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HomeMy WebLinkAbout1000-93.-2-2.4 OFFICE LOCATION: o�*OF S10U�yOI MAILING ADDRESS: Town Hall Annex P.O. Box 1179 54375 State Route 25 J�L l Southold,NY 11971 (cor. Main Rd. &Youngs Ave.) Telephone: 631 765-1938 Southold, NY 11971 �yCOUNTI,� LOCAL WATERFRONT REVITALIZATION PROGRAM TOWN OF SOUTHOLD MEMORANDUM To: Michael Domino, President Town of Southold Board of Trustees From: Mark Terry, LWRP Coordinator Date: February 11, 2019 Re: LWRP Coastal Consistency Review for SUFFOLK COUNTY, c/o CORNELL COOPERATIVE EXTENSION SCTM# 1000-93-2-2.4 Christopher Pickerell on behalf of SUFFOLK COUNTY, c/o CORNELL COOPERATIVE EXTENSION requests a Wetland Permit to install a living shoreline, a form of green infrastructure, as a means of preventing erosion, increasing wildlife habitat and improving water quality; the living shoreline demonstration project will focus on combining Spartina plantings and choir logs with hatchery cultivated ribbed mussels; to demonstrate these techniques for shoreline stabilization, a series of different substrates for ribbed mussels will be used and applied in five (5) different 60' long plot sections of the wetlands along the shoreline of a dredged canal in Cedar Beach Creek to determine which are most effective for creating a multi:species living shoreline; all of the demonstration plots will incorporate natural material to provide a "hardened" component along the seaward edge of the plots, backed by a vegetated component (cordgrass) extending from mean sea level to mean high water; none of the proposed "hardened" structures will extend above the sediment surface by more than 2' (24"); any un-vegetated areas upland of the "hardened" structures will have cordgrass plugs planted V on-center spacing up to mean high water; the plots will consist of one (1) coir/coconut fiber log section, one (1) shell bag section, one (1) rock section, one (1) single natural wood terrace section, and one (1) double natural wood terrace section. Located: 3690 Cedar Beach Road, Southold. SCTM# 1000-93-2-2.4 The proposed action has been reviewed to Chapter 268, Waterfront Consistency Review of the Town of Southold Town Code and the Local Waterfront Revitalization Program (LWRP) Policy Standards. Based upon the information provided on the LWRP Consistency Assessment Form submitted to this department, as well as the records available to me, it is my recommendation that the action is CONSISTENT with the Policy Standards and therefore is CONSISTENT with the LWRP. Pursuant to Chapter 268, the Board of Trustees shall consider this recommendation in preparing its written determination regarding the consistency of the proposed action. Cc: Damon Hagan, Assistant Town Attorney RECEIVED Town of Southold FEB 0 4 2019 LWRP CONSISTENCY ASSESSMENT FORM Southold Town A. INSTRUCTIONS Planning Board 1. All applicants for permits* including Town of Southold agencies, shall complete this CCAF for proposed actions that are subject to the Town of Southold Waterfront Consistency Review Law. This assessment is intended to supplement other information used by a Town of Southold agency in making a determination of consistency. *Except minor exempt actions including Building Permits and other ministerial permits not located within the Coastal Erosion Hazard Area. 2. Before answering the questions in Section C, the preparer of this form should review the exempt minor action list, policies and explanations of each policy contained in the Town of Southold Local Waterfront Revitalization Program. A proposed action will be evaluated as to its significant beneficial and adverse effects upon the coastal area(which includes all of Southold Town). 3. If any question in Section C on this form is answered "yes" or "no", then the proposed action will affect the achievement of the LWRP policy standards and conditions contained in the consistency review law. Thus, each answer.must be explained in_detail,, listing both supporting and non- ,supporting facts. If an action cannot be certified as consistent with the LWRP policy standards and conditions,it shall not be undertaken. A copy of the LWRP is available in,the following places: online at the Town of Southold's,- website (southoldtown.northfork.net), the Board of Trustees Office, the Planning Department, all local libraries and the Town Clerk's office. B. DESCRIPTION OF SITE AND PROPOSED ACTION 93 _ 2 _ 2004 SCTM# } PROJECT NAME Living Shoreline Demonstration Projoct The Application has been submitted to(check appropriateTown Board Planning Board❑ BuildingDestees1. Category of Town of Southold agency action(chec (a) Action undertaken directly by Town agency(e.g.capital ❑ construction,planning activity, agency regulation, land transaction) ❑ (b) Financial assistance(e.g.grant,loan,subsidy) (c) Permit, approval,license,certification: F1 Nature and extent of action: ' The proposed project is to install a living Shoreline,form of green infrastructure,as