HomeMy WebLinkAbout2011I
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REPORT
ON THE
WASTE WA TER SYSTEM
OPERA TION AND MAINTENANCE
FOR THE
FISHERS ISLAND
SEWER DISTRICT
B Y: MICHAEL ERRICKSON, P.E.
DTC PROJECT NO. 11-167-300
SEPTEMBER 14, 2011
DIVERSIFIED TECHNOLOGY CONSUL TANTS
2321 WH1TNEYAVENUE, SUITE 301
HAMDEN, CONNECTICUT 06518
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INDEX
Introduction ....................................................................................... Page 1
Background ....................................................................................... Page 2
System General Description .............................................................. Page 2
Maintenance and Operation .............................................................. Page 3
I, General .................................................................................. Page 3
~ Pump Station ......................................................................... Page 3
Community Septic System ................................................................ Page 4
Septic Tanks ...................................................................................... Page 4
~ Community System Tanks .................................................... Page 4
~ Cinema Tank ......................................................................... Page 5
~, Coast Guard Houses Tank ..................................................... Page 5
~ Silver Eel Cove System ......................................................... Page 5
Sewage Collection System ................................................................ Page 5
Observations, Conclusions and Recommendations .......................... Page 6
~, Conclusions ........................................................................... Page 6
~ Recommendations ................................................................. Page 7
Enclosure # 1 Maintenance Check List
Enclosure # 2 Discharge Monitoring Report - Field Report, May 12, 2011
Enclosure # 3 Discharge Monitoring Report DEC - September 8,2011
Enclosure # 4 Operation and Maintenance Field Report - August 11,2011
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INTRODUCTION
This report is written to conform with the requirements which were outlined in Item III of
our contract with the Town of Sunthold on behalf of the Fishers Island Sewer District. It
includes maintenance evaluations of the Fishers Island sewer district sewers, the pump
station and wet well, the commtmity leaching systems, the Cinema septic system and the
septic system which serves the three residences which overlook Silver Eel Cove. In
addition, the pump station and selected sewers were reviewed. The pump station and
community leach field have been upgraded. The Community, Silver Eel Cove and Cinema
Subsurface Disposal Systems were inspected and septage, as well as effluent depths, were
measured in the septic tanks and leaching galleries. The Officer's Service Road manhole
was again observed to be clogged. Four sanitary manholes along the Service Road were
identified to be cleaned. Harold's Construction Company assisted during the field reviews.
The collection system in the area of Officer's Service Road has been added to the annual
review because of sewer clogging in the sanitary manholes during the past several years.
The results of the collection system review are enclosed in Enclosure 4 "Operation and
Maintenance Field Report."
The purpose of the field evaluations and this report are to identify operation and
maintenance issues and requirements. It should be noted that due to the age of the system
and corrosion, some major items were replaced. In order to assist the operator and fulfill a
need, a maintenance checklist has been included in this report. (Reference Enclosure # 1).
This checklist is tailored to normal operation and maintenance requirements.
Although the collection system has functioned well in the past, it will need several manhole
repairs and cleaning to prevent further clogging and backups. It also needs stormwater
removed. Conditions have changed since the smoke testing program about eighteen years
ago that identified catch basins connected in Fox Lane. The Fox Lane catch basins were
removed from the secondary sewer system. However, additional catch basins are connected
in Tyler Lane. Several of the catch basins were disconnected from the Tyler Lane sewer
during construction of the Community Center Building and site.
The pump station and community leach field was upgraded and six (6) catch basins have
been redirected from the sanitary sewer system by the community center so it could be
connected to the system.
The Building 57 was upgraded to an Architectural use equivalent to one residence. Several
additional sources of stormwater were re-routed to their own treatment systems.
Page 1
Fishers Is/and Sewer Distr~ct
Report on the Wastewater System
Operation and Maintenance
During 2011
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BACKGROUND
The Fishers Island sewer district includes the area of the west end of Fishers Island, which
was established during World War II as Fort Wright.
