disturbance activities. LPage 3 of 14 I 8600089821 rN,,e . Identify the nearest surface waterbody(ies) to which construction site runoff will discharge. 9a. Type of waterbody identified in Question 9? O Wetland / State Jurisdiction On Site (Answer 9b) O Wetland / State Jurisdiction Off Site O Wetland / Federal Jurisdiction On Site (Answer 9b) O Wetland / Federal Jurisdiction Off Site O Stream / Creek On Site O Stream / Creek Off Site O River On Site 9b. How was the wetland identified? O River Off Site O Lake On Site O Regulatory Map O Lake Off Site O Delineated by Consultant O Other Type On Site O Delineated by Army Corps of Engineers O Other Type Off Site O Other (identify) 10. Has the surface waterbody(ies) in question 9 been identified as a O Yes O No 303 (d) segment in Appendix E of GP-0-15-002? 11. Is this project located in one of the Watersheds identified in Appendix C of GP-0-15-002? O Yes O No 12. Is the project located in one of the watershed areas associated with AA and AA-S classified O Yes O No waters? If no, skip question 13. -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 13. Does this construction activity disturb land with no existing impervious cover and where the Soil Slope Phase is O Yes O No identified as an E or F on the USDA Soil Survey? If Yes, what is the acreage to be disturbed? 14. Will the project disturb soils within a State regulated wetland or the protected 100 foot adjacent O Yes O No area? LPage 4 of 14 I 6403089820 ----------------- 15. Does the site runoff enter a separate storm sewer system (including roadside drains, swales, ditches, 0 Yes O No O Unknown culverts, etc) ? 16. What is the name of the municipality/entity that owns the separate storm sewer system? 17. Does any runoff from the site enter a sewer classified O Yes O No O Unknown as a Combined Sewer? 18. Will future use of this site be an agricultural property as defined by the NYS Agriculture and Markets Law? O Yes O No 19. Is this property owned by a state authority, state agency, O Yes O No federal government or local government? 20. Is this a remediation project being done under a Department approved work plan? (i.e. CERCLA, RCRA, Voluntary Cleanup O Yes O No Agreement, etc. ) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 21. Has the required Erosion and Sediment Control component of the SWPPP been developed in conformance with the current NYS O Yes O No Standards and Specifications for Erosion and Sediment Control (aka Blue Book) ? 22. Does this construction activity require the development of a SWPPP that includes the post-construction stormwater management practice component (i.e. Runoff Reduction, Water Quality and O Yes O No Quantity Control practices/techniques) ? If No, skip questions 23 and 27-39. 23. Has the post-construction stormwater management practice component of the SWPPP been developed in conformance with the current NYS O Yes O No Stormwater Management Design Manual? Page 5 of 14 I 0251089825 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 24. The Stormwater Pollution Prevention Plan (SWPPP) was prepared by: O Professional Engineer (P.E.) O Soil and Water Conservation District (SWCD) O Registered Landscape Architect (R.L.A) O Certified Professional in Erosion and Sediment Control (CPESC) O Owner/Operator O Other SWPPP Preparer Contact Name (Last, Space, First) Mailing Address City State Zip ELI H LI Phone Fax Email SWPPP Preparer Certification I hereby certify that the Stormwater Pollution Prevention Plan (SWPPP) for this project has been prepared in accordance with the terms and conditions of the GP-0-15-002. Furthermore, I understand that certifying false, incorrect or inaccurate information is a violation of this permit and the laws of the State of New York and could subject me to criminal, civil and/or administrative proceedings. First Name MI LE F1 Last Name LL Signature Date m / Ell LPage 6 of 14 I 0005089822 25. Has a construction sequence schedule for the planned management practices been prepared O Yes 0 No 26. Select all of the erosion and sediment control practices that will be employed on the project site: Temporary Structural Vegetative Measures O Check Dams O Brush Matting O Construction Road Stabilization O Dune Stabilization O Dust Control O Grassed Waterway O Earth Dike O Mulching O Level Spreader O Protecting Vegetation O Perimeter Dike/Swale O Recreation Area Improvement O Pipe Slope Drain O Seeding O Portable Sediment Tank O Sodding O Rock Dam O Straw/Hay Bale Dike O Sediment Basin O Streambank Protection O Sediment Traps O Temporary Swale O Silt Fence O Topsoiling O Stabilized Construction Entrance O Vegetating Waterways O Storm Drain Inlet Protection Permanent Structural O Straw/Hay Bale Dike O Temporary Access Waterway Crossing U Debris Basin O Temporary Stormdrain Diversion U Diversion O Temporary Swale O Grade Stabilization Structure O Turbidity Curtain O Land Grading O Water bars O Lined Waterway (Rock) O Paved Channel (Concrete) Biotechnical U Paved Flume O Brush Matting O Retaining Wall O Wattling O Riprap Slope Protection O Rock Outlet Protection Other O Streambank Protection Page 7 of 14 I 0182089828 Post-construction Stormwater Management Practice (SMP) Requirements Important: Completion of Questions 27-39 is not required if response to Question 22 is No. 27. Identify all site planning practices that were used to prepare the final site plan/layout for the project. O Preservation of Undisturbed Areas O Preservation of Buffers O Reduction of Clearing and Grading O Locating Development in Less Sensitive Areas O Roadway Reduction O Sidewalk Reduction O Driveway Reduction O Cul-de-sac Reduction O Building Footprint Reduction O Parking Reduction 27a. Indicate which of the following soil restoration criteria was used to address the requirements in Section 5.1.6 ("Soil Restoration") of the Design Manual (2010 version) . O All disturbed areas will be restored in accordance with the Soil Restoration requirements in Table 5.3 of the Design Manual (see page 5-22) . O Compacted areas were considered as impervious cover when calculating the WQv Required, and the compacted areas were assigned a post-construction Hydrologic Soil Group (HSG) designation that is one level less permeable than existing conditions for the hydrology analysis. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 28. Provide the total Water Quality Volume (WQv) required for this project (based on final site plan/layout) . Total WQv Required �.