a means of preventing erosion, increasing wildlife habitat and improving water quality. The living shoreline demonstration project will focus on combining Spartina planting and coir logs with hatchery cultivated ribbed mussels,to demonstrate these for shoreline stabilization. A series of different substrates for ribbed mussels will be used and applied in different sections of the wetlands to determine which are most effective for creating a multi-species living shoreline. s Location of action: 3690 Cedar Beach Rd. Southold,NY 11971 Site acreage: 59.05 Present land use: Education/Recreation Present zoning classification: R-80 _ 2. If an application for the proposed action has been filed with the Town of Southold•agency, the following information shall be provided: (a) Name of applicant: Cornell Cooperative Extension of Suffolk County (b) Mailing address: 423 Griffing Ave.Riverhead,NY 11901 (c) Telephone number: Area Code(31)852-8660 (d) Application number,if any: /V/ Will the action be directly undertaken,require funding, or approval by a state or federal agency? NO NYSDEC,NYSDOS,NYSOGS,and USACE(approval) Yes ❑ - If yes,which state or federal agency?- C. Evaluate the project to the following policies by analyzing how the project will further support or not support the policies. Provide all proposed Best Management Practices that will further each policy. Incomplete answers will require that the form be returned for completion. DEVELOPED COAST POLICY Policy 1. Foster a pattern of development in the Town of Southold that enhances community character, preserves open space, makes efficient use of infrastructure, makes beneficial use of a coastal location,and minimizes adverse effects of development. See LWRP Section III—Policies; Page 2 for evaluation criteria. Yes ❑ No ❑ Not Applicable This project will foster a pattern in the Town of Southold that enhances community character,preserve open space,make efficient use of infrastructure,make beneficial use of a coastal location,and minimize adverse effects of development by installing a living shoreline. A living shoreline is a form of green infrastructure that can replace traditional forms of shoreline hardening such as a bulkhead or rock revetment. This project will provide a model for regulators to see how different green techniques can be applied to address shoreline protection and water quality issues across_the.community. Attach additional sheets if necessary Policy 2. Protect and preserve historic and archaeological resources of the Town of Southold. See LWRP Section III—Policies Pages 3 through 6 for evaluation criteria ❑ Yes ❑ No N Not Applicable Attach additional sheets if necessary Policy 3. Enhance visual quality and protect scenic resources throughout the Town of Southold. See LWRP Section III—Policies Pages 6 through 7 for evaluation criteria © Yes ❑ No ❑ Not Applicable e instoll@tion of a living shoreline on Cedar Reach Creek will enhance the vicnal nay and protect the t Cnffoll. County Marine Environmental Learning Center. The living shoreline will consist of the installation of native plants and natural geotextiles.This will enhance the visual quality of Cedar Beach Creek. The living shoreline will prevent erosion and protect the public scenic area. Attach additional sheets if necessary NATURAL COAST POLICIES Policy 4. Minimize loss of life, structures, and natural resources from flooding and erosion. See LWRP Section III—Policies Pages 8 through 16 for evaluation criteria ❑ Yes ❑ No a Not Applicable The living shoreline installation demonstration project will protect Cedar Beach Creek from erosion The project will provide a green model to regulators and community members that can minimize the traditional shoreline hardening(bulkheads,rock revetment,etc.)used for erosion prevention. Attach additional sheets if necessary Policy 5. Protect and improve water quality and supply in the Town of,Southold. See LWRP Section III —Policies Pages 16 through 21 for evaluation criteria E Yes ❑ No ❑Not Applicable The living shoreline demonstration project will protect and improve water quality in the Town of Southold Ribbed mussels(Geukensia demissa)and Spartina altemiflora(cordgrass)will planted as a part of this project. Ribbed mussels are filter feeding shellfish that are known to remove nitrogen and other pathogens from the water which in turn improves water quality. Cordgrass absorbs nutrients as it grows,while preventing beach erosion and providing habitat for a large number of endemic intertidal species Attach additional sheets if necessary Policy 6. Protect and restore the quality and function of the Town of Southold ecosystems including Significant Coastal Fish and Wildlife Habitats and wetlands, See LWRP Section III—Policies; Pages 22 through 32 for evaluation criteria. LJ ❑ ❑ Yes No _ Not Applicable This project will protect and restore the quality and function of the Town of Southold ecosystems including Significant Coastal Fish and