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ACE6t�EWER'Fl PORTING
EXCEL'ENCE.IN ENGINEERING
Holzmacher,McLendon&Murrell, P.C. ► H2M Associates,Inc.
H2M Labs, Inc.► H2M Architects&Engineers, Inc.
May 15, 2007 575 Broad Hollow Road, Melville, New York 11747
631(..7756.8000, Fax: 631.694.4122
James Bunchuck
D E flZa l'� f2 2m.com
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Southold Solid Waste Coordinator loll �C
Southold Solid Waste District
PO Box 962 MAY 16 2007
Cutchogue,New York 11935-0962
TOWN OF SOUTHOLD
Re: Cutchogue Landfill DEPT.OF SOLID WASTE
Gas Well Monitoring Program
SOHT 07-01
Dear Mr.Bunchuck:
As detailed in our letter proposal dated November 17, 2006, 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 March 19, 2007 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 H2M personnel utilized.aril 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 March 19,2007 gas monitoring program:
Percent
Gas Probe LEL Percent Ox en
GMW-1 0 20.0
GMW-2 0 20.5
GMW-3 0 18.2
GMW-4 0 18.3
GMW-5 4 14.4
GMW-6 90 15.4
GMW-7 0 17.2
GMW-8 0 16.4
GMW-9 0 20.0
GMW-10 0 13.2
GMW-11 94.5 8.6
GMW-12 0 19.6
GMW-13 0 16.4
'GMW=1'4' 0 20.0
GMW-15 0 19.3
ENGINEERS ► ARCHITECTS ► SCIENTISTS ► PLANNERS ► SURVEYORS
O
Y
U2MGROUP
James Bunchuck
May 15, 200,7
Page 2
The results indicate that there is currently a threat of combustible gas migrating beyond the boundary of
the landfill in the vicinity of GMW-6 and GMW-11 located in the southeast and east portions of the
landfill. The next quarterly round of monitoring is expected to be conducted during June 2007.
If any questions arise concerning the gas monitoring program, please contact the undersigned at (63 1)
756-8000 Ext. 1484.
Very truly yours,
HOLZMACHE ,MCLENDON&MURRELL,P.C.
Christopher J.Flynn
Project Manager
cc: Town Board
XASOHT(Town of Southold)\2007\Gas Well Monitoring Program 5-15-07.DOC
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