�acre-feet 29. Identify the RR techniques (Area Reduction) , RR techniques (Volume Reduction) and Standard SMPs with RRv Capacity in Table 1 (See Page 9) that were used to reduce the Total WQv Required(#28) . Also, provide in Table 1 the total impervious area that contributes runoff to each technique/practice selected. For the Area Reduction Techniques, provide the total contributing area (includes pervious area) and, if applicable, the total impervious area that contributes runoff to the technique/practice. Note: Redevelopment projects shall use Tables 1 and 2 to identify the SMPs used to treat and/or reduce the WQv required. If runoff reduction techniques will not be used to reduce the required WQv, skip to question 33a after identifying the SMPs. Page 8 of 14 I 7738089822 Table 1 - Runoff Reduction (RR) Techniques and Standard Stormwater Management Practices (SMPs) Total Contributing Total Contributing RR Techniques (Area Reduction) Area (acres) Impervious Area(acres) O Conservation of Natural Areas (RR-1) . . . �•� and/or �•� O SheetflowBuffers/Filters to Riparian �'� Buffers/Filters Strips (RR-2) , , , , , , , , , , and/or O Tree Planting/Tree Pit (RR-3) , , , , , , , , , , and/or O Disconnection of Rooftop Runoff (RR-4) . . and/or RR Techniques (Volume Reduction) O Vegetated Swale (RR-5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U Rain Garden (RR-6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Stormwater Planter (RR-7) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • O Rain Barrel/Cistern (RR-8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Porous Pavement (RR-9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U Green Roof (RR-10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . �•� Standard SMPs with RRv Capacity O Infiltration Trench (I-1) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • U Infiltration Basin (I-2) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • ODry Well (I-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Underground Infiltration System (I-4) • • • • • • • • • • • • • • • • • • • • • • • • U Bioretention (F-5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Dry Swale (0-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Standard SMPs U Micropool Extended Detention (P-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . U Wet Pond (P-2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Wet Extended Detention (P-3) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • O Multiple Pond System (P-4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Pocket Pond (P-5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Surface Sand Filter (F-1) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • O Underground Sand Filter (F-2) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • O Perimeter Sand Filter (F-3) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • U Organic Filter (F-4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Shallow Wetland (W-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Extended Detention Wetland (W-2) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • O Pond/Wetland System (W-3) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • O Pocket Wetland (W-4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Wet Swale (0-2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LPage 9 of 14 I 0762089822 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Table 2 - Alternative SMPs (DO NOT INCLUDE PRACTICES BEING USED FOR PRETREATMENT ONLY) Total Contributing Alternative SMP Impervious Area(acres) O Hydrodynamic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OWet Vault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Media Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Other Provide the name and manufacturer of the Alternative SMPs (i.e. proprietary practice (s) ) being used for WQv treatment. Name Manufacturer Note: Redevelopment projects which do not use RR techniques, shall use questions 28, 29, 33 and 33a to provide SMPs used, total WQv required and total WQv provided for the project. 30. Indicate the Total RRv provided by the RR techniques (Area/Volume Reduction) and Standard SMPs with RRv capacity identified in question 29. Total RRv provided acre-feet ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 31. Is the Total RRv provided (#30) greater than or equal to the total WQv required (#28) . O Yes O No If Yes, go to question 36. If No, go to question 32. 32. Provide the Minimum RRv required based on HSG. [Minimum RRv Required = (P) (0. 95) (Ai) /12, Ai=(S) (Aic) ] Minimum RRv Required acre-feet ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 32a. Is the Total RRv provided (#30) greater than or equal to the Minimum RRv Required (#32) ? O Yes O No If Yes, go to question 33. Note: Use the space provided in question #39 to summarize the specific site limitations and justification for not reducing 1000 of WQv required (#28) . A detailed evaluation of the specific site limitations and justification for not reducing 1000 of the WQv required (#28) must also be included in the SWPPP. If No, sizing criteria has not been met, so NOI can not be processed. SWPPP preparer must modify design to meet sizing criteria. Page 10 of 14 I 1766089827 33. Identify the Standard SMPs in Table I and, if applicable, the Alternative SMPs in Table 2 that were used to treat the remaining total WQv(=Total WQv Required in 28 - Total RRv Provided in 30) . Also, provide in Table I and 2 the total impervious area that contributes runoff to each practice selected. Note: Use Tables I and 2 to identify the SMPs used on Redevelopment projects. 33a. Indicate the Total WQv provided (i.e. WQv treated) by the SMPs identified in question #33 and Standard SMPs with RRv Capacity identified in question 29. WQv Provided acre-feet Note: For the standard SMPs with RRv capacity, the WQv provided by each practice the WQv calculated using the contributing drainage area to the practice RRv provided by the practice. (See Table 3.5 in Design Manual) 34. Provide the sum of the Total RRv provided (#30) and the WQv provided (#33a) . ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 35. Is the sum of the RRv provided (#30) and the WQv provided (#33a) greater than or equal to the total WQv required (#28) ? O Yes O No If Yes, go to question 36. If No, sizing criteria has not been met, so NOI can not be processed. SWPPP preparer must modify design to meet sizing criteria. 36. Provide the total Channel Protection Storage Volume (CPv) required and provided or select waiver (36a) , if applicable. CPv Required CPv Provided acre-feet �'�acre-feet ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 36a. The need to provide channel protection has been waived because: O Site discharges directly to tidal waters or a fifth order or larger stream. <D Reduction of the total CPv is achieved on site through runoff reduction techniques or infiltration systems. 37. Provide the Overbank Flood (Qp) and Extreme Flood (Qf) control criteria or select waiver (37a) , if applicable. Total Overbank Flood Control Criteria (Qp) Pre-Development Post-development CFS �'�CFS Total Extreme Flood Control Criteria (Qf) Pre-Development Post-development CFS �'�CFS Page 11 of 14 I 1310089822 ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 37a. The need to meet the Qp and Qf criteria has been waived because: O Site discharges directly to tidal waters or a fifth order or larger stream. O Downstream analysis reveals that the Qp and Qf controls are not required 38. Has a long term Operation and Maintenance Plan for the post-construction stormwater management practice (s) been O Yes O No developed? If Yes, Identify the entity responsible for the long term Operation and Maintenance ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 39. Use this space to summarize the specific site limitations and justification for not reducing 1000 of WQv required(#28) . (See question 32a) This space can also be used for other pertinent project information. Page 12 of 14 I 4285089826 40. Identify other DEC permits, existing and new, that are required for this project/facility. O Air Pollution Control O Coastal Erosion O Hazardous Waste O Long Island Wells O Mined Land Reclamation O Solid Waste O Navigable Waters Protection / Article 15 O Water Quality Certificate O Dam Safety O Water Supply O Freshwater Wetlands/Article 24 O Tidal Wetlands O Wild, Scenic and Recreational Rivers O Stream Bed or Bank Protection / Article 15 O Endangered or Threatened Species (Incidental Take Permit) O Individual SPDES O SPDES Multi-Sector GP N Y R O Other <� None 41. Does this project require a US Army Corps of Engineers Wetland Permit? .