0601_AveryCounty_LFG_DIN28320_20161202

January 27, 2017

Ms. Jaclynne Drummond
NCDENR DWM Solid Waste Section
2090 U.S. 70 Highway
Swannanoa, North Carolina 28778-8211

RE: Operations, Monitoring, and Maintenance Report –Dec 2016
Avery County Closed MSW Landfill
Spruce Pine, North Carolina

Dear Ms. Drummond:

Smith Gardner, Inc. (S+G) is pleased to present this report concerning the operation and
maintenance (O&M) of the Avery County Closed MSW Landfill (Permit No. 06-01) Landfill Gas
Collection and Control System (LFGCCS). Monitoring of the on- and off-site landfill gas
probes was also performed. Mr. Don Misenheimer with S+G performed the site visit on
December 2, 2016. Site visit details are provided below.

LFG EXTRACTION WELL MONITORING PROGRAM

Monthly monitoring of the LFGCCS will continue and shall include the following items:

 CH4, O2, CO2, and pressure monitoring at each extraction well head;
 CH4, O2, CO2, and pressure monitoring at the flare station; and
 Adjustment of the LFGCCS to balance recovery and ensure safe system operation.

The County will maintain this LFGCCS and will continue to evaluate the effectiveness of
increased LFG recovery from the waste mass in alleviating off-site LFG migration. Results
from monthly monitoring events will be reported in accordance with the approved LFG
Monitoring Plan.

LFG EXTRACTION WELL MONITORING ACTIVITIES

Mr. Misenheimer performed the flare station and well field monitoring on December 2, 2016.
Initial measurements indicated there was approximately 29 inches of available vacuum
average throughout the well field, ranging from approximately 27 to 29 inches of available
vacuum at each of the LFG wells across the well field. The results from this event are
summarized below. Recommended actions are underlined. Well field data and flare station
data are provided in the attached Table 1.

Ms. Drummond
January 27, 2017
Page 2 of 3
LFG Extraction Well Field

 W-1 through W-10: S+G performed methane (CH4), oxygen (O2), carbon dioxide
(CO2), and pressure monitoring. No wellhead valves were adjusted during this
sampling event.

 Orifice Plates: S+G continues to evaluate orifice plate sizes at wells W5, W7, W9,
and W10 during each site visit. As LFG flow potential at these locations remains
stable, the correct orifice plate sizes are currently installed.

Flare Station

 Condensate Tank: The condensate tank was observed during this site visit; the
liquid was at an acceptable level. S+G will continue to monitor the liquid level of
the condensate tank.

 Filter Tank: The filter tank was observed during the site visit and the liquid level
was found to be at an acceptable level. S+G will continue to monitor the liquid
level of the filter tank.

 Flare operation: Due to low concentrations of methane measured at the flare
combustion was not observed. The spark generator was operational; however,
the flare was not able to be ignited prior to S+G leaving the site. S+G will continue
to adjust the system to optimize gas flow and quality.

LFG MONITORING WELL (PERIMETER) MONITORING PROGRAM
Mr. Misenheimer performed monitoring of the perimeter LFG monitoring network during this
event. Monitoring Wells P-1, P-2, P3 and P-7 exhibited CH4 concentration readings of 1.8%,
2.0%, 4.8% and 0.1% respectively but did not exceed the LEL of 5%. The other wells,
monitored during this event, had no detectable concentrations of CH4. Results of this
monitoring event are included in Attachment 1. Attachment 2 provides a CH4 concentration
graph over time for monitoring wells that have historically had methane present. The
current well network will continue to be monitored and data will be reported to NCDEQ and
the County.

CONCLUSIONS

The site has been generally characterized by a trend of consistently decreasing LFG
concentrations. Elevated methane concentrations have been observed in a few wells during
the past few monitoring events. While CH4 concentrations during the December 2016 event
were all below the LEL, recent detections may be attributable to the extremely dry conditions
at the site during the last half of 2016. We will continue to monitor the CH4 concentrations at
the site monthly.

