0601_AveryCounty_MSWLF_July22LFG_FID1768194_20230123

DocuSign Envelope ID: 50ACFDA8-19A5-4010-8B4B-26A9F2F451B0
DENR USE ONLY ❑Paper Report ❑Electronic Data - Email CD (data loaded: Yes / No Doc/Event #:
NC DENR I IEnvironmental Monitoring
Division of Waste Management - Solid Waste Reporting 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).
Instructions:
Prepare one form for each individually monitored unit.
Please type or print legibly.
Attach a notification table with values that attain or exceed NC 2L groundwater standards or NC 2B surface water standards. The notification
must include a preliminary analysis of the cause and significance of each value. (e.g. naturally occurring, off -site source, pre-existing
condition, etc.).
Attach a notification table of any groundwater or surface water values that equal or exceed the reporting limits.
Attach a notification table of any methane gas values that attain or exceed explosive gas levels. This includes any structures on or nearby the
facility (NCAC 13B .1629 (4)(a)(i).
Send the original signed and sealed form, any tables, and Electronic Data Deliverable to: Compliance Unit, NCDENR-DWM, Solid Waste
Section, 1646 Mail Service Center, Raleigh, NC 27699-1646.
Solid Waste Monitoring Data Submittal Information
Name of entity submitting data (laboratory, consultant, facility owner):
Smith Gardner, Inc.
Contact for questions about data formatting. Include data preparer's name, telephone number and E-mail address:
Name: Seth C. Rickerts, PG
E-mail: [e-mail]
Phone: [phone] x 140
NC Landfill Rule: Actual sampling dates (e.g.,
Facility name: Facility Address: Facility Permit # (.0500 or .1600) October 20-24, 2006)
Avery County Closed MSW Landfill Brushy Creek Road, Spruce Pine, NC 06-01 .0500 July 27, 2022
Environmental Status: (Check all that apply)
❑ Initial/Background Monitoring ❑ Detection Monitoring ❑X Assessment Monitoring Corrective Action
of data submitted: (Check all that apply)
Groundwater monitoring data from monitoring wells ❑X
Groundwater monitoring data from private water supply wells ❑
Leachate monitoring data El
water monitoring data
Methane gas monitoring data
Corrective action data (specify)
Other(specify)
Notification attached?
e No. No groundwater or surface water standards were exceeded.
Yes, a notification of values exceeding a groundwater or surface water standard is attached. It includes a list of groundwater and surface water
monitoring points, dates, analytical values, NC 2L groundwater standard, NC 2B surface water standard or NC Solid Waste GWPS and
preliminary analysis of the cause and significance of any concentration.
❑X Yes, a notification of values exceeding an explosive methane gas limit is attached. It includes the methane monitoring points, dates, sample
values and explosive methane gas limits.
Certification
To the best of my knowledge, the information reported and statements made on this data submittal and attachments are true and correct.
Furthermore, I have attached complete notification of any sampling values meeting or exceeding groundwater standards or explosive gas
levels, and a preliminary analysis of the cause and significance of concentrations exceeding groundwater standards. I am aware that there
are significant penalties for making any false statement, representation, or certification including the possibility of a fine and imprisonment.
Seth C. Rickerts, PG Project Geologist 919-828-0577 x 135
Facility Representative Name (Print) DocuSigned by: Title 1/2 3/2023 (Area Code) Telephone Number
[_Stan G. 2r V'A' Affix NC Licensed/ Professional Geologist Seal
Signature
14 N. Boylan Ave, Raleigh, NC 27603
3B8305C978EME6... Date
Facility Representative Address
F1370
NC PE Firm License Number (if applicable effective May 1, 2009)
Revised 6/2009
"1""'! 711.H r�rr
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SEAS 1/23
rVr fi� LOG
•� :L'. RAC+,o
1INH/f l list lIlb

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SMITH GARDNER
ABBRESS TEL WEB
14 N. Boylan Avenue, Raleigh NC 27603 919.820.0577 www.smithgardnerinc.com
January 23, 2023
Ms. Jaclynne Drummond
NCDENR DWM Solid Waste Section
2090 U.S. 70 Highway
Swannanoa, North Carolina 28778-8211
RE: Operations, Monitoring, and Maintenance Report — July 2022
Avery County Closed MSW Landfill (Permit No. 06-01)
Spruce Pine, North Carolina
Dear Ms. Drummond:
On behalf of Avery County (County), Smith Gardner, Inc. (S+G) is pleased to present this report
regarding the operation and maintenance (0&M) of the Avery County Closed MSW Landfill
(Permit No. 06-01) Landfill Gas Collection and Control System (LFGCCS), and the perimeter
monitoring probes for July 2022. Site details are provided below.
SITE HISTORY
The Avery County Closed MSW landfill is located approximately 0.6 miles southeast of the
intersection of Highway 19 and Brushy Creek Mountain Road next to the Avery County Airport
and the Unimin Corporation mine facility. There is no active mining in the immediate vicinity
of the landfill.
The MSW landfill was operated from 1970 until it closed in 1993. The property consists of
approximately 14.4 acres, with the landfill footprint occupying approximately 9.6 acres of the
site. Landfill topography ranges in elevation from approximately 2770 ft. msl to 2670 ft. msl,
and slopes downhill toward Brushy Creek.
Landfill gas monitoring and LFGCCS maintenance is completed on a monthly basis due to
landfill gas concentrations detected in monitoring probes off -site.
LFG COLLECTION AND CONTROL SYSTEM MONITORING ACTIVITIES
The site has an active Landfill Gas Collection and Control System (LFGCCS) consisting of 10
landfill gas extraction wells (W-1 through W-10), HDPE piping for transmission of collected
landfill gas, a one (1) horsepower blower, a condensate trap and storage tank, a candlestick
flare, and associated valves and gauges.
Well field and flare station data are provided in the attached Table 1.