❑ 0 Yes O No If Yes, Indicate Size of Impact. 42. Is this project subject to the requirements of a regulated, traditional land use control MS4? O Yes O No (If No, skip question 43) 43. Has the "MS4 SWPPP Acceptance" form been signed by the principal executive officer or ranking elected official and submitted along Yes O No with this NOI? 44. If this NOI is being submitted for the purpose of continuing or transferring coverage under a general permit for stormwater runoff from construction activities, please indicate the former SPDES number assigned. N Y R LPage 13 of 14 I 3547089826 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Owner/Operator Certification I have read or been advised of the permit conditions and believe that I understand them. I also understand that, under the terms of the permit, there may be reporting requirements. I hereby certify that this document and the corresponding documents were prepared under my direction or supervision. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. I further understand that coverage under the general permit will be identified in the acknowledgment that I will receive as a result of submitting this NOI and can be as long as sixty (60) business days as provided for in the general permit. I also understand that, by submitting this NOI, I am acknowledging that the SWPPP has been developed and will be implemented as the first element of construction, and agreeing to comply with all the terms and conditions of the general permit for which this NOI is being submitted. Print First Name MI Print Last Name Owner/Operator Signature Date m / m / � Page 14 of 14 AhNew York State Department of Environmental Conservation Division of Water V 625 Broadway, 4th Floor IRRMW Albany, New York 12233-3505 MS4 Stormwater Pollution Prevention Plan (SWPPP) Acceptance Form for Construction Activities Seeking Authorization Under SPDES General Permit *(NOTE: Attach Completed Form to Notice Of Intent and Submit to Address Above) I. Project Owner/Operator Information 1.Owner/Operator Name: The Heritage at Cutchogue, LLC 2.Contact Person: Jeffrey Rimland 3. Street Address: 1721-D North Ocean Avenue 4.City/State/Zip: Medford/New York/11763 II. Project Site Information 5.Project/Site Name: The Heritage at Cutchogue 6. Street Address: North side of the intersection of Griffing St & Schoolhouse Ln 7.City/State/Zip: Yaphank/NY/11980 III. Stormwater Pollution Prevention Plan(SWPPP)Review and Acceptance Information 8. SWPPP Reviewed by: 9.Title/Position: 10.Date Final SWPPP Reviewed and Accepted: IV.Regulated MS4 Information 11.Name of MS4: 12.MS4 SPDES Permit Identification Number: NYR20A 13.Contact Person: 14. Street Address: 15.City/State/Zip: 16.Telephone Number: (NYS DEC-MS4 SWPPP Acceptance Forth-January 2010) Page 1 of 2 MS4 SWPPP Acceptance Form- continued V.Certification Statement-MS4 Official(principal executive officer or ranking elected official) or Duly Authorized Representative I hereby certify that the final Stormwater Pollution Prevention Plan(SWPPP)for the construction project identified in question 5 has been reviewed and meets the substantive requirements in the SPDES General Permit For Stormwater Discharges from Municipal Separate Storm Sewer Systems(MS4s). Note: The MS4,through the acceptance of the SWPPP,assumes no responsibility for the accuracy and adequacy of the design included in the SWPPP.In addition,review and acceptance of the SWPPP by the MS4 does not relieve the owner/operator or their SWPPP preparer of responsibility or liability for errors or omissions in the plan. Printed Name: Title/Position: Signature: Date: VI.Additional Information Page 2 of 2 AhNew York State Department of Environmental Conservation Division of Water V 625 Broadway, 4th Floor IRRMW Albany, New York 12233-3505 MS4 Stormwater Pollution Prevention Plan (SWPPP) Acceptance Form for Construction Activities Seeking Authorization Under SPDES General Permit *(NOTE: Attach Completed Form to Notice Of Intent and Submit to Address Above) I. Project Owner/Operator Information 1.Owner/Operator Name: 2.Contact Person: 3. Street Address: 4.City/State/Zip: II. Project Site Information 5.Project/Site Name: 6. Street Address: 7.City/State/Zip: III. Stormwater Pollution Prevention Plan(SWPPP)Review and Acceptance Information 8. SWPPP Reviewed by: 9.Title/Position: 10.Date Final SWPPP Reviewed and Accepted: IV.Regulated MS4 Information 11.Name of MS4: 12.MS4 SPDES Permit Identification Number:NYR20A 13.Contact Person: 14. Street Address: 15.City/State/Zip: 16.Telephone Number: (NYS DEC-MS4 SWPPP Acceptance Forth-January 20 10) Page 1 of 2 MS4 SWPPP Acceptance Form- continued V.Certification Statement-MS4 Official(principal executive officer or ranking elected official) or Duly Authorized Representative I hereby certify that the final Stormwater Pollution Prevention Plan(SWPPP) for the construction project identified in question 5 has been reviewed and meets the substantive requirements in the SPDES General Permit For Stormwater Discharges from Municipal Separate Storm Sewer Systems(MS4s). Note: The MS4,through the acceptance of the SWPPP,assumes no responsibility for the accuracy and adequacy of the design included in the SWPPP.In addition,review and acceptance of the SWPPP by the MS4 does not relieve the owner/operator or their SWPPP preparer of responsibility or liability for errors or omissions in the plan. Printed Name: Title/Position: Signature: Date: VI.Additional Information Page 2 of 2 Spill Response Procedure Initial Notification In the event of a spill, the facility and/or construction manager or supervisor will be notified immediately. Facility Manager: (name) (phone) Construction Manager: (name) (phone) Assessment -Initial Containment The supervisor or manager will assess the incident and initiate containment control measures with the appropriate spill containment equipment included in the spill kit kept on-site. The supervisor will first contact the Cutchogue Fire Department and then notify the Southold Town Police Department and Suffolk County Health Department. The fire department is ultimately responsible for matters of public health and safety and should be notified immediately. Fire Department: 911 or(631) 734-6907 Police Department: (631)765-2600 