HomeMy WebLinkAbout2008 3rd Qtr 1�2M
Engineers I Architects I Scientists I Planners I Surveyors 175 Pinelawn Road I Suite 308
Melville, New York 11747
v 631.756.8000 f 631.454.8432
Holzmacher, McLendon&Murrell, P.C. I 1-12M Associates, Inc. www.h2m.com
1-12M Labs, Inc. I 1-12M Architects& Engineers, Inc. p
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September 16,2008
SEP � 9 200
James Bunchuck, Solid Waste Coordinator
Southold Solid Waste District
P.O.Box 962 TOWN OF SOUTHOLO
DEPT.OF SOLID WASTE
Cutchogue,New York 11935-0962
Re: Town of Southold Landfill,Gas Monitoring Well Monitoring Program
H2M Project No. SOHT0801
Dear Mr.Bunchuck:
As detailed in our letter proposal dated November 17,2006, our office conducted landfill gas monitoring
for the existing fifteen gas monitoring wells (i.e., 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. Said monitoring program was conducted on August 12,2008,and said wells were monitored with
a RAE Systems VRAE 7800 Gas Surveyor. Weather conditions that day were observed to be sunny and
approximately 70 degrees Fahrenheit with little to no onsite wind.
Enclosed with this letter are Figure 1 and Table 1. Figure 1 shows the approximate locations of these gas
monitoring wells, and Table 1 lists these gas monitoring wells and their corresponding levels of carbon
monoxide, oxygen and lower explosive limit (LEL) for methane as measured on August 12, 2008. 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 and GMW-6 (i.e., located in the eastern portion of
the landfill) and combustible gas levels at said locations increased by 55% and 82%, respectively, since
last measured in May 28, 2008. The next quarterly round of monitoring is expected to be conducted in
November of 2008. '
If any questions arise concerning the gas well monitoring program, please contact the undersigned at
(631) 756-8000.
Very truly yours,
HOLZMACHER,McLENDON& NHJRRELL,P.C.
Vito Giurlanda
Staff Scientist
Enclosures: (2)
cc: Town Board
Page 1 of 1
XASOHT(Town of Southold)-10900\2008\SOHT0801 (Southhold Landfill)\0I-REPOR"IAReport\SOHT_08-0916_report-q3-gmw.doc
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TABLE 1
TOWN OF SOUTHOLD LANDFILL y.
LANDFILL MONITORING PROGRAM
GAS MONITORING WELLS RESULTS
August 12,2008
Parameter Unit GMW-1 GMW-2 GMW-3 GMW-4 GMW-5 GMW-6 GMW-7 GMW-8 GMW-9 GMW-10 GMW-11 GMW-12 GMW-13 GMW-14 GMW-15
Oxygen % 20.0 18.9 20.1 20.4 8.4 6.5 19.6 20.0 2.1 19.2 18.4 20.0 19.6 20.5 19.8
Carbon Monoxide m 0 0 0 0 11 0 0 0 0 0 0 0 0 0 0
Lower Explosive Limit % 0 0 0 0 56 100+ 0 0 0 0 2 0 0 0 0
Hydrogen Sulfide m 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
NOTES:
Typical atmospheric levels of oxygen range between 19.5%and 23.5%
S01-IT 08-0000_field-notes-gmw.xls Holzmacher, McLendon and Murrell,P.C. Page 1 of 1