Based upon the 1943 Corps of Engineers map of the system, the sewer system consists of
about two miles of vitrified clay pipe, ranging from 6 inches in diameter to 24 inches. Prior
to 1985, a 24-inch diameter outfall sewer extended into Long Island Sound where raw
wastewater was discharged. The map was traced by the Suffolk County Planning
Department during 1964. Another large map was produced by the Henry Souther
Engineering Company during 1975. The title block was updated by James Sommers, P.E.,
L.S. Several copies of this map have been reproduced by DTC and sent to Louisa Evans for
the District's file and to Harold's Construction Co. for their use. The residents, the highway
department, the Fishers Island Water Department and others can obtain utility information
from the maps.
During the late 1970's and early 1980's F.I.D.C.O. purchased the Fort Wright area from the
Government, and the New York Department of Environmental Conservation (N.Y.D.E.C.)
issued an order to Southold to eliminate the discharge to the Sound. A wastewater facilities
plan, which included an activated sludge treatment plant system, was initially proposed. It
was concluded that a plant would result in excessive operation and maintenance. Therefore,
the current pump station and community septic system was developed, designed and
constructed in compliance with the order. The flow of wastewater into Long Island Sound
was eliminated. The system has consistently met N.Y.D.E.C. discharge monitoring
requirements. (See the Discharge Monitoring Report [DMR]). (Reference: Enclosures #2
and #3).
SYSTEM GENERAL DESCRIPTION
The alternate community septic system scheme was accepted by the N.Y.D.E.C. This plan,
which was implemented during 1985, included installing a pump station adjacent to and
connecting the 24-inch diameter outfall to it via an 8-inch PVC line, plugging the 24-inch
outfall, constructing a large subsurface disposal system near the airport, constructing another
large subsurface disposal system to serve the Cinema and finally, construction of a
subsurface disposal system to serve the three houses which are on the hill above Silver Eel
Cove. The systems were constructed during 1985. Therefore, they are more than 26 years
old. Considering the ages of the systems and mechanical/electrical equipment, they have
served the residents well in the past. The system pump station and colnmunity leach field
were updated during the summer of 2008. Maintenance of the system has become more
important as the system ages.
Page 2
Fishers Island Sawer Distdct
Report on the Wastewater System
Operation and Maintenance
Durtng 2011
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MAINTENANCE AND OPERATION
GENERAL
This section addresses maintenance and operation of the system. The Town of Southold has
contracted Harold's Construction Co. in the past to maintain the system with consultation
and specifications as needed from DTC. Harold's has operated and maintained the system
for years and personnel are familiar with it. During two field reviews of 2011, Harold Cook
and his personnel assisted in obtaining access to facilities, testing them obtaining
measurements and relating important performance information about the system. In
addition, during 2011 Harold's Construction Co. has continued to provide on site services.
The maintenance requirements for the system in order of effort required are: 1) The pump
station and generator, 2) The community leaching field, 3) The sewer collection system, 4)
The Cinema system, and 5) The three Silver Eel Cove residences system. They will be
addressed in the following paragraphs based upon site visits, numerous telephone
conversations and faxes, prior knowledge of the system, and examination of plans and
specifications.
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A. Pump Station
The major components of the pump station are the submersible pumps, the wet-
well, the electrical controls, the valve pit including check valves, isolation plug
valves, a pump station by-pass system, and the generator. The fence, gate, a small
spares storage building, grounds and electrical power distribution equipment are
part of the station. In addition, a new propane tank had been added. The pumps,
generator and transfer switch components have been replaced.
In order to maintain the pump station and order parts, the plans and specifications
are essential.
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The key maintenance requirements include continuous observation of the pumps
and wet-well, checking the valves to assure proper seating of the check valves and
operability of the plug valves, monitoring the elapsed time meters on the pumps to
assure that the pumps are both working, check of vibration of the pumps,
observation of the wet-well for excessive debris and scum, cleaning the valve pit
and wet-well, exercise the generator, replace components in the electrical control
system when they fail or failure is eminent. During the recent upgrade of the
system, the station was repainted. Rust should be under control for several years.
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Page 3
Fishers Island Sewer District
Reporf on the Wastewater System
Operation and Maintenance
During 2011
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During May 12, 2011 and August 11, 2011, the writer visually inspected the
pump station and other parts of the wastewater system. The primary purpose
during May was to obtain flows for the annual Discharge Monitoring Report
(DMR) for the N.Y.D.E.C. During this work, the pump station was evaluated.