Suffolk County Health Department: (631)853-3000 Further Notification Based on the assessment from the Fire Chief, additional notification to a cleanup contractor may be made. The New York Department of Environmental Conservation and the EPA may be notified depending upon the nature and severity of the spill. The Fire Chief will be responsible for determining the level of cleanup and notification required. The attached list of emergency phone numbers shall be posted in the main construction/facility office and readily accessible to all employees. NYSDEC Spill Hotline: 1-800-457-7362 (within NYS) National Response Center: 1-800-424-8802/(518)457-7362 (outside NYS) For further information, contact: New York State Department of Environmental Conservation Division of Environmental Remediation Bureau of Spill Prevention & Response 625 Broadway— 11th Floor Albany, NY 12233-7020 (518)402-9546 HAZARDOUS WASTE/OIL SPILL REPORT Date / / Time —AM/PM Exact location (Transformer#) Type of equipment Make Size S/N Weather Conditions On or near water ❑ Yes If yes, name of body of water ❑ No Type of chemical/oil spilled Amount of chemical/oil spilled Cause of spill Measures taken to contain or clean up spill Amount of chemical/oil recovered Method Material collected as a result of clean up drums containing drums containing drums containing Location and method of debris disposal Name and address of any person, firm, or corporation suffering damages Procedures, method, and precautions instituted to prevent a similar occurrence from recurring_ Spill reported to General Office by Time AM /PM Spill reported to DEC/National Response Center by DEC Date / / Time -AM/PM Inspector NRC Date / / Time AM/PM Inspector Additional comments EMERGENCY RESPONSE EQUIPMENT INVENTORY The following equipment and materials shall be maintained at all times and stored in a secure area for construction activities emergency response need. -- SORBENT PADS 5 PADS -- SAND BAGS (empty) 10 -- SPEEDI-DRI ABSORBENT 5 40# BAGS -- SHOVEL 1 -- PICK 1 -- PRY BAR 1 The following items shall be placed in a convenient, readily accessible location on site. -- STRAW BALES &GRADE STAKES 10 -- SAND 2 CUBIC YARDS EMERGENCY NOTIFICATION PHONE NUMBERS 1. SUPERVISOR/MANAGER NAME: BEEPER: PHONE: HOME PHONE: ALTERNATE: NAME: BEEPER: PHONE: HOME PHONE: 2. CUTCHOGUE FIRE DEPARTMENT EMERGENCY: 911 BUSINESS: (631) 734-6907 3. SOUTHOLD TOWN POLICE DEPARTMENT EMERGENCY: 911 GENERAL NUMBER: (631)765-2600 4. CLEANUP CONTRACTOR: ADDRESS: PHONE: 5. NEW YORK DEPARTMENT OF ENVIRONMENTAL CONSERVATION EMERGENCY: 1-800-457-7362 OUTSIDE NEW YORK: 1-518 457-7362 6. NATIONAL RESPONSE CENTER PHONE: 1-800-424-8802 ALTERNATE: U.S. ENVIRONMENTAL PROTECTION AGENCY BUSINESS: 1-212-637-3660 7. SUFFOLK COUNTY HEALTH DEPARTMENT PHONE: (631)853-3000 APPENDIX G EROSION AND SEDIMENT CONTROL PLAN REVIEW CHECKLIST Project Name Site Location Applicant's Name&Address General A narrative statement shall be provided that describes the proposed project nature and purpose; the existing site conditions including topography,vegetation and drainage;adjacent and off-site areas affected by the project; description of the soils on the site and key properties;notations of critical areas such as steep slopes,channels or wetlands;the overall phasing, se- quencing and stabilization plan;total disturbed area and those not to be disturbed. L Construction Drawings Are the following items shown on the construction drawings: Yes No 1.Vicinity Map with scale and north arrow 2.Legend, scales,N arrow on plan view 3.Existing and proposed topography shown with contours labeled with spots elevations in critical areas 4. Scope of the plan noted in the Title Block 5.Limits of clearing and grading shown 6.Existing vegetation delineated 7. Soil boundaries shown on the plan view 8.Existing drainage patterns, 100 year floodplain and sub-areas shown 9.Existing and proposed development facilities/ improvements shown 10.Location of Erosion and Sediment control practices as phased with construction 11.Phasing plan with 5 acre threshold limits shown 12. Stockpile locations, staging areas and access points clearly defined 13. Street profiles,utility locations,property boundaries and, easement delineations shown August 2005 Page G.I New York Standards and Specifications For Erosion and Sediment Control IL Construction Notes & Details Yes No 1. Specific sequence of operation given for each phase 2.Inspection and maintenance schedule shown for the specific practices 3.Design details show all dimensions and installation details necessary for construction 4.Implementation schedule for E&S practices is provided with removal criteria stated 5.Construction waste management plan incorporated in the notes 6. Site Inspections during construction are noted on the drawings and is in accordance with the General Permit for Stormwater Discharges from Construction Activities III. Erosion& Sediment Control Practices A. General Yes No 1.Practice meets purpose and design criteria 2. Standard details and construction notes are provided 3. Special timing of practice noted if applicable 4.Provisions for traffic crossings shown on the drawings where necessary B. Practices Controlling Runoff Yes No 1.Positive drainage is maintained with contributing drainage area shown 2.Flow grades properly stabilized 3.Adequate outlet or discharge condition stabilized 4.Necessary dimensions,gradations, calculations, and materials shown C. Practices Stabilizing Soil Yes No 1. Seeding rates and areas properly shown on the drawings 2.Mulch materials and rates specified on the drawings 3. Sequencing and timing provisions limit soil exposure to 14 days New York Standards and Specifications Page G.2 August 2005 For Erosion and Sediment Control C. Practices Stabilizing Soil(cont'd) Yes No 4.Rolled Erosion Control Products(RECP's) used are specified to location and appropriate weight/tie down 5.All soil seed bed preparation and amendments are specified on the drawings or in the specifications 6.The seeding dates are specified to cover the entire year for both temporary and permanent seedings 7.Maximum created slope is no steeper than 2 foot horizontal to 1 foot vertical with Cut and Fill slopes shown D. Practices Controlling Sediment Yes No 1. Sediment traps/basins are sized in accordance with criteria 2.The contributing drainage area is shown on the grading plan 3.All scaled dimensions and volumes are shown on the plan 4.Maintenance requirements and clean out elevations established for all sediment control practices(50%capacity) 5.All access points of the project are shown to be stabilized 6. Storm drain inlets adequately protected 7. Silt fences are shown on the contour lines with no more than one quarter acre per 100 foot drainage to it 8.Temporary sediment traps being used at locations of future stormwater infiltration facilities August 2005 Page G.3 New York Standards and Specifications For Erosion and Sediment Control Additional Comments Plan Reviewed By: Date: New York Standards and Specifications Page GA August 2005 For Erosion and Sediment Control APPENDIX H STATE POLLUTANT DISCHARGE ELIMINATION SYSTEM