Wildlife Habitats and wetlands.Living shorelines are a green infrastructure(natural alternative)that creates an ecosystem that includes nutrient pollution remediation and essential fish habitat provision. Attach additional sheets if necessary' Policy 7. Protect and improve air quality in the Town of Southold. See LWRP Section III — Policies Pages 32 through 34 for evaluation criteria. Yes ❑ No❑ Not Applicable Attach additional sheets if necessary Policy 8. Minimize environmental degradation in Town of Southold from solid waste and hazardous substances and wastes. See LWRP Section III—Policies; Pages 34 through 38 for evaluation criteria. El Yes ❑ No M Not Applicable PUBLIC COAST POLICIES Policy 9. Provide for public access to, and recreational use of, coastal waters, public lands, and public resources of the Town of Southold. See LWRP Section III—Policies; Pages 38 through 46 for evaluation criteria. Ye�] No❑ Not Applicable This project will not restrict public access. Educational public tours will be offered at the project site after the living shoreline is complete. Attach additional sheets if necessary WORKING COAST POLICIES Policy 10. Protect Southold's water-dependent uses and promote siting of new water-dependent uses in suitable locations. See LWRP Section III—Policies; Pages 47 through 56 for evaluation criteria. M Yes ❑ No ❑ Not Applicable The living shoreline demonstration project protects Southold's water dependent use(Cedar Beach County Park)and promotes siting of a new water-dependent use in Cedar Beach Creek. Attach additional sheets if necessary Policy 11. Promote sustainable use of living marine resources in Long Island Sound, the Peconic Estuary and Town waters. See LWRP Section III—Policies; Pages 57 through 62 for evaluation criteria. U Yes ❑ No ❑ Not Applicable ` This project promotes sustainable use of livine marine resources in the Peconic Fstu=and Town waters The living shoreline demonstration eject protects,restores,and enhances habitat.This project will provide a green model to regulators and community members that can minimize the traditional shoreline hardening(bulkheads,rock revetment,etc.)used for erosion prevention to prevent further loss of wetlands(and other habitat) Attach additional sheets if necessary Policy 12. Protect agricultural lands in the Town of Southold. See LWRP Section III—Policies; Pages 62 through 65 for evaluation criteria. ❑ Yes ❑ No© Not Applicable Attach additional sheets if necessary Policy 13. Promote appropriate use and development of energy and mineral resources. See LWRP Section III—Policies; Pages 65 through 68 for evaluation criteria. ❑ Yes ❑ No U Not Applicable PREPARED BY Christophe r.Pickerell TITLE Marine Program DirectorDATE 11/29/18 The Living Shoreline Demonstration Project at Cedar Beach County Park, Southold, New York - Project Plan The proposed Living Shoreline Demonstration Project is a cooperative arrangement between the Town of Southold and Cornell University Cooperative Extension (CCE)to provide physical examples of various options to be used in place of full-scale bulkheads and similar hardened structures, in appropriate locations, to protect residential shorelines. The benefits of living shoreline techniques over traditional shoreline hardening methods include lower installation and maintenance costs, maintaining/creating natural salt marsh habitat, adaptability to natural forces and sea level rise, and maintaining/creating the natural shoreline aesthetic. The goal of this project is to create centralized location where local and regional government agencies (e.g., Town Trustees and NYSDEC) can direct the public to view and learn about alternatives to traditional shoreline hardening methods. The Living Shoreline Demonstration Project will be located in Cedar Beach County Park, Southold,New York. The demonstration site is located along the shores of a dredged canal behind the Suffolk County Environmental Learning Center, operated by CCE(see attached figures. The shoreline includes small, intermittent patches of smooth cordgrass (Spartina alterniora),which, under recommendation from NYDEC Marine Bureau personnel,would be incorporated into the demonstrated living shoreline techniques.As illustrated in the accompanying figures, a total of five (5) demonstration "plots"will be installed along the project area's shoreline.As cordgrass generally occupies the intertidal from mean sea level (MSL)to mean high water (MHW), the natural hardening materials, as described below will be installed just subtidal of MSL. Where cordgrass exists in a demonstration plot,the structural material will be placed just below the existing line of plants (considered MSL).For unvegetated sections of plots, adjacent stands of cordgrass will be used as biological benchmarks and MSL will be marked out on an incoming tide as the water's edge reaches the base of the adjacent cordgrass. For this project, no cordgrass, or other vegetation, will be removed in the