The pumps operated satisfactory.
During 2008, The Pinder Construction Company upgraded the pump station and
leach field. All systems worked without failure since the upgrade except the
generator transfer switch required maintenance. The reaction time was expanded
to prevent false starts. The generator continues to start independent of main
power loss according to Harold Cook. The false starting was not observed during
the field reviews by DTC.
B. Community Septic System
The major components of the community septic system are three, 10,000-gallon
septic tanks and 4-feet. x 4-feet. deep concrete leaching galleries which form 14
rows of a flow distribution system. The wastewater flows from the pump station
to the tanks. The grit and septage are removed in the tanks where it settles to the
bottoms. The wastewater flows from the tanks into a distribution system and into
the 14 sets of leaching galleries.
The community leaching system was visited twice, once May 12, 2011 and once
during August 11,2011 in order to inspect various system components.
The inlet distribution, the tanks, the outlet distribution and the 14 rows of
leaching galleys were inspected. The depths of sludge were determined. The
results are in Enclosure # 4.
Distribution to the leaching chambers was observed. (See Enclosure # 4). In
general, some of the western 60 foot and 100 foot long galleys were filled. The
eastern galleys were not. The flow is higher to the west. The flow distribution is
off balance.
Inlets 2, 3 and 4 of the 100 foot galleys had 33 inches, 36 inches and 36 inches of
wastewater respectively. See Enclosure # 4. These deep waters are due to
clogging of the center and eastern galleys.
C. Septic Tanks
Community Tanks
The three 10,000 gallon tanks were pumped during July 2011 to remove sludge
because they were filled to near excessive depths.
Fishers I~land Sewer District
Report on the Wastewater System
Operation and Maintenance
During 2011
Page 4
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During August 11, 2011, sludge depths were measured in the three tanks.
All of the sludge depths are shown in the Field Report of August 11,2011. (See
Enclosure # 4)
Cinema Tanks
The Cinema System consists of a 1,500-gallon septic tank followed by four by
four leaching chambers. Inspection of it reveals it is in excellent condition and
does not need improvements. Septage levels are very low.
Coast Guard Houses Tank (Silver Eel Cove)
The tank which serves the three Coast Guard houses is 2,000 gallons. It is
concrete and is in good condition. The septage is deep and was pumped by
Suburban Sanitation on September 8, 2011.
D. Silver Eel Cove System (3 Houses)
This system serves three residences, which in the past were owned by the Coast
Guard. This system consists of a 2,000-gallon septic tank and a large precast
concrete leaching system consisting of large leaching chambers "Beehives". It is
in excellent condition. No improvements are required. However, septage is deep
in the inlet and outlet. This system was pumped by Suburban Sanitation on
September 8, 2011. (See Enclosure # 4)
E. Sewage Collection System
The existing system consists of vitrified clay pipe, which normally cracks at the
bells or female fittings. Normally, groundwater flows into the system through
these cracks. This does not appear to be the case for the Fishers Island System.
However, stormwater catch basins near Tyler Lane are connected into the system
and contribute substantial amounts of inflow during rainstorms. (Several were
recently removed). Elimination of this stormwater from the system was brought
to the attention of the Town of Southhold after smoke testing the system 18 years
ago. A letter was issued by A.R. Lombardi Associates requesting the repair and
funding. It has been addressed because it costs to pump the extraneous water and
it taxes facilities including the community leaching field. Sanitary manholes in
the Officers Service Road were inspected August 11, 2011. Four sanitary
manholes should be pumped out because it is filling with debris. Two manholes
were pumped by Suburban Sanitation on September 8, 2011. A little gravel
should be removed from another one and the top of one near landscape boulders
should be repaired. Note: Clusters of cloth were found in two manholes
Fishers Island Sawer Dist#ct
Report on the Wastewater System
Operation and Maintenance
During 201't
Page 5
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downstream of the apartment house at the end of the system. Cloth was found to
a lesser extent at the community leach field inlet.
Observations, Conclusions and Recommendations
Conclusions
During periods of non-rainfall and even during periods immediately following
rainstorms, the flow drops down. This indicates that the groundwater table is low
or it is not leaking into the sewers.
