4002_GreeneCoMSWLF_GWMR_20170929

Greene County Active C&D over Closed Unlined Landfill
Walstonburg, North Carolina
September 2017
Event 3 of 4
MESCO Project Number: G17010.0
Landfill Gas Migration Monitoring Report
Prepared for
Municipal Engineering Services Company, P.A.Garner and Boone, North Carolina
Permit Number: 40-02
P.O. Box 97
Garner, NC 27529
License No. C-0281

September 29, 2017
Mr. David Jones
Public Works Director
Greene County
105 Landfill Road
Walstonburg, NC 27888
Telephone: [phone]
Fax: [phone]
Re: Landfill Gas Migration Monitoring Report
Greene County active C&D over Closed MSW Landfill
Permit Number: 40-02
Event Dates: September 20 & 29, 2017 (Event 3 of 4)
Dear Mr. Jones:
The Greene County active C&D over closed MSW Landfill (40-02) was monitored for landfill gas (LFG) migration
through soil by Municipal Engineering Services Company, P.A. (MESCO) personnel on September 20 & 29, 2017.
MP-6 contained levels of methane above Standards allowed at the property line. In response to the exceedance the
contingency plan was enacted which entailed installation and testing of a new monitoring probe (MP-6A) proximal
to MP-6 and closer to the property line. These monitoring events were performed in accordance with the NCDENR
Solid Waste Section Landfill Gas Monitoring Guidance Document dated November 2010 as part of the quarterly
emissions monitoring program. LFG readings (methane, hydrogen sulfide, carbon dioxide and oxygen) were taken
from 12 existing methane probes (MP-1 through MP-3, MP-5 through MP-10, MP-4A, MP-6A, MP-11A) and three
on-site restricted access structures (Scalehouse, Shop and Shelter).
Stabilized levels of methane was detected in MP-6 above the LEL. However, since methane was not detected at
MP-6A, located closer to the southern property line, the detection at MP-6 should not be considered a compliance
violation.
The Environmental Monitoring Report Form, monitoring results summary table, a figure depicting the monitored
locations, a boring log of new probe MP-6A and instrument calibration certificate should be kept accessible at the
facility. The Landfill Gas Monitoring Plan is planned to be updated to include MP-6A under separate cover.
Monitoring should continue on a quarterly basis with the next event scheduled before January 1, 2018. If you have
any questions regarding this report, please contact us by phone at [phone] or by email at [e-mail].
Sincerely,
MUNICIPAL ENGINEERING SERVICES CO., P.A.
Jonathan Pfohl
Environmental Specialist
cc: Ms. Jaclynne Drummond, NCSWS
Enclosures