FOR CONSTRUCTION ACTIVITIES CONSTRUCTION SITE LOG BOOK Table of Contents L Pre-Construction Meeting Documents a. Preamble to Site Assessment and Inspections b. Operator's Certification C. Qualified Professional's Credentials & Certification d. Pre-Construction Site Assessment Checklist IL Construction Duration Inspections a. Directions b. Modification to the SWPPP III. Monthly Summary Reports IV. Monitoring, Reporting, and Three-Month Status Reports a. Operator's Compliance Response Form Properly completing forms such as those contained in Appendix H meet the inspection requirement of NYS- DEC SPDES GP for Construction Activities. Completed forms shall be kept on site at all times and made avail- able to authorities upon request. August 2005 Page H.1 New York Standards and Specifications For Erosion and Sediment Control I. PRE-CONSTRUCTION MEETING DOCUMENTS Project Name Permit No. Date of Authorization Name of Operator Prime Contractor a. Preamble to Site Assessment and Inspections The Following Information To Be Read By All Person's Involved in The Construction of Stormwater Re- lated Activities: The Operator agrees to have a qualified professional'conduct an assessment of the site prior to the com- mencement of construction and certify in this inspection report that the appropriate erosion and sediment controls described in the SWPPP have been adequately installed or implemented to ensure overall prepared- ness of the site for the commencement of construction. Prior to the commencement of construction,the Operator shall certify in this site logbook that the SWPPP has been prepared in accordance with the State's standards and meets all Federal, State and local erosion and sediment control requirements. When construction starts, site inspections shall be conducted by the qualified professional at least every 7 calendar days and within 24 hours of the end of a storm event of 0.5 inches or greater(Construction Dura- tion Inspections). The Operator shall maintain a record of all inspection reports in this site logbook. The site logbook shall be maintained on site and be made available to the permitting authorities upon request. The Operator shall post at the site, in a publicly accessible location, a summary of the site inspection activities on a monthly basis (Monthly Summary Report). The operator shall also prepare a written summary of compliance with this general permit at a minimum frequency of every three months (Operator's Compliance Response Form),while coverage exists. The sum- mary should address the status of achieving each component of the SWPPP. Prior to filing the Notice of Termination or the end of permit term,the Operator shall have a qualified pro- fessional perform a final site inspection. The qualified professional shall certify that the site has undergone final stabilization' using either vegetative or structural stabilization methods and that all temporary erosion and sediment controls (such as silt fencing)not needed for long-term erosion control have been removed. In addition,the Operator must identify and certify that all permanent structures described in the SWPPP have been constructed and provide the owner(s)with an operation and maintenance plan that ensures the structure(s) continuously functions as designed. 1 "Qualified Professional means a person knowledgeable in the principles and practice of erosion and sediment controls, such as a Certified Professional in Erosion and Sediment Control(CPESC), soil scientist,licensed engineer or someone working under the direction and supervision of a licensed engineer(person must have experience in the principles and practices of erosion and sediment control). 2 "Commencement of construction"means the initial removal of vegetation and disturbance of soils associated with clearing,grading or excavating activities or other construction activities. 3 "Final stabilization"means that all soil-disturbing activities at the site have been completed and a uniform,perennial vegetative cover with a density of eighty(80)percent has been established or equivalent stabilization measures(such as the use of mulches or geotextiles)have been employed on all unpaved areas and areas not covered by permanent struc- tures. New York Standards and Specifications Page H.2 August 2005 For Erosion and Sediment Control b. Operators Certification "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information,the information submitted is,to the best of my knowledge and belief,true, accurate, and complete. Further,I hereby certify that the SWPPP meets all Federal, State, and local erosion and sediment control requirements. I am aware that false statements made herein are punishable as a class A misdemeanor pursuant to Section 210.45 of the Penal Law. Name (please print): Title Date: Address: Phone: Email: Signature: c. Qualified Professional's Credentials & Certification "I hereby certify that I meet the criteria set forth in the General Permit to conduct site inspections for this project and that the appropriate erosion and sediment controls described in the SWPPP and as described in the following Pre-construction Site Assessment Checklist have been adequately installed or implemented, ensuring the overall preparedness of this site for the commencement of construction." Name (please print): Title Date: Address: Phone: Email: Signature: August 2005 Page H.3 New York Standards and Specifications For Erosion and Sediment Control d. Pre-construction Site Assessment Checklist (NOTE: Provide comments below as necessary) 1.Notice of Intent, SWPPP, and Contractors Certification: Yes No NA [] [] [] Has a Notice of Intent been filed with the NYS Department of Conservation? [] [] [] Is the SWPPP on-site? Where? [] [] [] Is the Plan current? What is the latest revision date? [] [] [] Is a copy of the NOI(with brief description) onsite?Where? [] [] [] Have all contractors involved with stormwater related activities signed a contractor's certification? 2. Resource Protection Yes No NA [] [] []Are construction limits clearly flagged or fenced? [] [] [] Important trees and associated rooting zones, on-site septic system absorption fields, existing vegetated areas suitable for filter strips, especially in perimeter areas,have been flagged for protection. [] [] [] Creek crossings installed prior to land-disturbing activity, including clearing and blasting. 3. Surface Water Protection Yes No NA [] [] [] Clean stormwater runoff has been diverted from areas to be disturbed. [] [] [] Bodies of water located either on site or in the vicinity of the site have been identified and protected. [] [] []Appropriate practices to protect on-site or downstream surface water are installed. [] [] []Are clearing and grading operations divided into areas<5 acres? 4. Stabilized Construction Entrance Yes No NA [] [] []A temporary construction entrance to capture mud and debris from construction vehicles before they enter the public highway has been installed. [] [] [] Other access areas (entrances, construction routes, equipment parking areas) are stabilized immediately as work takes place with gravel or other cover. [] [] [] Sediment tracked onto public streets is removed or cleaned on a regular basis. 