During 2001, the first clogging of the Officer's service road sewer with rags
occurred and was resolved. The clogging of manholes with cloth, debris and
pebbles has continued. During last year, the sewer had to be cleaned to unclog it.
The manholes in the Officers Service Road should be monitored and cleaned
before back up occurs again. (The obvious one is the service road sanitary
manhole that services the State Police Building). The other one is downstream
from apartments. The manhole was observed to be clogged and backing up into
the upstream sewer. If not taken care of, this can result in basement flooding.
During August 2011, the aforementioned manholes were again clogging. Cloth
like material was observed.
The community leaching system distribution is not acceptable. It appears that the
west galleries are heavier loaded. Several are loaded beyond their capacities.
High flows occur during rain storms. Therefore, some storm sewers are
connected to the sanitary sewer system.
Based upon review of August 11,2011, the following can be concluded:
Clogged manholes in Officer's service road must be cleaned,
inspected and rebuild inverts if necessary.
Upstream users must refrain from flushing materials like cloth
down toilets.
Pump out of septage from the three residential system near the
Silver Eel Cove system must be done. This work was completed
September 8, 2011.
The pump station was upgraded during 2008 to better handle flows.
Twice a year, maintenance of the pump station and generator by
equipment suppliers will help to extend equipment life.
Page 6
Fishers Island Sewer District
Report on the Wastewater System
Operation and Maintenance
During 2011
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,/ The community leach field was mowed over the entire system. The
strip of trees has been removed.
Stormwater flows to the sanitary system.
The flow to the community system is higher to the west.
The telephone and alarm horn are discormected.
The electrical meter glass is broken.
Recommendations
· / Remove solid cloth material from surface of wet-well when it
accumulates.
q' Community Septic Tanks: Monitor sludge depths.
ff Remove material from the manhole near the Officer's service road
(parallel to Whistler Avenue) and opposite the State Patrol Office
Building, and the manholes downstream of that manhole. Two
manholes on the service road were pumped September 8, 2011.
This area should continue to be monitored for accumulation of rag
material.
ff Advise system users to refrain from flushing rags and similar debris
down their toilets.
~ Remove cloth material from the first distribution box at the
community leach field.
· / Continue to remove sources of stormwater from the sewers.
,/ Keep records on propane use.
,/ Carry out contract operations and maintenance.
,/ Upgrade rusted by-pass connection at the pump station.
· / Get Fishers Island Electric, Inc. to replace the electrical meter box.
~ Design and specify replacements for the center and eastern
distribution piping.
ff Fill in surface of the community leach field at the end of two
galleries.
· / Reconnect telephone signal and alarm horn at pump station.
Note: Due to the recent upgrades of the pump station and wet-well, the list of
maintenance items is shorter.
Page 7
Fishers Island Sewer Distdct
Report on the Wastewater System
Operation and Maintenance
During 2011
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ENCLOSURE # 1
MAINTENANCE CHECK LIST
FISHERS ISLAND WASTEWATER SYSTEM
MAINTENANCE CHECKLIST
MAINTENANCE CHECK PERIOD
ITEM DAILY WEEKLY MONTHLY QUARTERLY SEMI-ANNUALLY ANNUALLY
1. Standby Generator (include check of fuel X
level))
2. Sensors and Alarm System X
3. Power Usage Records X (DTC)
4. Flow Total X
$. Flow Rate X (DTC)
6. Automatic Transfer Switch X
7. Transducer System X
8. Pumps, Motor, Controls X
9. Remove Solids from Wet-Well Liquid X
Surface
10. Exercise Plug Valves* X
11. Observe Check Valves* X
12. Main Pump Mechanical (Check Alarm Light) X
13. Station Cleanliness X
14. Check Wet-Well Solids X
15. Check Community System Inlet Distribution X
16. Facilities Condition X
17. Mow Lawn/Brush As Needed
18. Wet-Well Cleanout As Needed
19. System Inspection I X (with DTC)
20. Pump Out Septic Tanks As Needed
21. Inspect Septic Systems X (with DTC)
22. Pump Tests to Determine Capacity X (with DTC)
* In Valve Pit
Note: All weekly items can be inspected during the weekly generator start-up. Visual observations are necessary.