NC Division of Waste Management – Solid Waste Section
Landfill Gas Monitoring Data Form
Facility Name:Greene Co. Active C&D over Closed MSW Landfill Permit Number:40-02
Date of Sampling:09/20/17 NC Landfill Rule (.0500 or .1600):0.1600
Name & Position of Sample Collector:
Type & Serial Number of Gas Meter:GEM 2000 PLUS (GM12481/10)Calibration Date of Gas Meter:09/18/17
Date & Time of Field Calibration:
Type of Field Calibration Gas (15/15 or 35/50):35/50 Expiration Date of Field Calibration Gas Canister:05/19/19
Pump Rate of Gas Meter:500 cc/min (nominal)
Ambient Air Temperature: 85 F Barometric Pressure:30.03" Hg General Weather Conditions:Clear
Location or
LFG Well ID
Sample
Tube
Purge in
Seconds
Time
Reading
Taken
Time
Pumped
in
Seconds
CH4
Initial
(% LEL)
Stabilized
CH4
(%LEL)
CH4
(%/vol.)
O2
(%/vol.)
CO2
(%/vol.)
H2S
(ppm)
MP-1 30 01:42 PM 60 NR 0 0.0 18.7 1.9 0
MP-2 30 01:36 PM 60 NR 0 0.0 19.9 0.8 0
MP-3 30 01:30 PM 60 NR 0 0.0 19.1 0.9 0
MP-4A 30 01:25 PM 60 NR 0 0.0 20.6 0.5 0
MP-5 30 01:14 PM 60 NR 0 0.0 19.7 2.4 0
MP-6 30 01:31 PM 60 NR 1198 59.9 2.1 37.7 0
MP-7 30 01:39 PM 60 NR 0 0.0 19.3 1.2 0
MP-8 30 01:43 PM 60 NR 0 0.0 19.4 1.3 0
MP-9 30 12:57 PM 60 NR 0 0.0 20.7 0.2 0
MP-10 30 01:01 PM 60 NR 0 0.0 19.8 1.2 0
MP-11A 30 01:15 PM 60 NR 0 0.0 19.2 1.6 0
Shelter 30 12:56 PM 60 NR 0 0.0 21.2 0.0 0
Shop 30 12:58 PM 60 NR 0 0.0 21.2 0.0 0
Scalehouse 30 01:52 PM 60 NR 0 0.0 21.2 0.0 0
Standard at property line 100% LEL, 5% By Volume, 50,000 PPM of Methane
Standard in Buildings 25% LEL, 1.25% By Volume, 12,500 PPM of Methane
NR = No Reading Attempted
Certification
To the best of my knowledge, the information reported and statements made on this data submittal and
attachments are true and correct. I am aware that there are significant penalties for making any
false statement, representation, or certification including the possibility of a fine and imprisonment.
Environmental Technician
SIGNATURE TITLE
Box not shut, wasp nest in lid
Odor
Notice:This form and any information attached to it are “Public Records” as defined in NC General Statute 132-1. As such, these documents are
available for inspection and examination by any person upon request (NC General Statute 132-6).
Emily Griego (Env.Technician)
09/18/2017 9:12:42AM
Instructions: Under “Location or LFG Well” identify the monitoring wells or describe the location for other tests (e.g., inside buildings). A drawing
showing the location of test must be attached. Report methane readings in both %LEL and % methane by volume. A reading in percent methane
by volume can be converted to %LEL as follows: % methane by volume = %LEL/20
Notes
NC Division of Waste Management – Solid Waste Section
Landfill Gas Monitoring Data Form
Facility Name:Greene Co. Active C&D over Closed MSW Landfill Permit Number:40-02
Date of Sampling:09/29/17 NC Landfill Rule (.0500 or .1600):0.1600
Name & Position of Sample Collector:
Type & Serial Number of Gas Meter:TVA 1000B FID (071652266 via Geotech)Calibration Date of Gas Meter:09/28/17
Date & Time of Field Calibration:
Type of Field Calibration Gas (15/15 or 35/50):500 PPM Methane Expiration Date of Field Calibration Gas Canister:12/01/18
Pump Rate of Gas Meter:250 cc/min (nominal)
Ambient Air Temperature: 79 F Barometric Pressure:30.01" Hg General Weather Conditions:Clear
Location or
LFG Well ID
Sample
Tube
Purge in
Seconds
Time
Reading
Taken
Time
Pumped
in
Seconds
CH4
Initial
(% LEL)
Stabilized
CH4
(%LEL)
CH4
(%/vol.)
O2
(%/vol.)
CO2
(%/vol.)
H2S
(ppm)
MP-1 NR NR NR NR NR NR NR NR NR
MP-2 NR NR NR NR NR NR NR NR NR
MP-3 NR NR NR NR NR NR NR NR NR
MP-4A NR NR NR NR NR NR NR NR NR
MP-5 NR NR NR NR NR NR NR NR NR
MP-6 30 04:21 PM 60 762 724 36.2 NR NR 0
MP-6A 30 04:12 PM 60 0 0 0.0 NR NR 0
MP-7 NR NR NR NR NR NR NR NR NR
MP-8 NR NR NR NR NR NR NR NR NR
MP-9 NR NR NR NR NR NR NR NR NR
MP-10 NR NR NR NR NR NR NR NR NR
MP-11A NR NR NR NR NR NR NR NR NR
Shelter NR NR NR NR NR NR NR NR NR
Shop NR NR NR NR NR NR NR NR NR
Scalehouse NR NR NR NR NR NR NR NR NR
Standard at property line 100% LEL, 5% By Volume, 50,000 PPM of Methane
Standard in Buildings 25% LEL, 1.25% By Volume, 12,500 PPM of Methane
NR = No Reading Attempted
Verification Re-test of MP-6 and compliance test nearer boundary at new probe MP-6A.
Performed in response to detection of methane above allowable limit at MP-6 during event performed on 9/20/17.
Methane was very low (0.3 ppm )at MP-6A which is below measured ambient air downwind of landfill (0.4 ppm) therefore considered ND (0%/vol).
Certification
To the best of my knowledge, the information reported and statements made on this data submittal and
attachments are true and correct. I am aware that there are significant penalties for making any
false statement, representation, or certification including the possibility of a fine and imprisonment.
Environmental Specialist
SIGNATURE TITLE
9/28/17 04:15 PM
Instructions: Under “Location or LFG Well” identify the monitoring wells or describe the location for other tests (e.g., inside buildings). A drawing
showing the location of test must be attached. Report methane readings in both %LEL and % methane by volume. A reading in percent methane
by volume can be converted to %LEL as follows: % methane by volume = %LEL/20
Notes
Odor
Notice:This form and any information attached to it are “Public Records” as defined in NC General Statute 132-1. As such, these documents are
available for inspection and examination by any person upon request (NC General Statute 132-6).
J. Pfohl (Env. Specialist)
New Probe
LOG OF BORING: MP-6A
Greene Co CDLF and Closed MSWLF Project No. G17010.0
Drilling contractor: NCWC 3301-A Date started: 9/27/2017 Surface elevation: ~114 (not surveyed)
Drill rig & method: Auger Date ended: 9/27/2017 Top of pipe elevation: NOT SURVEYED
Logged by: J. Pfohl Completion depth: 6.75 ft Depth to water (TOB): dry
Stickup height: N/A Depth to water (24hrs): dry
Depth (ft)SPT (bpf)Soil TypeSymbolSampleDescription of Material & Remarks
Well Diagram
5
LFG monitoring well ~ 115 ft ESE of Waste Limit. Used to delineate/
demonstrate extent of methane migration beyond MP-6.
SILTY SAND; Tan, very dense.
Boring terminated at 6.8 feet Bentonite#3 Sand Pack1" PVC (0.01" slot)Municipal Engineering Services Company, P.A.
Operation/Construction Managers Civil/Sanitary Engineers Environmental Studies
PO Box 97, Garner, North Carolina 27529 [phone] PO Box 349, Boone, North Carolina 28607 [phone] Page 1 of 1
ACTIVE C&D OVER CLOSED UNLINED
LANDFILL FACILITY
GREENE COUNTY
NORTH CAROLINA