HomeMy WebLinkAbout2010 1st Qtr 0-12M
Engineers I Architects I Scientists I Planners I Surveyors 175 Pinelawn Road I Suite 308
Melville, New York 11747
v 631.756.8000 f 631.393.6322
Holzmacher, McLendon& Murrell, P.C. I 1-12M Associates, Inc. www,h2m.com
1-12M Labs, Inc. I 1-12M Architects&Engineers, Inc. .
March 31, 2010 E �( E
James Bunchuck, Solid Waste Coordinator D
Southold Solid Waste District
P.O. Box 962 APR — 2 2010
Cutchogue, New.York 11935-0962
HOLD
Re: Town of Southold Landfill tOWIV OF SOUTa
DEPT.OF SOLID WASTE
Gas Monitoring Well Monitoring Program, 1St Quarter 201
1-12M Project No. SOHT1001
Dear Mr. Bunchuck:
As detailed in our letter proposal dated March 10, 2009, 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 March 24,
2010, and the wells were monitored with a GEM 2000 Plus Landfill Gas Surveyor. Weather
conditions on March 24, 2010, were observed to be sunny and approximately 50 degrees
Farenheit with windy conditions onsite.
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, hydrogen sulfide and lower explosive limit
(LEL) for methane as measured on March 24, 2010. 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-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-6 and GMW-11. The next quarterly round of monitoring is expected
to be conducted during June of 2010.
If any questions should arise, please contact the undersigned at (631) 756-8000.
Very truly yours,
HOLZMACHER, McLENDON & MURRELL, P.C.
Garrett Nintzel
Project Manager
Enclosures: (2)
cc: Town Board
CELEBRATING 75 YEARS A C
MEMBER
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SURVEYORS
MELVILLE. N.Y. • • ,
TOWN OF SOUTHOLD LANDFILL
LANDFILL MONITORING PROGRAM i
GAS MONITORING WELLS RESULTS--First Quarter 2010
Date 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-1 GMW-13 GMW-1 GMW-15
Oxygen % 21.6 21.5 21.5 20.4 21.6 17.1 13.1 21.2 21.3 21.9 15.2 18.9 20.1 19.3 18.9
03/24/2010 Carbon Monoxide PPM 0 0 0 0 0 0 0 0 0 4 0 0 0 0 0
Lower Explosive Limit % 5 6 7 5 5 100+ 4 4 4 3 74 5 5 4 0
Hydrogen Sulfide PPM 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%
2010-S0HT_report-gwm_gtr01.xls Holzmacher, McLendon and Murrell, P.C. Page 1 of 1