HomeMy WebLinkAbout2009I
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REPORT
ON THE
WASTEWATER SYSTEM
OPERATION AND MAINTENANCE
FOR THE
FISHERS ISLAND
SEWER DISTRICT
BY:
MICHAEL A. HORNE, M.S., P.E.
DTC PROJECT NO. 09-101-200
SEPTEMBER 2009
DIVERSIFIED TECHNOLOGY CONSULTANTS
2321 WHITNEY AVENUE, SUITE 301
HAMDEN, CONNECTICUT 06518
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m INDEX
m Introduction ............................................................................. Page 1
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Background ............................................................................ Page 2
System General Description ................................................... Page 2
Maintenance and Operation ................................................... Page 3
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I, General ........................................................................ Page 3
~ Pump Station ............................................................... Page 3
Community Septic System ..................................................... Page 4
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Septic Tanks ........................................................................... Page 5
~ Community System Tanks ........................................... Page 5
~ Cinema Tank ............................................................... Page 5
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~ 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
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~ Recommendations ....................................................... Page 7
Enclosure # 1 Maintenance Check List
Enclosure # 2 Discharge Monitoring Report - Field Report, April 16, 2009
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Enclosure # 3 Discharge Monitoring Report DEC - May 12, 2009
Enclosure # 4 Operation and Maintenance Field Report - September 28, 2009
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INTRODUCTION
This report is written to conform with the requirements which were outlined in Item II
of our contract with the Town of Southold 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 community 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. 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 sixteen 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.
The pump station and community leach field have been 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..
P~el
Fishers Island Sewer Dist~fct
Report on the Wastewater System
Operation and Maintenance
Dudng
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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 Wdght.
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 dudng 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 (NY.D.E.C.) issued an order to Southold to eliminate the discharge to
the Sound. ^ 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 24 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 community leach field were updated
Page 2
Fishers Island Sewer Distdd
Repo~ on the Westewater System
Operation and Maintenance
~)udng 2009
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during the summer of 2008. Maintenance of the system has become moro
important as the system ages.
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 roviews of 2009, Harold Cook and his personnel assisted in
obtaining access to facilities, testing them obtaining measuroments and rolating
important performance information about the system. In addition, during 2009
Harold's Construction Co. has continued to provide on site services.
The maintenance roquiroments for the system in order of effort roquirod are: 1)
The pump station and generator, 2) The community leaching field, 3) The sewer
collection system, 4) The Cinema system, and 5) The throe Silver Eel Cove
rosidences 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.
A. Pump Station
The major components of the pump station aro 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 aro part of the station. In addition, a new
propane tank had been added. The pumps, generator and transfer switch
components have been roplaced.
In order to maintain the pump station and order parts, the plans and
specifications are essential.
The key maintenance requirements include continuous observation of the
pumps and wet-well, checking the valves to assuro 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 aro both working,
check of vibration of the pumps, observation of the wet-well for excessive
Fishers Island Sewer Dis#fct
Report ~n the Wastewater System
Opera~ and Maintenance
Dudng 2009
Page ~
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debris and scum, cleaning the valve pit and wet-well, exemise 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.
During April 2009 and September 2009, the writer visually inspected the
pump station and other parts of the wastewater system. The primary
purpose during April 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, 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.
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 April 16, 2009
and once dudng September 28, 2009 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
partially filled. The eastern galleys were not.
Inlet 2 of the western 60 foot galleys had 17 inches of wastewater in them.
Inlets 2, 3 and 4 of the 100 foot galleys had 17 inches, 26 inches and 14
inches of wastewater respectively. See Enclosure # 4.
P~e4
Fishers Island Sewer District
Repo/t on the Westewater System
Opera~en and Maintenance
During 2009
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C. Septic Tanks
Community Tanks
The three 10,000 gallon tanks were pumped during July 2008 to remove
sludge because they were filled to near excessive depths.
During September 28, 2009, sludge depths were measured in the three
tanks.
All of the sludge depths are shown in the Field Report of September 28,
2009 (See Enclosure # 4). However, the east tank inlet had 25 inches
deep septage in it, and the center one had 25 inches in the inlet and 26
inches in the outlet.
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 Iow.
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.
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. It is in excellent condition. No improvements are required.
However, septage is deep in the inlet and outlet. This system requires
pumping. (See Enclosure # 4).