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ENCLOSURE # 2
DISCHARGE MONITORING REPORT
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FIELD REPORT, MAY 12, 2011
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ENGINEERED
SOLUTIONS
LAND
STRUCTURES
WATER
LETTER OF TRANSMITTAL
To: Harold Cook
Harold's LLC
Whistler Avenue
P.O. Box 861
Fishers Island, New York 06390
(631) 788-5550
WE ARE SENDING You: [-~ Attached
DATE:
PROJECT NO.
RE:
5/31/2011
11-167-200 & 400
Fishers Island Sewer Distdct
UNDER SEPARATE COVER
SPECIFICATIONS ~ COPY OF LETTER
CHANGE ORDER SHOP DRAWINGS
DRAWINGS OTHER
REPORTS
0/1 5/12/11 Field Report of May 12, 2011
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THESE ARE TRANSMITTED AS CHECKED BELOW:
FOR APPROVAL ~ APPROVEDASSUBMI~rED ~ RESUBMIT
FOR YOUR USE APPROVED AS NOTED SUBMIT
AS REQUESTED RETURNED FOR CORRECTIONS RETURN
FOR REVIEWAND COMMENT OTHER
COPIES FOR APPROVAL
COPIES FOR DISTRIBUTION
CORRECTED PRINTS
REMARKS:
COPYTO; FILE SIGNED: MICHAEL D. ERRICKSON, PE
KM
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IF ENCLOSURES ARE NOT AS NOTED, KINDLY NOTIFY US AT ONCE.
P:~.011\11167-FISHERS ISLAND SEWER DISTRICT\DOCUMENTS\TRANSMI~CrALS\05-31-11 HAROLD COOK FIELD
REPORT 5-12-11 .DOC
2321 WHITNEY AVENUE SUITE 301 HAMDEN CT 06518
203 239 4200 PH 203 234 7376 FAX
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ENGIN[:£RED
SOLUTIONS
FIELD
REPORT
LAND
STRUCTURES
WATER
May 12, 2011
DATE TIME ON SITE WEATHER
Fishers Island
LOCATION
Bdan Tillis, Harold's Construction Company
Michael Erdckson, PE, DTC
Michael Home, PE, DTC
FIELD CREW
Michael Home, PE
REPORT BY
Fishers Island 11-167-200 and 11-167-400
PROJECT NAME / PROJECT NUMBER
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I. Pump Station Flow
8:05 a.m.
10 sec.
13 sec.
13 sec.
36 sec.
12 sec. 15 gpm.
8:56 a.m.
15 sec.
16 sec.
15 sec.
15 sec. 12 gpm.
9:53 a.m.
33 sec.
26 sec.
27 sec.
28 sec. 6 42 gpm.
10:55 a.m.
97 sec.
50 sec.
50 sec.
49 sec. 3.67 ,qpm.
11:59 a.m.
58 sec.
55 sec.
50 sec.
54 sec. 3.33 gpm.
2321 WHITNEY AVENUE SUITE 301 HAMDEN CT 06518
203 239 4200 PH 203 234 7376 FAX
PAGE I OF 4
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ENGINEERED
SOLUTIONS
LAND
STRUCTURES
WATER
12:56 p.m.
1:50 p.m.
2:48 p.m.
3:45 p.m.
FIELD REPORT
63 sec.
59 sec.
57 sec.
60 sec. 3 ,qpm.
49 sec.
48 sec.
47 sec.
48 sec. 3 75 ,qpm.
57 sec. (inflow est. 1 gpm.)
55 sec.
58 sec.
56 sec. 3.21 gpm.
64sec.
67 sec,
67 sec.
65 sec. 2.77 Rpm.
Average: 5.90 gpm.
4:00 - 6:00 p.m. est. 2.77 gpm.
6:00 - 9:00 p.m. est. 6 gpm.
9:00 p.m. - 8:00 a.m. 3 gpm.
[(5.90 x 9) + (2.77 x 2) + (6 gpm. X 3 ) + (3 gpm x 10) - (1 gpm x 24 inflow)] / 24 = 3.44 gpm
3.44 gpm x 1,440 = 4,954 gpd
II. Pump Station Review
Vault pipe: Bypass pipe is rusted.