DocuSign Envelope ID: 50ACFDA8-19A5-4010-8B4B-26A9F2F451B0
Ms. Drummond
January 23, 2023
Page 2 of 4
LFG Extraction Well Field
• W-1 through W-10: S+G performed methane (CH4), oxygen (02), and carbon dioxide
(CO2) monitoring as well as temperature and pressure monitoring. In general, gas
quality varies across the wellfield. All wells with the exception of W-3 and W-9 had
recorded oxygen levels below 5% this sampling event. The wells will continue to be
tuned to limit the concentration of oxygen in the landfill gas.
Flare Station
Gas quality measured at the flare is nominal with low levels recorded of methane, and
moderate levels recorded of oxygen. The wellfield will continue to be monitored, tuned,
and maintained as necessary to identify potential issues with the system and to improve
gas quality levels.
LFG MONITORING WILL (PERIM[TER) MONITORING PROGRAM
S+G performed monitoring of the perimeter LFG monitoring network during this event. The
network consists of probes P-1 through P-13 located around the facility, and in some cases,
on adjacent properties. Monitoring results for this month indicate the following probes have
detectable methane concentrations:
• P-1
• P-2
• P-3
• P-7
Monitoring probes P-1, P-2, P-3, and P-7 all had observed concentrations above the lower
explosive limit (LEL); the concentration in P-1 was 10.4%, P-2 was 6.8%, P-3 was 1.4%, and
P-7 was 7.2%. P-2 has not had a detectable level of methane in over a year. This has been
noted and we will continue to closely monitor P-2 for any detectable methane levels in the
future. Overall, the four (4) probes with detectable levels of methane saw a decrease in
concentration from the June 2022 monitoring event.
Attachment 1 includes the monitoring forms with results while Attachment 2 provides a CH4
concentration graph over time for monitoring wells that have historically had methane
present. Monitoring of the current well network will continue, and data will be reported to
NCDEQ and the County.
CONCLUSIONS
In general, the landfill gas extraction system continues to operate nominally. The landfill gas
extraction wells will continue to be tuned to limit oxygen into the system. Monitoring probes
P-1, P-2, P-3 and P-7 will continue to be monitored closely. S+G will continue to monitor the

DocuSign Envelope ID: 50ACFDA8-19A5-4010-8B4B-26A9F2F451B0
Ms. Drummond
January 23, 2023
Page 3 of 4
methane concentrations at the site monthly, and advise the County as needed on repairs
required to maintain an effective collection system.
The next monitoring event is scheduled for August 2022. If you have any questions, or require
additional information, please contact us at your earliest convenience at 919-828-0577 or by
e-mail (address below).
Sincerely,
SMITH GARDNER, INC.
DocuSigned by:
$a 141m
10B56EEF9EA34ED...
Kyle M. Bonnett
Environmental Technician ext. 140
kvlefdsmithaardnerinc.com
Attachments
cc: Eric Foster - Avery County
file
z= SEAL 1-y
i 27�8 1/23/2T23
DocuSigned by: = R
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3B8305C978EA4E6... ,� q� •, R� '
II C. r
Seth C. Rickerts, P.G. „,�j""�V'`�y
Project Geologist ext. 221
seth(dsmithaardnerinc.com
HAProjects\Avery County (NCI\02 AC Compliance\LFG Monitoring\MSW\2022\02 February2022\February 2022 Avery MSW LFG Monitoring Report.docx

DocuSign Envelope ID: 50ACFDA8-19A5-4010-8B4B-26A9F2F451B0
Ms. Drummond
January 23, 2023
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MUM

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• T� ' 1 • . 0 EXISTING LANDFILL GAS PROBE
d®r +• ® OFFSITE STRUCTURE TO BE
' •^ ■ MONITORED
,,. •�;�` REFERENCES
«�A 1. ADJACENT PROPERTIES ARE FROM AVERY COUNTY GIS MAPPING
DEPARTMENT.
_• r 2. MONITORING WELL LOCATIONS FROM FIELD SURVEY DATED 1/14/08, BY
SURVEYING SOLUTIONS, P.C.
3. PROPERTY LINE FROM FIELD SURVEY DATED APRIL 9, 2010, BY
.1�►.,N APPALACHIAN PROFESSIONAL LAND SURVEYORS & CONSULTANTS.
• 4. LFG PROBES LOCATIONS FROM FIELD SURVEY DATED APRIL 9, 2010, BY
APPALACHIAN PROFESSIONAL LAND SURVEYORS & CONSULTANTS.
�, • • PROBE P-2, P-3, AND P-9 THROUGH P-13 LOCATIONS WERE NOT
•; SURVEYED AND ARE APPROXIMATE.
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DocuSign Envelope ID: 50ACFDA8-19A5-4010-8B4B-26A9F2F451B0
TABLES