5. Perimeter Sediment Controls Yes No NA [] [] [] Silt fence material and installation comply with the standard drawing and specifications. [] [] [] Silt fences are installed at appropriate spacing intervals [] [] [] Sediment/detention basin was installed as first land disturbing activity. [] [] [] Sediment traps and barriers are installed. 6. Pollution Prevention for Waste and Hazardous Materials Yes No NA [] [] [] The Operator or designated representative has been assigned to implement the spill prevention avoidance and response plan. [] [] [] The plan is contained in the SWPPP on page [] [] []Appropriate materials to control spills are onsite. Where? New York Standards and Specifications Page HA August 2005 For Erosion and Sediment Control IL CONSTRUCTION DURATION INSPECTIONS a. Directions: Inspection Forms will be filled out during the entire construction phase of the project. Required Elements: (1) On a site map, indicate the extent of all disturbed site areas and drainage pathways. Indicate site areas that are expected to undergo initial disturbance or significant site work within the next 14-day period; (2) Indicate on a site map all areas of the site that have undergone temporary or permanent stabilization; (3) Indicate all disturbed site areas that have not undergone active site work during the previous 14-day period; (4) Inspect all sediment control practices and record the approximate degree of sediment accumulation as a percentage of sediment storage volume (for example, 10 percent, 20 percent, 50 percent); (5) Inspect all erosion and sediment control practices and record all maintenance requirements such as verifying the integrity of barrier or diversion systems (earthen berms or silt fencing) and containment systems (sediment basins and sediment traps). Identify any evidence of rill or gully erosion occurring on slopes and any loss of stabilizing vegetation or seeding/mulching. Document any excessive deposition of sediment or ponding water along barrier or diversion systems. Record the depth of sediment within containment structures, any erosion near outlet and overflow structures, and verify the ability of rock filters around perforated riser pipes to pass water; and (6) Immediately report to the Operator any deficiencies that are identified with the implementation of the SWPPP. August 2005 Page H.5 New York Standards and Specifications For Erosion and Sediment Control CONSTRUCTION DURATION INSPECTIONS Page 1 of SITE PLAN/SKETCH Inspector(print name) Date of Inspection Qualified Professional(print name) Qualified Professional Signature The above signed acknowledges that, to the best of his/her knowledge, all information provided on the forms is accurate and complete. New York Standards and Specifications Page H.6 August 2005 For Erosion and Sediment Control CONSTRUCTION DURATION INSPECTIONS Page 2 of Maintaining Water Quality Yes No NA [ ] [ ] [ ] Is there an increase in turbidity causing a substantial visible contrast to natural conditions? [ ] [ ] [ ] Is there residue from oil and floating substances,visible oil film, or globules or grease? [ ] [ ] [ ] All disturbance is within the limits of the approved plans. [ ] [ ] [ ] Have receiving lake/bay, stream, and/or wetland been impacted by silt from project? Housekeeping 1. General Site Conditions Yes No NA [ ] [ ] [ ] Is construction site litter and debris appropriately managed? [ ] [ ] [ ] Are facilities and equipment necessary for implementation of erosion and sediment control in working order and/or properly maintained? [ ] [ ] [ ] Is construction impacting the adjacent property? [ ] [ ] [ ] Is dust adequately controlled? 2. Temporary Stream Crossing Yes No NA [ ] [ ] [ ] Maximum diameter pipes necessary to span creek without dredging are installed. [ ] [ ] [ ] Installed non-woven geotextile fabric beneath approaches. [ ] [ ] [ ] Is fill composed of aggregate (no earth or soil)? [ ] [ ] [ ] Rock on approaches is clean enough to remove mud from vehicles & prevent sediment from entering stream during high flow. Runoff Control Practices 1. Excavation Dewatering Yes No NA [ ] [ ] [ ] Upstream and downstream berms (sandbags, inflatable dams, etc.) are installed per plan. [ ] [ ] [ ] Clean water from upstream pool is being pumped to the downstream pool. [ ] [ ] [ ] Sediment laden water from work area is being discharged to a silt-trapping device. [ ] [ ] [ ] Constructed upstream berm with one-foot minimum freeboard. 2. Level Spreader Yes No NA [ ] [ ] [ ] Installed per plan. [ ] [ ] [ ] Constructed on undisturbed soil,not on fill,receiving only clear,non-sediment laden flow. [ ] [ ] [ ] Flow sheets out of level spreader without erosion on downstream edge. 3. Interceptor Dikes and Swales Yes No NA [ ] [ ] [ ] Installed per plan with minimum side slopes 2H:1 V or flatter. [ ] [ ] [ ] Stabilized by geotextile fabric, seed, or mulch with no erosion occurring. [ ] [ ] [ ] Sediment-laden runoff directed to sediment trapping structure August 2005 Page H.7 New York Standards and Specifications For Erosion and Sediment Control CONSTRUCTION DURATION INSPECTIONS Page 3 of Runoff Control Practices (continued) 4. Stone Check Dam Yes No NA [ ] [ ] [ ] Is channel stable? (flow is not eroding soil underneath or around the structure). [ ] [ ] [ ] Check is in good condition(rocks in place and no permanent pools behind the structure). [ ] [ ] [ ] Has accumulated sediment been removed?. 5. Rock Outlet Protection Yes No NA [ ] [ ] [ ] Installed per plan. [ ] [ ] [ ] Installed concurrently with pipe installation. Soil Stabilization 1. Topsoil and Spoil Stockpiles Yes No NA [ ] [ ] [ ] Stockpiles are stabilized with vegetation and/or mulch. [ ] [ ] [ ] Sediment control is installed at the toe of the slope. 2. Revegetation Yes No NA [ ] [ ] [ ] Temporary seedings and mulch have been applied to idle areas. [ ] [ ] [ ] 4 inches minimum of topsoil has been applied under permanent seedings Sediment Control Practices 1. Stabilized Construction Entrance Yes No NA [ ] [ ] [ ] Stone is clean enough to effectively remove mud from vehicles. [ ] [ ] [ ] Installed per standards and specifications? [ ] [ ] [ ] Does all traffic use the stabilized entrance to enter and leave site? [ ] [ ] [ ] Is adequate drainage provided to prevent ponding at entrance? 2. Silt Fence Yes No NA [ ] [ ] [ ] Installed on Contour, 10 feet from toe of slope (not across conveyance channels). [ ] [ ] [ ] Joints constructed by wrapping the two ends together for continuous support. [ ] [ ] [ ] Fabric buried 6 inches minimum. [ ] [ ] [ ] Posts are stable, fabric is tight and without rips or frayed areas. Sediment accumulation is % of design capacity. New York Standards and Specifications Page H.8 August 2005 For Erosion and Sediment Control CONSTRUCTION DURATION INSPECTIONS Page 4 of Sediment Control Practices (continued) 3. Storm Drain Inlet Protection(Use for Stone & Block; Filter Fabric; Curb; or, Excavated practices) Yes No NA [ ] [ ] [ ] Installed concrete blocks lengthwise so open ends face outward,not upward. [ ] [ ] [ ] Placed wire screen between No. 3 crushed stone and concrete blocks. [ ] [ ] [ ] Drainage area is 1 acre or less. [ ] [ ] [ ] Excavated area is 900 cubic feet. [ ] [ ] [ ] Excavated side slopes should be 2:1. [ ] [ ] [ ] 2"x 4" frame is constructed and structurally sound. [ ] [ ] [ ] Posts 3-foot maximum spacing between posts. [ ] [ ] [ ] Fabric is embedded 1 to 1.5 feet below ground and secured to frame/posts with staples at max fl- inch spacing. [ ] [ ] [ ] Posts are stable, fabric is tight and without rips or frayed areas. Sediment accumulation % of design capacity. 