Check valve appears to be operating satisfactorily.
Check valve is holding based on wet-well review.
Pump: Sounds good during pump down.
No vibration during pump down.
Generator: Not activated all day.
Site: Needs weed control.
Needs branches cut.
Needs mowing.
2321 WHITNEY AVENUE SUITE 301 HAMDEN CT 06518
PAGE 2 OF 4
203 239 4200 PH 203 234 7376 FAX
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ENGINE£RED
SOLUTIONS
LAN D
STRUCTURES
WATER
FIELD REPORT
III.
Electrical Meter: Glass housing broken - Replace it.
Wet-Well: Some debris on top of wastewater.
Overall Condition: Good
Community Leach Field
Inlet distribution box needs cleaning, especially in outlet pipe ends.
Outlet distribution box surcharged to the east, heavy flow to the west.
· Sludge depths:
West Tank Inlet 37" deep
Center Tank Inlet 18" deep
East Tank Inlet 17" deep
outlet 26" deep
outlet 26" deep
outlet 31" deep
All three outlet compartments need pumping and the west tank inlet needs pumping. · GalleriesWastewater Depths
60 footers East
#1 3" depth dribble in
#2 1" depth dribble in
#3 1" depth dribble in
1 O0 footers East
#1 1" flow into inlet
#2 1" deep, no flow
#3 Dry
Wet, no flow
60 footers West
#1 Dry
#2 Full to top of 4 x 4
#3 7", no flow
100 footers West
#1 1" flow ddbble
#2 19' flow
#3 38" flow
#4 21" high flow
2321 WHITNEY AVENUE SUITE 301 HAMDEN CT 06518
203 239 4200 PH 203 234 7376 FAX
PAGE 3 OF 4
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IV.
VI.
VII.
CC:
ENGINEERED
SOLUTIONS
LAND
STRUCTURES
WATER
FIELD REPORT
Cinema
Inlet sludge 2", outlet sludge 1"
We understand this facility is no longer in use.
Three Cottage System (Silver Eel Cover)
Inlet scum 4" deep, sludge 26" deep.
Outlet scum 2" deep, sludge 14' deep.
~ This system needs pumping immediately. The sludge has been deep for several
years.
Manhole - Near Service Road - serves Police Station and Upstream
About % of the length of the invert has sludge in it.
Some cloth-like material was observed.
The manhole should be cleaned and debris pumped out.
Soil Gravel and Boulder Piles
It appears that the contractor is removing large amounts of soil, gravel and boulders
from the area between Fox Run Road and Tyler Street. Based upon a review of the site
and the sewer map, several sanitary manholes may be covered. Therefore, the
contractor must be aware that he cannot dig into the grade that existed pdor to his
stockpiling the materials. In the distant past, a contractor "smashed" in a manhole
structure during demolition.
Miscellaneous
We checked samples of materials in the community field distribution box. Pieces of what
appeared to be cotton and plastic were hung up on the outlet handles. It is the
conclusion that the materials are getting through the system. This has occurred during
the last 3 to 5 years.
Louisa Evans, Esq.
Gordon Murphy
Harold Cook
Michael Errickson, PE
Michael Horne, PE
p:~2011\11167-fishers island sewer distfict\d ocuments\reports\05-12-11 field report.doc
2321 WHITNEY AVENUE SUITE 301 HAMDEN CT 06518
203 239 4200 PH 203 234 737($ FAX
PAGE 4 OF 4
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ENCLOSURE # 3
DISCHARGE MONITORING REPORT - DEC
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SEPTEMBER 8, 2011
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ENGINEERED
SOLUTIONS
LAND
STRUCTURES
WATER
September 8, 2011
Mr. Scott A. Russell, Supervisor
Town of Southold
Town Hall
P.O. Box 1179
53095 Route 25
Southold, New York 11971
Discharge Monitoring Report
Fishers Island New York Wastewater Systems
NYS-SPDES DIvlR N.Y. 0.199214
DTC Project No. 11-167-200
Dear Mr. Russell:
In conformance with our contract, we are pleased to submit the Discharge Monitoring Report for the
Fishers Island Wastewater Disposal Systems. The sludge depths for the septic systems 001,002 and 003
as shown in Table 1, and the estimated wastewater flow rates for systems 001, 002, and 003 based on
flow monitoring are shown in Table 2.