E. Sewage Collection System
The existing system consists of vitrified clay pipe, which normally cracks at
the bells or female rittings. 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
Fishers Island Sewer Distrfct
Report on the Wastewaier System
OperaU~n and Maintenance
Dudng 2009
Page 5
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stormwater from the system was brought to the attention of the Town of
Southhold after smoke testing the system 16 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 September 28, 2009. One
sanitary manhole should be pumped out because it is filling with debris. 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 downstream of the apartment house at the end of
the system. Cloth was found to a lesser extent at the community leach
field inlet.
F. Observations, Conclusions and Recommendations
Conclusions
Dudng periods of non-rainfall and even during periods immediately
following rainstorms, the flow drops down. This indicates that the
groundwater table is Iow 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 paper, debris
and pebbles has continued. During this 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 September 28,
2009, the aforementioned manholes were again clogging. Cloth like
material was observed.
The community leaching system distribution is acceptable. However, it
appears that the west galleries are heavier loaded. Several are loaded
beyond their capacities.
Based upon review of September 2008, the following can be concluded:
Clogged manholes in Officer's service road must be cleaned,
inspected and rebuilt inverts if necessary.
Upstream users must refrain from flushing materials like cloth
down the toilet.
Fishers Island Sewer Oistd(:t
Report on the Wasteweter System
Operation and Maintenance
During 2009
Page 6
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The flow distribution into the three tanks was unbalanced
slightly.
Pump out of septage from the three residential system near
the Silver Eel Cove system should be done.
The pump station and leach field have been upgraded to
better handle flows.
Open manholes in the community system have been covered
with new frames and covers.
Twice a year, maintenance of the pump station and generator
by equipment suppliers will help to extend equipment life.
The community leach field was mowed over the entire
system.
Recommendations
v' Remove solid cloth material from surface of wet-well when it
accumulates.
v' Community Septic Tanks: Remove sludge from the center
inlet, the east inlet and east outlet.
v~ Pump out the septic tank at Silver Eel Cove residence system
as soon as is practicable.
v' Remove material from the manhole near the Officer's Service
Road (parallel to Whistler Avenue) and opposite the State
Patrol Office Building, and the manhole downstream of the
apartment complex.
v' Advise system users to refrain from flushing rags and similar
debris down their toilets.
v' Remove cloth material from the distribution box.
· / Keep records on propane use.
v' Carry out contract operations and maintenance.
Note: Due to the recent upgrades of the pump station and wet-well,
the list of maintenance items is shorter.
Page 7
Fishe~ Island Sewer Dist~ct
Report on the Wastewater System
Operation and Maintenance
Du#ng 2009
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ENCLOSURE # 1
MAINTENANCE CHECK LIST
m ~m, mm mm m m m .m, m m mm m m m m ~. m m m
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
5. 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 Plu~ 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 generater start-up. Visual observations are necessary.
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ENCLOSURE # 2
DISCHARGE MONITORING REPORT
FIELD REPORT, APRIL 16, 2009
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FIELD REPORT
April 16, 200916 8:00 a.m. Sunny
DATE TIME ON SITE WEATHER
Fishers Island
LOCATION
Field Measurements
SUBJECT
Michael A. Home, P.E.
REPORT BY
Fishers Island Discharge Monitoring Reports 09-101-100
Page 1 of 2
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PROJECT NAME I PROJECT NUMBER
Attendees: Mike Home, PE, DTC
Joshua Fiord, Harold's Construction Co.
Pump Station Flows:
8:00 a.m.:
9:13 a.m.
10:13 a.m.
11:07 a.m.
12:08 a.m.
1:04 p.m.
2.03 p.m.
3.06 p.m.
3:34 p.m.
90 sec, 79 sec, 82 sec. = Ave. 84 sec. = 2.14 gpm.
48 sec, 48 sec, 46 sec. = Ave. 47 sec. = 3.85 gpm.
55 sec, 52 sec, 59 sec. = Ave. 55 sec. = 3.26 gpm.
83sec, 78 sec,
84sec, 87 sec,
59 sec, 60 sec,
82 sec, 73 sec,
43 sec, 42 sec,
68 sec, 77 sec,
83 sec. = Ave. 81 sec. = 2.22 gpm.
80 sec. = Ave. 84 sec. = 2.14 gpm.
57 sec. = Ave. 59 sec. = 3.05 gpm.
93 sec. = Ave. 83 sec. = 2.16 gpm.
39 sec. = Ave. 41 sec. = 4.39 gpm.
74 sec. = ave. 73 sec. = 2.96 ,qpm.
2.85 gpm
2.85 Rpm x 12 hours + 2.14 .qpom x 12 hours
24 hours
34.2 + 25.68 = 2.49 Rpm = 3,592 .qpd.
