4501_HendersonCountyMSW_LFG_2ndQtrMethaneReport_20170508

Golder Associates NC, Inc. 5B Oak Branch Drive Greensboro, NC. 27407 USA Tel: [phone] Fax: [phone] www.golder.com Engineering Lic. No. C-2862/Geology Lic. No. C-399 Golder, Golder Associates and the GA globe design are trademarks of Golder Associates Corporation
May 8, 2017 083-9650616.204
Ms. Jaclynne Drummond
Compliance Hydrogeologist North Carolina Department of Environmental Quality
Division of Waste Management – Solid Waste Section 2090 US Highway 70
Swannanoa, NC 28778 828-296-4706
RE: METHANE MONITORING RESULTS – SECOND QUARTERLY EVENT OF 2017 CLOSED HENDERSON COUNTY LANDFILL, PERMIT NO. 45-01 HENDERSON COUNTY, NORTH CAROLINA
Dear Jackie:
Attached are the results from the May 2, 2017, second quarterly methane monitoring event conducted at the above-referenced facility. As shown on the attached Boundary Gas Probe Monitoring Log, methane
was not detected above the lower explosive limit (LEL) in any compliance methane monitoring points during the event. Methane was detected below the LEL at compliance methane monitoring well MP-7 at 0.3
percent by volume. Methane was detected above the LEL at assessment methane monitoring well TR-3. Methane was also detected below the LEL in assessment methane monitoring well TR-2. No methane was
detected in the facility structures during this compliance monitoring event. This is the fourth consecutive event with no LEL exceedances in compliance monitoring wells.
This was the second quarterly methane monitoring event since the installation of the landfill gas cut-off trench between MP-4 and the waste unit, which was completed on December 16, 2016, and documented
in the January 13, 2017, Landfill Gas Cut-Off Trench Installation Report. Methane was measured from the two vents from the cut-off trench during the quarterly event to confirm that they are producing methane. A
monitoring log with the gas vent methane results is attached. If you have any questions or concerns, please contact us at 336-852-4903.
Sincerely, GOLDER ASSOCIATES NC, INC.
David “Dusty” Y. Reedy II, PG Rachel P. Kirkman, PG Senior Hydrogeologist Associate and Senior Consultant
Attachment: Boundary Gas Probe Monitoring Log – May 2, 2017 Cut-off Trench LFG Vent Monitoring Log – May 2, 2017
Methane Monitoring Location Map Calibration Record
Cc: Marcus Jones, PE, Director of Engineering, Henderson County, 1 Historic Courthouse Square, Suite 6, Hendersonville, NC 28792. 828-694-6560. [e-mail]
Greg Wiggins, Operations Manager, Henderson County, 191 Transfer Station Drive, Hendersonville, North Carolina 28791. 828-694-7982. [e-mail]
\\greensboro\data\projects\henderson county\lfg\methane monitoring events\2017 may\200 deliverables\252 final issued\0839650616.204-002-r-rev0-45-01 henderson lfg rpt may 2017.docx
Date:05/02/17
Project Name: Project Number:
Site Contact: Technician(s):
End Temperature:
End Barometric Pressure:
Monitoring Location Time Time Pumped
(sec)
% Methane
(CH4)
% Carbon
Dioxide
(CO2)
% Oxygen
(O2)
% Balance
Gas
Initial
% LEL
Stabalized
% LEL
Hydrogen
Sulfide
(H2S, ppm)
Monitoring Point Status
MP-1 12:50 60 0.0 5.0 16.0 79.0 0 0 --MSW Compliance Well
MP-3 13:19 60 0.0 3.3 18.0 78.7 0 0 --MSW Compliance Well
MP-4 13:06 60 0.0 6.4 10.0 83.6 0 0 --MSW Compliance Well
MP-7 13:56 60 0.3 6.7 11.8 81.2 6 6 --MSW Compliance Well
MP-8 13:48 60 0.0 0.0 21.9 78.1 0 0 --MSW Compliance Well
MP-9 13:38 60 0.0 3.7 17.3 79.0 0 0 --MSW Compliance Well
Activity Building 13:00 200 0.0 0.0 21.3 78.7 0 0 --Structure
Animal Shelter 12:26 200 0.0 0.0 21.0 79.0 0 0 --Structure
Break House 12:55 200 0.0 0.0 21.2 78.8 0 0 --Structure
Bus Garage 12:31 200 0.0 0.0 20.8 79.2 0 0 --Structure
Convenience Center 14:39 200 0.0 0.0 21.3 78.7 0 0 0.0 Structure
Maintenance Shop 12:46 200 0.0 0.0 21.3 78.7 0 0 --Structure