4. Temporary Sediment Trap Yes No NA [ ] [ ] [ ] Outlet structure is constructed per the approved plan or drawing. [ ] [ ] [ ] Geotextile fabric has been placed beneath rock fill. Sediment accumulation is % of design capacity. 5. Temporary Sediment Basin Yes No NA [ ] [ ] [ ] Basin and outlet structure constructed per the approved plan. [ ] [ ] [ ] Basin side slopes are stabilized with seed/mulch. [ ] [ ] [ ] Drainage structure flushed and basin surface restored upon removal of sediment basin facility. Sediment accumulation is % of design capacity. Note: Not all erosion and sediment control practices are included in this listing. Add additional pages to this list as required by site specific design. Construction inspection checklists for post-development stormwater management practices can be found in Appendix F of the New York Stormwater Management Design Manual. August 2005 Page H.9 New York Standards and Specifications For Erosion and Sediment Control CONSTRUCTION DURATION INSPECTIONS b. Modifications to the SWPPP(To be completed as described below) The Operator shall amend the SWPPP whenever: 1. There is a significant change in design, construction, operation, or maintenance which may have a significant effect on the potential for the discharge of pollutants to the waters of the United States and which has not otherwise been addressed in the SWPPP; or 2. The SWPPP proves to be ineffective in: a. Eliminating or significantly minimizing pollutants from sources identified in the SWPPP and as required by this permit; or b. Achieving the general objectives of controlling pollutants in stormwater discharges from permitted construction activity; and 3. Additionally, the SWPPP shall be amended to identify any new contractor or subcontractor that will implement any measure of the SWPPP. Modification &Reason: New York Standards and Specifications Page H.10 August 2005 For Erosion and Sediment Control III. Monthly Summary of Site Inspection Activities Name of Permitted Facility: Today's Date: eporting Month: Location: Permit Identification#: Name and Telephone Number of Site Inspector: Date of Regular/Rainfall Inspection based Inspection Name of Inspector Items of Concern Owner/Operator Certification: "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted.Based on my inquiry of the person or persons who manage the system,or those persons directly responsible for gathering the information,the information submitted is,to the best of my knowledge and belief,true,accurate,and complete. I am aware that false statements made herein are punishable as a class A misdemeanor pursuant to Section 210.45 of the Penal Law." Signature of Permittee or Duly Authorized Representative Name of Permittee or Duly Authorized Representative Date Duly authorized representatives must have written authorization, submitted to DEC, to sign any permit documents. August 2005 Page H.11 New York Standards and Specifications For Erosion and Sediment Control New York State Department of Environmental Conservation AmDivision of Water v _ 625 Broadway, 4th Floor Albany, New York 12233-3505 *(NOTE: Submit completed form to address above)* NOTICE OF TERMINATION for Storm Water Discharges Authorized under the SPDES General Permit for Construction Activity Please indicate your permit identification number: NYR I. Owner or Operator Information 1.Owner/Operator Name: The Heritage at Cutchogue, LLC 2. street Address: 1721-D North Ocean Avenue 3.City/State/zip: Medford/NY/11763 4.Contact Person: Jeffrey Rimland 4a.Telephone: 631-207-5730 5.Contact Person E-Mail: JRimland@northop.com II. Project Site Information 5.Project/Site Name: The Heritage at Cutchogue 6. street Address: North side of the intersection of Griffing Street and Schoolhouse Lane 7.City/zip: Cutchogue/11935 8.County: Suffolk County III. Reason for Termination 9a. ❑All disturbed areas have achieved final stabilization in accordance with the general permit and SWPPP. *Date final stabilization completed(month/year): 9b. ❑Permit coverage has been transferred to new owner/operator. Indicate new owner/operator's permit identification number:NYR (Note: Permit coverage can not be terminated by owner identified in 1.1.above until new owner/operator obtains coverage under the general permit) 9c. ❑Other(Explain on Page 2) IV. Final Site Information: 10a. Did this construction activity require the development of a SWPPP that includes post-construction stormwater management practices? ❑yes ❑no (If no,go to question l Of.) 10b.Have all post-construction stormwater management practices included in the final SWPPP been constructed? ❑yes ❑no (If no,explain on Page 2) 10c.Identify the entity responsible for long-term operation and maintenance of practice(s)? Page 1 of 3 NOTICE OF TERMINATION for Storm Water Discharges Authorized under the SPDES General Permit for Construction Activity-continued 10d.Has the entity responsible for long-term operation and maintenance been given a copy of the operation and maintenance plan required by the general permit? ❑yes ❑no 10e.Indicate the method used to ensure long-term operation and maintenance of the post-construction stormwater management practice(s): ❑Post-construction stormwater management practice(s) and any right-of-way(s)needed to maintain practice(s)have been deeded to the municipality. ❑Executed maintenance agreement is in place with the municipality that will maintain the post-construction stonnwater management practice(s). ❑For post-construction stonnwater management practices that are privately owned,the deed of record has been modified to include a deed covenant that requires operation and maintenance of the practice(s)in accordance with the operation and maintenance plan. ❑For post-construction stonnwater management practices that are owned by a public or private institution (e.g. school,college,university),or government agency or authority,policy and procedures are in place that ensures operation and maintenance of the practice(s)in accordance with the operation and maintenance plan. 10£Provide the total area of impervious surface(i.e.roof,pavement,concrete,gravel,etc.)constructed within the disturbance area? (acres) 11.Is this project subject to the requirements of a regulated,traditional land use control MS4? ❑yes ❑no (If Yes,complete section VI-"MS4 Acceptance"statement V. Additional Information/Explanation: (Use this section to answer questions 9c. and 10b.,if applicable) VI. MS4 Acceptance-MS4 Official(principal executive officer or ranking elected official) or Duly Authorized Representative(Note:Not required when 9b.is checked-transfer