Ms. Dr
Januar
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Attachment 1

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NC Division of Waste Management - Solid Waste Section
Landfill Gas Monitoring Data Form
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).
Facility Name: ______________________________________________ Permit Number: ____________________________
Date of Sampling: ___________________ NC Landfill Rule (.0500 or .1600): _____________________________________
Name and Position of Sample Collector: _________________________________________
Type and Serial Number of Gas Meter: _______________________________ Calibration Date of Gas Meter: ___________
Date and Time of Field Calibration: _____________________
Type of Field Calibration Gas (15/15 or 35/50): ____________ Expiration Date of Field Calibration Gas Canister: ________
Pump Rate of Gas Meter: _____________
Ambient Air Temperature: __________ Barometric Pressure: ______________ General Weather Conditions: _____________
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
If your facility has more gas monitoring locations than there is room on this form, please attach additional sheets listing the same
information as contained on this form.
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.
__________________________________ ________________________
SIGNATURE TITLE
.0500
Certification To the best of mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmy kyyynowledge, the in
here are significant penallllalllallallllllalllllllllllllllllllllllllllllllalalaalaalllaaltiettietititiiettiettietietitittietieteetititieeeiiieiiiiiiiiiiiiiis for making any fal
_______________________________________________________________
SISSIIIISSIISSIISSSSIISSSISSSISSSSSSSSSSGNATURUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUE
Avery County Closed Landfill 06-01
12/2/16 .0500
Don Misenheimer S+G
GEM 2000, 07096 11/30/2016
12/2/16 10:30AM
15/50 7/2017
0.5 L/min
42 28.20 sunny
P-1 > 60 s 1430 > 60 s 36 36. 1.8 17.4 1.0
P-2 > 60 s 1428 > 60 s 40 40. 2.0 0.4 15.7
P-3 > 60 s 1425 > 60 s 96 96 4.8 14.5 14.6
P-4 > 60 s 1420 > 60 s 0 0 0 16.6 8.5
P-5 > 60 s 1411 > 60 s 0 0 0 19.1 1.1
P-6 > 60 s 1404 > 60 s 0 0 0 20.0 1.5
P-7 > 60 s 1358 > 60 s 2 2 0.1 18.5 1.7
P-8 > 60 s 1352 > 60 s 0 0 0 18.2 3.9
P-9 > 60 s 1436 > 60 s 0 0 0 19.6 0.4
P-10 > 60 s 1438 > 60 s 0 0 0 20.2 0.2
P-11 > 60 s 1442 > 60 s 0 0 0 16.8 3.3
P-12 > 60 s 1356 > 60 s 0 0 0 20.1 0.4
P-13 > 60 s 1459 > 60 s 0 0 0 20.3 0.0
Britton Digitally signed by Britton DN: cn=Britton, o=Ransom, ou, email=[e-mail], c=US Date: 2016.02.03 09:29:15 -05'00'Project Scientist, S+G
NC Division of Waste Management - Solid Waste Section
Landfill Gas Monitoring Data Form
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).
Facility Name: ______________________________________________ Permit Number: ____________________________
Date of Sampling: ___________________ NC Landfill Rule (.0500 or .1600): _____________________________________
Name and Position of Sample Collector: _________________________________________
Type and Serial Number of Gas Meter: _______________________________ Calibration Date of Gas Meter: ___________
Date and Time of Field Calibration: _____________________
Type of Field Calibration Gas (15/15 or 35/50): ____________ Expiration Date of Field Calibration Gas Canister: ________
Pump Rate of Gas Meter: _____________
Ambient Air Temperature: __________ Barometric Pressure: ______________ General Weather Conditions: _____________
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
If your facility has more gas monitoring locations than there is room on this form, please attach additional sheets listing the same
information as contained on this form.
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.
__________________________________ ________________________
SIGNATURE TITLE
.0500