24 hours
Winter wastewater including infiltration is 3,592 ,qpd.
II. Community System
1=t SMH West, 3" high clog.
Im SMH East, Clean
Average
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FIELD REPORT
Septic Tanks Slud.qe Depths:
East Center
West
In 31' 32" 34'
Out 12" 19" 14"
Distribution Chamber:
· Light flow east.
· Low flow straight ahead.
· Heavy flow west.
Leach Galleries:
#1 60 East Dry #1
#2 60 East Dry #2
#3 60 East Dribble #3
60 West Dry
60 West Substantial Flow
60 West Damp
Page 2 of 2
100 West Dry
100 West Flow 20' Deep
100 West Flow 34" Deep
100 West Flow 10' Deep
#1 100 East, Heavy Flow 6" Deep
~2 100 East, Heavy Flow 6" Deep
-#3 100 East, No Flow, Dry
#4 100 East, No Flow, Damp
III. Cinema Septic Tank
In, 6" Sludge
Out, ½" Sludge
IV. Silver Eel Cove Septic Tank
In, 17" Sludge
Out, 18" Sludge
V. Officers Service Road
· Reviewed three (3) manholes.
· Storm sewer is separate.
· Manhole opposite State Officers Building is filled in the bottom with rags.
VI. Conclusions
1) Pump septage out of community leach field and Silver Eel Cove septic tanks.
2) Remove rags from manhole near Officers Service Road.
3) Pump station flow is within past flow rates.
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ENCLOSURE # 3
DISCHARGE MONITORING REPORT-
DEC
MAY 12, 2009
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May 12, 2009
Mr. Scott A. Russell
Supervisor
Town of Southold
Town Hall
53095 Route 25
Southold, New York 11971
Discharge Monitoring Report
Fishers Island New York Wastewater Systems
NYS-SPDES DMR N.Y. 0.199214
DTC Project No. 09-101-100
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 rotes 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,
DIVERSIFIED TECHNOLOGY CONSULTANTS
Murali Atluru, Ph.D., P.E.
Chairman and Chief Executive Officer
Michael A. Home, M.S., P.E.
Associate
Enclosures: Table 1 and Table 2
cc with enclosures:
Justice Louisa Evans, Esquire
Mr. Dilip Banerjee, Department of Conservation, Region 1
N. G. Kaul, Director, DEC
Mr. Isador Doroski, Suffolk County Departmem of Health Services
S:\09101 Fishers islandkDischarge Monitoring Report\05-124)9-Russell rpt.doe
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West Tank
Middle Tank
East Tank
HSIIER'S ISLAND WASTEWTER SYSTEM
FACILITY ID NUMBER - NEW YORK 0.199214
TABLE 1
SHOWING SEPTIC TANK Co~omoNs FOR
SYSTEMS 001, 002 AND 003
May 12, 2009
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
Inlet Compartment
Outlet Compartment
Inlet Compartment
Outlet Compartment
Inlet Comparlment
Outlet Compartment
Thin Scum Layer
Negligible Scum
Thin Scum Layer
Thin Scum Layer
Thin Scum Layer
No Scum
34" Deep Septage
14" Deep Sephage
32" Deep Septage
19" Septage
31" Deep Septage
12" 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
l" Scum
6" ± 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 Compa~ hnent
Outlet Compartment
4" Scum/Debris
2" Scum/Debris
17" Deep Septage
18" Deep Septage
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TABIJ~ 2
ESTIMATED WASTEWATER FLOWS
(SEWAGE ONLY)
SEPTIC SYSTEM
SEASON
001
Winter
002
Summer
Winter
003
Summer
Winter
ESTIMATED TOTAL FLOWS
(INCLUDING EXTRANEOUS FLOWS)
001
Winter
002
Winter
003
Winter
FLOW (AVERAGE
GALLONS/DAY)
9,488 gpd
3,938 gpd
700 gpd
7 gpd
550 gpd
250 gpd
16,688 gpd
7,688 gpd
700 gpd
7 gpd
550 gpd
250 gpd
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ENCLOSURE # 4
OPERATION AND MAINTENANCE
FIELD REPORT, SEPTEMBER 28, 2009
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FIELD REPORT
September 28, 2009 Sunny / Warm
DATE TIME ON SITE WEATHER
Fishers Island
LOCATION
Fishers Island Operation and Maintenance
SUBJECT
Michael A. Horne, P.E.