We are sending copies to Justice Louisa Evans, as well as the listed State and County officials for their
records.
Sincerely,
ERS1FIED TECHNOLOGY CONSULTANTS
'Ph~.
Chairmagxand Chief Executive Officer
Michael Errickson, P.E.
Enclosures: Table I and Table 2
cc with enclosures:
Mr. Gordon Murphy, FISD
Louisa Evans, Esquire
Mr. Dilip Banerjee, Department of Conservation, Region 1
N. G. Kaul, Director, DEC
Mr. Isador Doroski, Suffolk County Department of Health Services
P:X2011\11167-Fishers Island Sewer District\documents~Reports~Discharge Monitoring Report 9-8-11\09-08-11 Russell Letter doc
2321 WHITNEY AVENUE SUITE 301 HAMDEN CT 06518
203 239 '~200 PH 203 234 7376 FAX
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FISHER'S ISLAND WASTEWTER SYSTEM
FACILITY iD NUMBER - NEW YORK 0.199214
TABLE 1
SHOWING SEPTIC TANK CONDITIONS FOR
SYSTEMS 001,002 AND 003
September 8, 2011
System Description
(001) Community Septic System
3 10,000 Gallon Concrete
Septic Tanks 12 Feet High,
10 Feet Liquid Level Depth,
20 Feet 6 Inches Long
Septage Conditions
West Tank Inlet Compartment
Outlet Compartment
Thin Scum Layer
Negligible Scum
17" Deep Septage
23" Deep Septage
Middle Tank
Inlet Compartment
Outlet Compartment
Thin Scum Layer
Thin Scum Layer
17" Deep Septage
23" Deep Septage
East Tank
Inlet Compartment
Outlet Compartment
Thin Scum Layer
No Scum
18" Deep Septage
23" Septage
(002) Cinema Septic System
1 1,500 Gallon Concrete
Septic Tank 7 Feet High
10 Feet 6 Inches Long, 5 Feet 4 Inches Liquid Depth
Septage Conditions
Inlet Compartment
Outlet Compartment
No Flow in System
Thin Scum Layer
1" Scum
1" :k Deep Septage
1" ± Deep Septage
(003) Three Cottages Septic System
1 2,000 Gallon Concrete
Septic Tank 7 Feet High,
11 Feet Long, 5 Feet 4 Inches Liquid Depth
Inlet Compartment
Outlet Compartment
6" Scum/Debris
2" Scum/Debris
26" Deep Septage
16" Deep Septage
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TABLE 2
ESTIMATED WASTEWATER FLOWS
(SEWAGE ONLY)
SEPTIC SYSTEM SEASON
001 Summer
Winter
FLOW (AVERAGE
GALLONS/DAY)
8,093 gpd
4,954 gpd
002 Summer
Winter
003 Summer
Winter
700 gpd
7gpd
550gpd
250gpd
ESTEMATED TOTAL FLOWS
(INCLUDING EXTRANEOUS FLOWS)
001 Summer 15,293 gpd
Winter 8,704 gpd
002 Summer 700 gpd
Winter 7 gpd
003 Summer 550 gpd
Winter 250 gpd
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ENCLOSURE # 4
OPERATION AND MAINTENANCE
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FIELD REPORT, AUGUST 11,
2011
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ENGINEERED
SOLUTIONS
FIELD
REPORT
LAND
STRUCTURES
WATER
August 11, 2011
DATE TIME ON SITE WEATHER
Fishers Island, New York
LOCATION
Brian Tillis, Harold's Construction Company
Sean Laudati, DTC
Michael Home, PE, DTC
FIELD CREW
Michael Home, PE
REPORT BY
Fishers Island 11-167-200 and 11-167-300
PROJECT NAME / PROJECT NUMBER
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Note: Rained hard eadier in the week.
I. Pump Station Flow
7:59 a.m.
51.8
50.2
45.8
49.23 sec. ave.
3.7 gpm
9:00 a.m.
22.6
18.5
21.7
20.93 sec. ave.