mation as contained on thihiihiiiihiiiihhhhiiiihhhhhiiiihhhhhihiiihhhhiihhhhhihhhhhiihhhhhhihhhhhihhhhhhhhhhhhhhhs form.
ation To the best of my knownnownnnwnonnnnnonoownonnnonnnononnnnnoonnnnnnoonnnnnnoonnnoonoonnnnonnnooonnononooonoooledge, the informat
e significcccccccccccccccccccccccccantaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa penaltieieeieeeieieieeieeieeeeeeeeeeeeeeeieeeeeieeieeeeeieeeeeieieeeeeetieeieeeeeiieeeeeeeeiiieeeeiiieeiieeeeieiiiieeisfsfs fsfsfsfsffffsffffffffffffffffffffffffffffffffffffffor oroorororrrr oroororrrrrrooroorrroorororrrrorrrrooororrrrrrrr making any false state
____________________________________________
NATURE
Avery County Closed Landfill 06-01
12/2/16 .0500
Don Misenheimer S+G
GEM 2000, 07096 11/30/2016
12/2/16 10:30AM
15/15 7/2017
0.5 L/min
42 28.20 Sunny
Avery County Airport Structure #1
NE Corner >60s 1503 >60s 0 0 0 20.9 0
NW Corner >60s 1505 >60s 0 0 0 20.9 0
SE Corner >60s 1507 >60s 0 0 0 20.9 0
SW Corner >60s 1509 >60s 0 0 0 20.9 0
Avery County Airport Structure #2
NE Corner >60s 1511 >60s 0 0 0 20.9 0
NW Corner >60s 1513 >60s 0 0 0 20.9 0
SE Corner >60s 1515 >60s 0 0 0 20.9 0
SW Corner >60s 1517 >60s 0 0 0 20.9 0
Avery County Airport Structure #3
NE Corner >60s 1519 >60s 0 0 0 20.9 0
NW Corner >60s 1521 >60s 0 0 0 20.9 0
SE Corner >60s 1523 >60s 0 0 0 20.9 0
SW Corner >60s 1525 >60s 0 0 0 20.9 0
Avery County Airport Structure #4
NE Corner >60s 1527 >60s 0 0 0 20.9 0
NW Corner >60s 1529 >60s 0 0 0 20.9 0
SE Corner >60s 1531 >60s 0 0 0 20.9 0
SW Corner >60s 1533 >60s 0 0 0 20.9 0
Avery County Airport Structure #5
NE Corner >60s 1535 >60s 0 0 0 20.9 0
NW Corner >60s 1537 >60s 0 0 0 20.9 0
SE Corner >60s 1539 >60s 0 0 0 21.0 0
SW Corner >60s 1541 >60s 0 0 0 20.9 0
Project Scientist, S+G
NC Division of Waste Management - Solid Waste Section
Landfill Gas Monitoring Data Form
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).
Facility Name: ______________________________________________ Permit Number: ____________________________
Date of Sampling: ___________________ NC Landfill Rule (.0500 or .1600): _____________________________________
Name and Position of Sample Collector: _________________________________________
Type and Serial Number of Gas Meter: _______________________________ Calibration Date of Gas Meter: ___________
Date and Time of Field Calibration: _____________________
Type of Field Calibration Gas (15/15 or 35/50): ____________ Expiration Date of Field Calibration Gas Canister: ________
Pump Rate of Gas Meter: _____________
Ambient Air Temperature: __________ Barometric Pressure: ______________ General Weather Conditions: _____________
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
If your facility has more gas monitoring locations than there is room on this form, please attach additional sheets listing the same
information as contained on this form.
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.
__________________________________ ________________________
SIGNATURE TITLE
.0500
rtification To the best of mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmy kyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyynowledge, the info
ere are significant penalnnntieieietitieititiiititiiiiietiitieiiiiiiiiiititiittiietttiittitieettteetttttttttieeeetttttiees fsssssssssssssssor making any false
___________________________________________________________________
IIGGGGGNGGGATURRRRURRURURRURRRRURRRRRRRRRURRRRRRRURURRRURRRRRURURRUUURUURUUUUUUUUUUUUUUUUUUUUUUUUUUUUUE
Avery County Closed Landfill 06-01
12/2/16 .0500
Don Misenheimer S+G
GEM 2000, 07096 11/30/2016
12/2/16 10:30AM
15/15 7/2017
0.5 L/min
42 28.20 Sunny
Project Scientist, S+G
Avery County Airport Structure #6
NE Corner >60s 1543 >60s 0 0 0 20.9 0
NW Corner >60s 1545 >60s 0 0 0 20.9 0
SE Corner >60s 1547 >60s 0 0020.9 0
SW Corner >60s 1549 >60s 0 0 0 20.9 0

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