Scalehouse 12:41 200 0.0 0.0 21.1 78.9 0 0 --Structure
Trace Barn 13:41 200 0.0 0.0 22.1 77.9 0 0 --Structure
MP-6 13:34 60 0.0 0.0 21.3 78.7 0 0 --MSW Assessment Well
TR-2 13:27 60 0.8 1.0 21.1 77.1 16 16 --MSW Assessment Well
TR-3 13:28 60 11.6 22.5 6.5 59.4 232 232 --MSW Assessment Well
LFG-101 14:24 60 0.0 0.0 20.5 79.5 0 0 0.0 C&D Compliance Well
LFG-102 14:20 60 0.0 0.0 20.9 79.1 0 0 0.0 C&D Compliance Well
LFG-103 14:31 60 0.0 6.9 11.0 82.1 0 0 0.0 C&D Compliance Well
Completed by:
BOUNDARY PROBE MONITORING LOG
Henderson County Landfill 0839650616.204
Greg Wiggins David Reedy
Monitoring Equipment: GEM 2000 & QREA III
Starting Temperature: 68.4° F 70.3° F
Starting Barometric Pressure: 29.90 in Hg 29.89 in Hg
Date:05/02/17
Project Name: Project Number:
Site Contact: Technician(s):
End Temperature:
End Barometric Pressure:
Monitoring Location Time Time Pumped
(sec)
% Methane
(CH4)
% Carbon
Dioxide
(CO2)
% Oxygen
(O2)
% Balance
Gas
Initial
% LEL
Stabalized
% LEL
Hydrogen
Sulfide
(H2S, ppm)
Monitoring Point
Location
Cut-Off Trench Vent 1 13:11 60 6.7 17.2 6.1 70.0 134 134 0.0 Southern Vent
Cut-Off Trench Vent 2 13:15 60 8.0 8.1 13.3 70.6 160 160 0.0 Northern Vent
Completed by:
CUT-OFF TRENCH LFG VENT MONITORING LOG
Henderson County Landfill 0839650616.204
Greg Wiggins David Reedy
Starting Temperature: 68.4° F 70.3° F
Starting Barometric Pressure: 29.90 in Hg 29.89 in Hg
Monitoring Equipment: GEM 2000 & QREA III
PRIVATEPROPERTYMW-10MW-13MW-12MW-11MW-9MW-8MW-7MW-6MW-5BR-1BR-2BR-3AMW-1SAMW-1DAMW-2DAMW-2SMP-3MP-6MP-1SW-1MP-5MW-2MW-1OLD MW-1OLD MW-2HENDERSON COUNTYBUS GARAGEMAINTENANCE FACILITYTRANSFERSTATIONCLOSED C&D LANDFILLLOCATED ON MSW AREACLOSED MSWLANDFILLCLOSED WOODWASTE AND WHITEGOODSCLOSEDDEMOLITIONLANDFILL AREACLOSED C&DLANDFILLACTIVITYBUILDINGPOST 1991 AREAHENDERSON COUNTYANIMAL SHELTERCLOSED TVADISPOSAL AREALFG-101LFG-102LFG-103BREAK HOUSETRACEBARNSCALE HOUSECONVENIENCE CENTERTR-2TR-3EW-40EW-4EW-3EW-26EW-27EW-2EW-1EW-29EW-50EW-37EW-31EW-0EW-30EW-33EW-32EW-22EW-49EW-34EW-21EW-23EW-47EW-48EW-38EW-36EW-25EW-28EW-41EW-42EW-17EW-16EW-5EW-6EW-19EW-43EW-45EW-13EW-44EW-46EW-19AEW-20EW-12EW-11EW-10EW-8EW-9EW-712345678EW-X2EW-X5EW-X6EW-X1MP-7MP-8MP-9MP-4CUT-OFF TRENCH VENT 1CUT-OFF TRENCH VENT 2CONSULTANTDESIGNPREPAREDREVIEWAPPROVEDYYYY-MM-DDTITLEPROJECT No.Rev.PROJECTCLIENTPath: \\greensboro\CAD\_2008\08396506 - Henderson\PRODUCTION\_I - 2016 LFG Remediation Plan\ | File Name: 0839650616I004.dwg
IF THIS MEASUREMENT DOES NOT MATCH WHAT IS SHOWN, THE SHEET SIZE HAS BEEN MODIFIED FROM: ANSI D01 in0839650616PHASE600DRAWING21 2016-09-12MAKDYRDYRRPKHENDERSON COUNTY CLOSED MSW AND C&D LANDFILLPERMIT # 45-01HENDERSON COUNTYMETHANE MONITORING LOCATION MAPEXISTING 10 FT. CONTOUREXISTING 2 FT. CONTOURPROPERTY LINELIMITS OF WASTESTREAMBUFFERTREELINEEXISTING ROADFENCELFG COLLECTION PIPINGLFG CUT-OFF TRENCHCOMPLIANCE MONITORING WELLNON COMPLIANCE MONITORING WELLSCOMPLIANCE METHANE MONITORING WELLSASSESSMENT METHANE MONITORING WELLSSURFACE WATER MONITORING POINTLFG EXTRACTION WELL CONVERTED TO PASSIVE VENTINGMW-8MP-6BR-1MW-11.TOPOGRAPHIC CONTOUR INTERVAL = 2 FEET2.COORDINATE SYSTEM IS N.C. STATE PLANE GRID.3.TOPOGRAPHIC DIVIDING LINE DIVIDES THE BASE MAP TOPOGRAPHIC CONTOURS FROM LANDSATTOPOGRAPHIC CONTOURS. LANDSAT TOPOGRAPHIC CONTOURS HAVE A 5-CONTOUR INTERVAL.4.RECORDS WERE UNABLE TO BE LOCATED FOR LFG EXTRACTION WELLS EW-X1 THROUGH EW-X7 AND WEREGIVEN IDENTIFICATION NAMES UNTIL SUCH TIME THAT RECORDS ARE FOUND.5.LOCATION OF COMPLIANCE METHANE MONITORING WELL MP-4 IS APPROXIMATE.1.BASE MAP PROVIDED BY CAMP DRESSER & McKEE FROM PREVIOUS WATER QUALITY MONITORING REPORTS.2.WELLS MP-7, MP-8, AND MP-9 WERE SURVEYED BY REGIONAL LAND SURVEYING, INC. ON JUNE 11, 2015.EW-290FEET150 300SCALELEGENDNOTESREFERENCEMP-6SITE LOCATION MAP NOT TO SCALEN SITE LOCATION