4.6 gpm
10.00 a.m.
16.3
18.5
20.8
18.53 sec. ave
9.7 gpm
11:00 a.m.
22.1
24.2
22.4.
22.9 sec. ave.
7.86 gpm
12:00 p.m.
43.7
48.6
46.7
46.35 sec. ave.
3.88 gpm
2321 WHITNEY AVENUE SUITE 301 HAMDEN CT 06518
203 239 4200 PH 203 234 7376 FAX
PAGE I OF 4
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ENGINEERED
SOLUTIONS
FIELD
REPORT
LAND
STRUCTURES
WATER
1:00 p.m.
4.81
44.5
41.0
42.43 sec. ave.
4.24 gpm
2:00 p.m.
62.3
58.1
56.8
59.07 sec. ave.
3.04 gpm
3:00 p.m.
30.9
30.7
30.79
30.77 sec. ave.
5.8 gpm
3:45 p.m.
49.7
47.1
48.2
48.33 ave. sec.
3.72 gpm
Ave. 9 hours = 5.62 gpm
Est. ave. 13 hours, 5~62 gpm
8,092.8 gallons per day
I1.
Pump Station Review
Brush - cleared in and around station.
Vault pipe - by-pass rust removed.
Check valves - sealing tight.
Pumps - sound good.
Electrical Meter- Broken glass cover.
Generator - Never started by default.
III.
Community Leach Field
· Inlet distribution box cleaner than last review.
· Right west inlet manhole clean except one chunk of debris.
· East inlet manhole clean.
· Small trees in center of the leach field were removed.
2321 WHITNEY AVENUE SUITE 301 HAMDEN CT 06518
203 239 4200 PH 203 234 7376 FAX
PAGE 2 OF 4
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!
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ENGINEERED
SOLUTIONS
FIELD
REPORT
LAND
STRUCTURES
WATER
Sludge Depths:
West Tank Inlet 17" sludge
Center Tank Inlet 17" sludge
East Tank Inlet 18" sludge
Outlet 23" sludge
Outlet 23" sludge
Outlet 23" sludge
West Tank Inlet 37" deep and East Tank Outlet 31" deep have been pumped
down.
Outlet distribution box - Surcharge to the east and center galleries. Must fix.
Galley Wastewater Depths:
60 Footers East
#1 Ponded 1"
#2 Ponded 1"
#3 Ponded 2", dribble
100 Footers East
#1 Ponded 2" flowing
#2 Ponded 1" flowing
#3 No flow - ground caved in near manhole
#4 Ponding
NOTE: 20 ft. to 30 ft. from manhole to brush.
60 Footers West
#1 Dry
#2 2" Pond, dribble
#3 Dry
100 Footers West
#1 Flow, 2" pond
#2 Flow 33" deep
#3 Flow 36" deep
$4 Flow 36" deep
West 100 footer # 3 has hole in ground 1-2 ' deep,
2321 WHITNEY AVENUE SUITE 301 HAMDEN CT 06618
203 23g 4200 PH 203 234 7376 FAX
PAGE 3 OF 4
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IV.
VI.
VII.
ENGINEERED
SOLUTIONS
LAND
STRUCTURES
WATER
FIELD REPORT
Manholes in Service Road
#1 Clean
#2 Diapers or similar in manhole
#3 Invert clean
ff.4 Some debris
#5 Needs pumping
#6 Needs pumping (near Service Road serves Police Station)
Painted top yellow spots to pump.
Cinema Septic Tank
inlet sludge 1" Outlet sludge 1"
Three Cottage System
Inlet sludge 26" Outlet sludge 16"
Need to be pumped.
Soil, Gravel and Boulder Piles
Contractor must proceed with caution. Weeds are growing in the piles. The underlying
sewer systems must be preserved.
CC:
Louisa Evans, Esq.
Gordon Murphy
Harold Cook
Michael Errickson, PE
Michael Horne, PE
p:~2011\11167-fishers island sewer dist dct\documents\reports\0~- 11-11 field report.doc
2321 WHITNEY AVENUE SUITE 301 HAMDEN CT 06518
203 239 4200 PH 203 234 7376 FAX
PAGE 4 OF 4