HomeMy WebLinkAbout2021 3rd Qtr
October 19, 2021
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, Third Quarter 2021
D&B No. 5535
Dear Mr. Bunchuck:
On September 24, 2021 D&B Engineers and Architects(D&B) completed the Third Quarter 2021 landfill
gas monitoring event for the Town of Southold Landfill located on Cox Lane, off Middle Road (CR 48) in
Cutchogue, New York. As partof 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; carbon dioxide levels; hydrogen sulfide
levels; and lower explosive limit (LEL) for methane. Climatic conditions at the Town of Southold Landfill
o
on September 24, 2021 were approximately 65F with rain showers and wind speeds of approximately 10-
15 MPH.
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 measured during the September 24, 2021 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 Fourth Quarter
of 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/cf
Enclosures
Cc:F. DeVita (D&B)
5535\\KR101921JB_Ltr
TABLE 1
TOWN OF SOUTHOLD LANDFILL
LANDFILL GAS MONITORING PROGRAM
THIRD QUARTER 2021 MONITORING EVENT
Sampling Date: September 24, 2021
ParameterUnitGMW-1GMW-2GMW-3GMW-4GMW-5GMW-6RGMW-7GMW-8GMW-9GMW-10GMW-11GMW-12GMW-13GMW-14GMW-15
o
TemperatureC18.118.618.118.218.118.218.118.118.118.118.119.918.418.118.3
Oxygen*%18.318.118.318.718.818.518.318.818.818.913.016.817.718.314.6
Carbon Dioxide%0.10.10.40.10.00.50.40.10.10.16.22.61.10.23.2
Carbon Monoxideppm000000000000000
Lower Explosive Limit - Methane%000000000000000
Hydrogen Sulfideppm000000000000000
NOTES:
Typical atmospheric levels of oxygen range between 19.5% and 23.5%
o
C = Degrees Celsius
% = Percent
ppm = Parts Per Million
*Atmospheric oxygen readings taken during the sampling event were between 18.4% and 18.8%, which is marginally lower than typical atmospheric levels. The oxygen readings within
the monitoring wells are approximately 1-2% lower than expected.
J:\\_HazWaste\\5535 (Southold GW and LFG Monitoring)\\Landfill Gas Monitoring\\2021 3Q\\Southold Landfill - Landfill gas monitoring 2021Q3Page 1 of 1
N
W 9
}
V h u
—/
Y������
w.
n,,..""' r ...��'"n, hvw m'`,,:, .. -, "„" ✓o ..^w„.^ n'u I'," ��' �.., "_ ^Y e"r, ��' r' r, i
„I
� u11
mm
°^p I��n.,��, �' ,,mmw"'`"'�I�a IH4" � �, 4, �w' "' +'^�d��"w"*°�.. ,,.�"��m�,,'~'�Y„�mb�"^�..b ,.,,` ``^��""Xm",*�:`m�� ��' � ✓'so�l��u I
R y ...
114 � I
m.
N b
M
13
O 1
M W-
N �p
a
Mn
LEGEND 250 125 0 250
iiia
GAS MONITORING WELLS SCALE IN FEET
GMW-1 'NOTE:WELL SYMBOLS NOT TO SCALE
�-� SOUTHOLD LANDFILL
oJD�JD�� �+_� CUTCHOGUE, NEW YORK
D&-B ENGINEERS
AND ARCHITECTS LANDFILL GAS MONITORING
�; WELL LOCATION MAP FIGURE No. 1