HomeMy WebLinkAbout2010 3rd Qtrarchitects + engineers
175 Pinelawn Road, Ste 308 !e 531.756.8000
Melvitte, NY 11747 631.393.6322
RECEIVED
NOV 3 2010
November 01, 2010
James Bunchuck, Solid Waste Coordinator
Southold Solid Waste District
P.O. Box 962
Cutchogue, New York 11935-0962
Southold Town Clerk
Re:
Town of Southold Landfill
Gas Monitoring Well Monitoring Program, Third Quarter 2010
H2M Project No. SONTIO-01
Dear Mr. Bunchuck:
As detailed in our letter proposal dated September 27, 201.0, our office conducted landfill
gas monitoring for the existing fifteen gas monitoring wells (located in the southwest, south,
and southeast perimeter of the landfill) at the Town of Southold Landfill located on Middle
Road (CR 48) in Cutchogue, New York. The monitoring program was conducted on
September 30, 201.0, and the wells were monitored with a GEM 2000 Plus Landfill Gas
Surveyor. Weather conditions on September 30, 201.0, were observed to be sunny and
approximately 75 degrees Fahrenheit with moderate winds onsite.
Enclosed with this letter are Figure I and Table 1. Figure 1. shows the approximate locations
of these gas monitoring wells, and Table I lists these gas monitoring wells and their
corresponding levels of carbon monoxide, oxygen, hydrogen sulfide and lower explosive limit
(LEL) for methane as measured on September 30, 201.0. The levels listed in Table 1. indicate
that there is currently a potential for combustible gas migration beyond the boundary of the
landfill in the vicinity of GMW-5, GMW-6 and GMW-11 (located in the eastern and northern
portions of the landfill, respectively). These monitoring results continue a trend of previously
elevated methane levels in GMW-5, GMW-6 and GMW-11. The next quarterly round of
monitoring is expected to be conducted during the fourth quarter of 2010.
If any questions should arise, please contact the undersigned at (631) 756-8000.
Very truly yours,
HOLZMACHER, McLENDON & MURRELL, P.C.
Garrett Nintze~
Project Manager
EnclosuE~s; (2)
M:\¢(zdd\SDHT\OSOi\MDNITDRING ~/ELL LOCATION MAP.dwg Lo$'~ ModiFied, Aug 17, 2006 - ~,.35pr~ PLotted on: Jrzn 11, 800B - 4:23pm ]~¥ jnb
IIONITORIN® 'I4ELL
LC:~,^TION It,AP
FIGURE 1
TOWN OF SOUTHOLD LANDFILL
LANDFILL MONITORING PROGRAM
GAS MONITORING WELLS RESULTS --Third Quarter 2010
Date Parameter Unit GMW~1~GMW~2]GMW-3~GMW-~GMW~GMW~6~GMW~7~GMW~8]GMW~9~GMW~1~GMW"11~GMW-12]GMW~13~GMW-14~ GMW-1~,
Oxygen % 19.81 I I I I I I I I I I I 119'8 16,0 18.5 0,9 0.8 18.0 11.0 12.6 20.9 0.8 17.5 5.4 1821 16.5
Carbon Monoxide I ppm I 0'01 0'01 3'°1 °'°1 °.°1 °.°1 °.°1 lO.Ol o.ol o.ol o.ol o.ol 6 el o.ol o.o
o9/3o/2oloLower Explosive Limit - Methane % 0.0 0'0i 0'01 0'01 50.01 24.61 8.01 0.01 0.01 0.01 99.01 0.01 8.01 001 00
Hyd o~en Su fide ppm o.0 0.0 0.0 0.o 0.0 4.o 0.0 o.0 0.0 0.0 1.o 0.0 o.o o.oI o.o
NOTES:
Typical a~mospheric levels of oxygen range between 1g.5% and 25,$%
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