of coverage) I have determined that it is acceptable for the owner or operator of the construction project identified in question 5 to submit the Notice of Termination at this time. Printed Name: Title/Position: Signature: Date: Page 2 of 3 NOTICE OF TERMINATION for Storm Water Discharges Authorized under the SPDES General Permit for Construction Activity-continued VII. Qualified Inspector Certification-Final Stabilization: I hereby certify that all disturbed areas have achieved final stabilization as defined in the current version of the general permit, and that all temporary,structural erosion and sediment control measures have been removed. Furthermore,I understand that certifying false,incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal,civil and/or administrative proceedings. Printed Name: Title/Position: Signature: Date: VIII. Qualified Inspector Certification-Post-construction Stormwater Management Practice(s): I hereby certify that all post-construction stormwater management practices have been constructed in conformance with the SWPPP.Furthermore,I understand that certifying false,incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal,civil and/or administrative proceedings. Printed Name: Title/Position: Signature: Date: IX. Owner or Operator Certification I hereby certify that this document was prepared by me or under my direction or supervision.My determination, based upon my inquiry of the person(s)who managed the construction activity,or those persons directly responsible for gathering the information,is that the information provided in this document is true,accurate and complete.Furthermore,I understand that certifying false,incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal,civil and/or administrative proceedings. Printed Name: Title/Position: Signature: Date: (NYS DEC Notice of Termination-January 20 10) Page 3 of 3 New York State Department of Environmental Conservation AmDivision of Water v _ 625 Broadway, 4th Floor Albany, New York 12233-3505 *(NOTE: Submit completed form to address above)* NOTICE OF TERMINATION for Storm Water Discharges Authorized under the SPDES General Permit for Construction Activity Please indicate your permit identification number: NYR I. Owner or Operator Information 1.Owner/Operator Name: 2. Street Address: 3.City/State/Zip: 4.Contact Person: 4a.Telephone: 5.Contact Person E-Mail: II. Project Site Information 5.Project/Site Name: 6. Street Address: 7.City/Zip: 8.County: III. Reason for Termination 9a. ❑All disturbed areas have achieved final stabilization in accordance with the general permit and SWPPP. *Date final stabilization completed(month/year): 9b. ❑Permit coverage has been transferred to new owner/operator. Indicate new owner/operator's permit identification number:NYR (Note: Permit coverage can not be terminated by owner identified in 1.1.above until new owner/operator obtains coverage under the general permit) 9c. ❑Other(Explain on Page 2) IV. Final Site Information: 10a. Did this construction activity require the development of a SWPPP that includes post-construction stormwater management practices? ❑yes ❑no (If no,go to question 1Of.) 10b.Have all post-construction stormwater management practices included in the final SWPPP been constructed? ❑yes ❑no (If no,explain on Page 2) 10c.Identify the entity responsible for long-term operation and maintenance of practice(s)? Page 1 of 3 NOTICE OF TERMINATION for Storm Water Discharges Authorized under the SPDES General Permit for Construction Activity-continued 10d.Has the entity responsible for long-term operation and maintenance been given a copy of the operation and maintenance plan required by the general permit? ❑yes ❑no 10e.Indicate the method used to ensure long-term operation and maintenance of the post-construction stonnwater management practice(s): ❑Post-construction stonnwater management practice(s)and any right-of-way(s)needed to maintain practice(s)have been deeded to the municipality. ❑Executed maintenance agreement is in place with the municipality that will maintain the post-construction stonnwater management practice(s). ❑For post-construction storrawater management practices that are privately owned,the deed of record has been modified to include a deed covenant that requires operation and maintenance of the practice(s)in accordance with the operation and maintenance plan. ❑For post-construction stormwater management practices that are owned by a public or private institution (e.g. school,college,university),or government agency or authority,policy and procedures are in place that ensures operation and maintenance of the practice(s)in accordance with the operation and maintenance plan. l Of.Provide the total area of impervious surface(i.e.roof,pavement,concrete,gravel,etc.)constructed within the disturbance area? (acres) 11.Is this project subject to the requirements of a regulated,traditional land use control MS4? ❑yes ❑no (If Yes,complete section VI-"MS4 Acceptance"statement V. Additional Information/Explanation: (Use this section to answer questions 9c.and 10b.,if applicable) VI. MS4 Acceptance-MS4 Official(principal executive officer or ranking elected official)or Duly Authorized Representative(Note:Not required when 9b.is checked-transfer of coverage) I have determined that it is acceptable for the owner or operator of the construction project identified in question 5 to submit the Notice of Termination at this time. Printed Name: Title/Position: Signature: Date: Page 2 of 3 NOTICE OF TERMINATION for Storm Water Discharges Authorized under the SPDES General Permit for Construction Activity-continued VII. Qualified Inspector Certification-Final Stabilization: I hereby certify that all disturbed areas have achieved final stabilization as defined in the current version of the general permit, and that all temporary, structural erosion and sediment control measures have been removed. Furthermore,I understand that certifying false,incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal,civil and/or administrative proceedings. Printed Name: Title/Position: Signature: Date: VIII. Qualified Inspector Certification-Post-construction Stormwater Management Practice(s): I hereby certify that all post-construction stormwater management practices have been constructed in conformance with the SWPPP.Furthermore,I understand that certifying false,incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal,civil and/or administrative proceedings. Printed Name: Title/Position: Signature: Date: IX. Owner or Operator Certification I hereby certify that this document was prepared by me or under my direction or supervision.My determination, based upon my inquiry of the person(s)who managed the construction activity,or those persons directly responsible for gathering the information,is that the information provided in this document is true,accurate and complete.Furthermore,I understand that certifying false,incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal,civil and/or administrative proceedings. Printed Name: Title/Position: Signature: Date: (NYS DEC Notice of Termination-January 20 10) Page 3 of 3