creation of the demonstration plots. Unvegetated areas within the demonstration plots (between MSL and MHW)will be planted with cordgrass propagated by CCE from seeds collected from Cedar Beach Creek and maintained in CCE's restoration nursery. Demonstration Plot Descriptions This project proposed the creation of five (5), 60' long demonstration plots along the shoreline of a dredged canal in Cedar Beach Creek.All of the demonstration plots will incorporate natural material to provide a "hardened" component along the seaward edge of the plots, backed by a vegetated component(cordgrass) extending from MSL to MHW.None of the proposed "hardened" structures will extend above the sediment surface by more than 2' (24").Any unvegetated areas upland of the"hardened" structures,will have cordgrass plugs planted at 1'-on-center spacing, up to MHW. The five methods to be demonstrated by this project are described below. 1) Coir/Coconut Fiber Logs—Coir logs are commonly used for erosion control in shoreline projects. Coir logs consist of interwoven coconut fibers encased in a natural, hemp net casing. Coir logs are biodegradable, but are resilient enough to provide at least 2 years of stabilization before breaking down. Typically, this is enough time to establish a band of vegetation behind the logs, which will provide the erosion control once the coir logs have degraded. The coir log demonstration plot will have five (5), 12'-long by 1'-diameter logs deployed just below MSL. Coir logs are typically anchored in place with wooden stakes.The stakes are either driven through the middle of the coir log or are placed in pairs (seaward and landward of the log), sandwiching the log.The coir logs for this project will use the single stake method, due to the sheltered nature of the project location. 1 of 11 2) Shell Bags—Shell is a naturally occurring marine material that has been extensively used for creating subtidal reefs for oyster productions and shoreline protection. Shell used for these types of projects is aged on land to allow any tissue to decay reducing the risk of potentially transmitting disease or creating an attractive nuisance from scavengers (i.e. gulls, raccoons, crabs)when the shell is placed back in the marine environment. The shell bags to be used for this demonstration project will include mixed(oyster, hard clam, and surf clam), aged (6 months) shell, loaded into biodegradable mesh bags. The shell bags will be 2'-long by 1'-diameter and deployed seaward of MSL, stacked with a two bag base and a single bag on top.Due to the weight of the shell bags,there will be no anchoring methods (i.e. staking) required. 3) Rock—Rock has been used for shoreline protection at all scales. For the demonstration project, small rock 4-12"-diameter will be used to create a small, rock"breakwater"just below MSL. The rock would be installed in a similar fashion to the shell bags,with a wide base (< 3'wide) and tapering toward the top (<2'high).Placement of the rock along the 60'length of the demonstration plot will be completed by hand and no anchoring method will be required. 4) Single,Natural-Wood Terrace—Terracing has been used for thousands of years to stabilize slopes. Conventional bulkheads are basically a single tier terrace, and the method described below is similar to a"low-sill" bulkhead.For this demonstration project, it is proposed to construct a single-tier,wooden terrace constructed from natural, native wood logs.Two species of trees grow locally that are highly resistant to rot, even in wet conditions, and are relatively abundant, locally: black locust(Robinia pseudoacacia)and eastern red cedar(Juniperus virginiana). The Town of Southold owns several preserved lands that have a number of windthrown black locust trees that could be used for terrace material. These black locusts would be preferable to cedar as locating dead or windthrown cedar is more difficult and the project would prefer not to cut down living material. The wood material would be cut to manageable lengths and used to create a single terrace,no more than 2'high by 1'wide.The logs would need to be secured in place with wooden stakes/posts, and smaller diameter sections of the logs could be used. The posts would be driven into the shoreline, by hand, at least 3'deep and the horizontally-placed log terrace would be secured to the posts with galvanized hardware. 