HomeMy WebLinkAbout2020 4th Qtr D&B ENGINEERS
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ARCHITECTS P.C. 330 Crossways Park Drive,Woodbury,New York 11797
516-364-9890.718-460-3634•Fax:516-364-9045•www.db-eng.com
Board of Directors
Steven A.Fangmann,RE.,BCEE Robert L Raab,RE,BCEE,CCM William D,Merklin,P.E.
President fr Chairman Senior Vice President Senior Vice President
December 3, 2020
James Bunchuck
Solid Waste Coordinator
Town of Southold DSW
6155 Cox Lane
P.O.Box 962
Cutchogue,NY 11935
Re: Town of Southold Landfill
Landfill Gas Monitoring Program, Fourth Quarter 2020
D&B No. 5535
Dear Mr.Bunchuck:
On November 25,2020,D&B Engineers and Architects(D&B)completed the Fourth Quarter 2020 landfill
gas monitoring event for the Town of Southold Landfill located on Cox Lane,off of Middle Road(CR 48)
in Cutchogue, New York. As part of this event, each of the existing fifteen (15) landfill gas monitoring
wells (GMW-1 through 15) were screened utilizing a GEM 5000 Plus Landfill Gas Analyzer for the
following parameters: temperature; oxygen levels; carbon monoxide levels; hydrogen sulfide levels; and
lower explosive limit(LEL)for methane. Weather conditions on November 25, 2020 were observed to be
overcast and approximately 45 degrees Fahrenheit.
Enclosed with this letter is Figure 1, which shows the approximate locations of each existing landfill gas
monitoring well. Also enclosed with this letter is Table 1,which lists all landfill gas monitoring wells and
their corresponding measurements as observed during the November 25, 2020 monitoring event. As
indicated in Table 1,methane, carbon monoxide, and hydrogen sulfide were not detected within any of the
landfill gas monitoring wells.
The next quarterly round of landfill gas monitoring is expected to be conducted during the First Quarter of
2021 (February 2021). If you have any questions,please contact me at(516)364-9890,Ext. 3058.
Very truly yours,
Keith Robins, P.G.
Associate
KR/MFt/cfkb
Enclosure
cc: F.DeVita(D&B)
♦5535\KR113020JB_Ltr(RO1)
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AND. LANDFILL GAS
ARCHITECrS, PC. "FIGURE No. ILOC TibN MAP
TABLE 1
TOWN OF SOUTHOLD LANDFILL
LANDFILL GAS MONITORING PROGRAM
FOURTH QUARTER 2020 MONITORING EVENT
Sampling Date: November 25,2020
Parameter Unit GMW-1 GMW-2 GMW-3 GMW-4 GMW-5 GMW-6R GMW-7 GMW-8 GMW-9 GMW-10 GMW-11 GMW-12 GMW-13 GMW-14 GMW-15
Temperature eC 11.2 _ 8.8 8.5 9.1 14.0 13.2 8.7 14.5 -13.8 17.3 14.3 12.8 11.4 10.9 10.8
Oxygen % 19.2 18.7 18.9 18.9 11.2 14.7 17.4 13.8 15.0 20.6 10.3 13.1 14.2 17.8 20.1
Carbon Monoxide m 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Lower Explosive Limit-Methane % 0 0 0 0 0 0 0 0 0 0' 0 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%
OC =Degrees Celsius
%=Percent
ppm=Parts PerrMillion
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