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IXCEL LIENCE-N ENGINEERING
Holzmacher, McLendon&Murrell, P.C. ► H2M Associates, Inc.
January 4,2006 H2M Labs, Inc. ► H2M Construction Management, Inc.
575 Broad Hollow Road, Melville,-New York 11747
(631)756-8000, Fax: (631)694-4122
James Bunchuck www.h2m.com
SouthoUSolidWaste Coordinator
PO Box.962
Cutchogue,New York 11935-0962
Re: Cutchogue Landfill
Gas Well Monitoring Program
SOHT 05-01
Dear Mr. Bunchuck:
As detailed in our letter'proposal dated December 2, 2005, our office conducted a round of monitoring for
the methane gas well monitoring program for the Town of Southold Sanitary Landfill located on Middle
Road (CR 48) in Cutchogue. The monitoring program was conducted on December 9, 2005 for the
fifteen (15) gas monitoring wells at the southwest, south and southeast perimeter of the landfill. Figure 1
is provided which indicates the location of the gas monitoring wells at the landfill. The field program
included the measurement of oxygen and combustible gases for each of the wells as required by
NYSDEC. The field work was conducted during a period of relatively low barometric pressure (29.87
inches).to provide an evaluation of gas migration under a potential"worst-case" scenario.
The H2M personnel utilized an MSA Orion Multi-gas Detector to monitor for oxygen and combustible
gas (percent of lower explosive limit [LEL]) from the sampling ports of the gas monitoring wells. The
following table summarizes the findings of the December 9, 2005 gas monitoring program:
Percent
Gas Probe LEL Percent Oxygen
GMW-1 0 20.1
GMW-2 0 19.2
GMW-3 0 14.3
GMW-4 0 19.6
GMW-5 0 6.5
Giv`W-6 0 0.0
GMW-7 0 14.9
GMW-8 0 20.4
GMW-9 0 0.0 j
GMW-10 0 14.3 j
GMW-11 0 0.0
GMW-12 0 10.9
GMW-13 0 3.2
GMW-14 0 10.4
GMW-15 0 0.0
ENGINEERS ► ARCHITECTS ► SCIENTISTS
PLANNERS ► CONSTRUCTION MANAGERS ► SURVEYORS
Y
James Bunchuck
January 4, 2006
Page 2
The results indicate that there is currently no threat of combustible gas migrating beyond the boundary of
the landfill. If any questions arise concerning the gas monitoring program, please contact our office at
(631)756-8000 Ext. 1610.
Very truly yours,
HOLZMACHE�R,,MCLENDON&MURRELL,P.C.
George W.Desmarais,P.E.
GWD:gjc
cc: Town Board
XASOHT(Town of Southold)\2006\Gas Well Monitoring Program.DOC