5) Double,Natural-Wood Terrace—This method would be constructed in a similar fashion to the single, natural-wood terrace detailed above,with the exception of the height and number of terraces.This demonstration plot will include a section of the canal shoreline that has a steeper slope than the other plot areas, and will serve as an example of a technique that can be used in similar circumstances. The two terraces will consist of shorter walls, approximately 1'high, anchored by wood posts and galvanized hardware in the same manner as detail above.The lower terrace will be located just below MSL,with the second terrace installed approximately halfway up the shoreline between MSL and MHW.The double terrace plot is located on a stretch of shoreline that is unvegetated, and cordgrass plugs will be planted into the plot area at 1'-on-center. Ribbed Mussel (Geukensia demissa)Propagation and "Planting" Another proposed aspect of this project is to develop an efficient and reliable methodology for spawning and raising ribbed mussels for shoreline restoration projects.Ribbed mussels are an integral part of the salt marsh complex, providing resilience to the seaward edge of the marsh, improving water quality through filter-feeding, and acting as a food source for a number of animals.While shellfish like oysters could provide mush of the same services as the ribbed mussel, and their propagation is well documented,their use as a component of living shorelines is complicated due to their value as a human delicacy.This is especially problematic in areas where coastal waters are impaired and shellfish harvest/consumption is prohibited. Ribbed mussels do not 2of11 present this permitting challenge as they are not a target food item. CCE plans to continue developing a methodology to spawn ribbed mussels, raise the mussels to an appropriate size for release,then incorporate them into the living shoreline demonstration plots, detailed above. Reported attempts at transplanting ribbed mussels harvested from natural populations for restoration purposes has met with mixed success in the past. Setting ribbed mussels in place at an earlier stage in their life may result in higher success rates.To test this hypothesis, CCE will collect natural-occurring ribbed mussel from Cedar Beach Creek to be used to compare the success of establishing hatchery-raised mussels versus transplanted mussels into living shoreline design. The collection of natural-set ribbed mussels for research should be cover by a Scientific License to Collect or Possess (LCP), and CCE maintains An LCP, which will be amended for 2019 to include collection of ribbed mussels. 3of11 r r � � ♦ .. `d'.a".;,, ' r �rinw � � � � ♦ wd ati'�`d �dYti�'a Yti r'-"e.. oti r+•Aa4 '�}' � war qr6 Y��6 y�e�4 4�1r d9,Ir Ar6�v K•4 �O moi.�4•err d0 J, - - - - - - - - - - - - - - and 5j: L7 ME '� N�p�rtid� dT4�`rti �-rtip�` dam`.r•'���"R'�dcti ' • �°, ••••••• ••• '�•••••• ......... ......■.. ......................... .. . Single, Wood Terrace oub Wood Tell"' •••••••• -y y �byati '•-ay�r.�. Treat nt ••'• •"�� Treatment •••. Proposed locations of demonstration areas, each consisting of 60' sections of shoreline and presenting different Canal materials (labeled and as detailed in plans) to provide stability to shore. 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'•_ . .::.." ♦ � ♦ r r r r ..W& Location: Cedar Beach County Park j 2018 Legend 3690 Cedar Beach Road Southold, NY 11971 ��,{� ��,� � •� "`~° Buildings Date Prepared: 11/27/2018 Bulkheads Wetland Delineation: Fence N Prepared By: Stephen Schott Date Completed: 10/1/2018 Cornell University Cooperative Completed By: Chris Pickerell Existing Spartina Extension, Habitat Restoration Cornell University Cooperative Extension 0 Phragmites Specialist Wetland Specialist I 1 inch = 25 feet Conceptual Diagrams of Proposed Living Shoreline Demonstration Project Treatment Plots - Coir (Coconut) Fiber Logs Coconut Fiber Log Spartina -M-HW-- Coir Fiber I --------MSL Woodenstakes 60ft M LW- Coconut Fiber Log �7 Phragmites DEC Spartina MHW --------------------------- F --------- ---------------- F ------M-SL--------- - Coir fiber log Wooden stake ------M-LW--------------- 4 of 11 Conceptual Diagrams of Proposed Living Shoreline Demonstration Project Treatment Plots - Shellbags (Oyster/Clam) Shell Bag Breakwater Spartina MHW_- MSL Shell Bags 60ft M LW Shell Bag Breakwater Mound 'f DEC 1 9 2018 Spartina I - -- MHW- 29 ------M-SL--------- fff Shell bags (one row over two) 2' ------M-LW--------------- 5 --- MLW--------------- 5 of 11 Conceptual Diagrams of Proposed Living Shoreline Demonstration Project Treatment Plots - Rock Rock Breakwater Spartina MHW Rocks MSL 60ft - MLW- Rock Breakwater 0 E y 2018 Spartina MHW 2' i i ---------MSL----------- --- Rock pile <3' MLW-- -- - - - 6of 11 Conceptual Diagrams of Proposed Living Shoreline Demonstration Project Treatment Plots - Double,Wood (Locust/Cedar Log) Terrace Natural Wood Terrace Spartina MHW-- Wooden logs''. I NMI MSL Wooden stakes 60ft -------LW - Natural Wood Terrace DEC 1 2018 ( ! i Spartina M H W ! Enati�•� 2' ------M-SL-------------- Wooden logs 1' MAIM Wooden stake *Using locust or cedar logs and stakes 7of11 Conceptual Diagrams of Proposed Living Shoreline Demonstration Project Treatment Plots - Single, Wood (Locust/Cedar Log) Terrace Natural Wood Double Terrace Spartina MHW Wooden',,"" MSL Wooden stakes 60ft -------LW--- Natural Wood Double Terrace �'t `' DEC 1 y 2018 ' '1 Spartina MHW i ---- W - e_. © . 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