REPORT BY
Fishers Island Operation and Maintenance 09-101-200
PROJECT NAME / PROJECT NUMBER
Page 1 of 3
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Attendees:
Michael A. Horne, PE, DTC
Brian Philips, Harold's Construction Company
I. Pump Station:
Wet-well - Little scum. Some cloth material in part of it. Pump high and Iow levels
are set alright.
Pump - pumped without vibration.
Dry well - good condition, except deposits of sewage above valves in the past has
discolored the valves, piping and fitting.
Generator - appearance good. The generator has 434 hours run time.
The grass is mowed in the approach area.
Conclusion: Keep track of propane use. The pump station appears to be in
good condition. See uPump Station Flows".
I1. Community Leach Field:
D Box - East v-notch clogged with cloth material. Unclogged.
West manhole - some debds.
East Manhole - clean invert.
Conclusion: Cloth matedal from apartments clogging system.
Septic Tanks - Slud,qe
West Inlet 12 inches
Center Inlet 24 inches
East Inlet 25 inches
Outlet 12 inches
Outlet 8 inches
Outlet 26 inches
DZVERS:[FZED TECHNOLOGY CONSULTANTS
2321 Whitney Avenue, Suite 301, Hamden, CT 065~8 203 239 4200 203 234 7376 FAX
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FIELD REPORT
Page 2 of 3
Conclusion: Remove sludge from center inlet, east inlet, and east outlet.
4,861 gallon sludge (septage)
Second D box - Clean - flow higher to the west.
Galleries:
60 feet long west #1, some flow, no backup.
60 feet long west f~2, 24 inches deep.
60 feet long west ~3, 2 inches deep.
60 feet long east #1, dry.
60 feet long east #2, dry.
60 feet long east #3, dry.
100 feet long east #1, 5 inches deep, high flow.
100 feet long east #2, 4 inches deep, no flow.
100 feet long east #3, dry.
100 feet long east #4, dry.
100 feet long west #1, pond, 1 inch deep.
100 feet long west #2, 17 % inches deep.
100 feet long west #3, 26 inches deep.
Leach field are mowed. Looks good.
The flow is still unbalanced. It is greater to the west galleries.
III. Cinema System:
Inlet - 3 inches sludge.
Outlet - 1 inch sludge.
Conclusion: Good Condition.
IV. Three Cottages (Silver Eel Cove) System:
Inlet - 6 inches scum on top, 23 inches sludge on bottom.
Outlet- 1§ inches sludge on bottom.
Conclusion: Needs pumping.
V. Collection System:
Manhole near Service Road, across from State Patrol Building is partially clogged at the
inlet by cloth material.
DIVERSZFZED TECHNOLOGY CONSULTANTS
2321 Whitney Avenue, Suite 301, Hamden, CT 06518 203 239 4200 203 234 7376 FAX
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FIELD REPORT
Page 3 of 3
We examined the first manhole downstream of an apartment complex. Six clusters of
cloth material were suspended in the wastewater.
Conclusion: Flushing cloths down the toilets must be prohibited.
Flow at Pump Station:
The computed flow at pump station at 11:00 a.m. was 4.23 gpm.
Conclusion: Based on pump down timing, the flow was Iow at 11:00 a.m. and the
check valves are holding well.
Louisa Evans, Esquire
Harold Cook, Harold's Construction Co.
DIVERSIFIED TECHNOLOGY CONSULTANTS
2321 Whitney Avenue, Suite 301, Harnden, CT 06518 203 239 4200 203 234 7376 FAX
ENGINEERED
SOLUTIONS
LAND
STRUCTURES
WATER
October 8, 2009
Subervisor Scott Russell
Town Hall, 53095 Main Road
P.O. Box 1179
Southold, New York 11971
RE:
Fishers Island Sewer District
Operation and Maintenance Manual
DTC Project No. 09-101-200
Dear Supervisor Russell:
Three copies of the report on the Wastewater System Operation and Maintenance for the Fishers
Island Sewer Distdct are enclosed for you and the staff's use.
We appredate the opportunity to serve the Town of Southold and enjoy working with the residences
of Fishers Island.
A copy of this report is being sent to the Honorable Louisa Evans and Harold Cook of Harold's
Construction Company.
If there are any questions, do not hesitate to call me.
Sincerely,
Michael A. Home, P.E., Associate
Diversified Technology Consultants, Inc.
Enclosure: Report (3 copies)
cc: File
The Honorable Louisa Evans (with enclosure)
Harold Cook, Harold's Construction Company (with enclosure)
2321 WHITNEY AVENUE HAMDEN CENTER II HAMDEN CT 06518
203 239 4200 PH 203 234 7376 FAX