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DocuSign Envelope ID: 50ACFDA8-19A5-4010-8B4B-26A9F2F451B0
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DIE July 29, 2022
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AVERY-W1
7/27/2022
14
22.2
1.2
-0.1
62.6
-35.37
-35.35
0.002
1.5
1.3
-35.48
AVERY- W2
7/27/2022
52.6
24.4
0
12.9
23
- 31.94
- 31.89
- 0.351
0
0
- 34.85
AVERY- W3
7/27/2022
23.9
12
12.5
0
51.6
- 35.23
- 35.16
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0.2
0.2
- 35.62
AVE RY- W4
7/27/2022
21.9
20.1
0
66.7
58
- 35.77
- 35.78
0.011
3.2
3.1
- 35.51
AVERY- W5
7/27/2022
25.5
23.6
0
44.7
50.9
- 34.81
- 34.84
- 0.872
0
0
- 35.87
AVERY- W6
7/27/2022
10.8
16.8
3
73.9
69.4
-12.14
-12.1
0.02
8.1
8.1
- 35.93
AVERY-W7
7/27/2022
3.5
15.7
4.1
65.2
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-32.17
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-35.17
AVERY- W8
7/27/2022
13.1
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12.6
66.8
- 33.37
- 34.14
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7.4
- 35.39
AVERY- W9
7/27/2022
0
0.1
20.2
33.8
79.7
- 34.84
- 34.86
- 0.321
0
0
- 34.98
AVERY-W10
7/27/2022
71.3
26.5
0
35.5
2.2
-34.93
-34.92
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N/R
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-35.58
Av-Flare
7/27/2022
16.7
13.5
7.5
43
62.3
1.62
1.66
1.236
24.9
23.7
1.69
*The differential pressure measurement should be positive. A negative differential pressure may indicate no gas flow. Negative
differential pressure can be the result of dirt or water obstructing the pitot tube perforations. Over puI ling by adjacent extraction wel Is
may also result in negative pressure being displayed.
NR= not recorded

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ATTACHMENT 1
PERIMETER MONITORING PROBE DATA

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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: Avery County Closed MSW Landfill Permit Number: 06-01
Date of Sampling: 07/27/2022 NC Landfill Rule (.0500 or .1600): .0500
Name and Position of Sample Collector: Daniel J. Pantaleo, Staff Environmental Technician
Type and Serial Number of Gas Meter: GEM5000, G506472
Date and Time of Field Calibration: 07/27/2022, 0850
Calibration Date of Gas Meter: 12/2021
Type of Field Calibration Gas (15115 or 35/50): 35/15 Expiration Date of Field Calibration Gas Canister: 10/2023
Pump Rate of Gas Meter: 0.5 LPM
Ambient Air Temperature: 82 F Barometric Pressure: 30.19 in Hg General Weather Conditions: Partly Cloudy
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
Location or
LFG Well ID
Sample Tube
Purge
Time
Time
Pumped {s)
Initial
°,ZEL
Stabilized
°,,ZEL
Of4L-H4
by
N"ohime
%02
%CO2
Notes
H 2 S p p m
P-1
>60s
1136
>60s
208
208
10.4
13.6
7.6
0
P-2
>60s
1132
>60s
136
136
6.8
0.0
26.6
1
P-3
>60s
1057
>60s
28
28
1.4
17.4
2.6
1
P-4
>60s
1054
>60s
0
0
0.0
18.8
1.8
0
P-5
>60s
1044
>60s
0
0
0.0
18.0
2.6
0
P-6
>60s
1038
>60s
0
0
0.0
19.4
0.6
6
P-7
>60s
1034
>60s
144
144
7.2
1.3
13.0
0
P-8
>60s
1029
>60s
0
0
0.0
18.6
1.8
1
P-9
>60s
1108
>60s
0
0
0.0
19.4
1.2
0
P-10
>60s
1112
>60s
0
0
0.0
17.8
1.7
0
P-11
>60s
1101
>60s
0
0
0.0
17.2
2.6
0
P-12
>60s
1032
>60s
0
0
0.0
20.0
0.1
1
P-13
>60s
1124
>60s
0
0
0.0
6.3
11.6
1
Airport Structures
>60s
1118
>60s
0
0
0.0
20.6
0.0
0
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.
EDocuSigned by:
� $osw.W
10BS6EEF9EA34ED...
SIGNATURE
Staff Environmental Technician
TITLE

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ATTACHMENT 2
HISTORICAL PERIMETER MONITORING PROBE TRENDS

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DocuSign Envelope ID: 50ACFDA8-19A5-4010-8B4B-26A9F2F451B0
SMITH GARDNER
% CH4 by
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
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By: DJP
Date: 7/29/2022
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