0601_AveryCounty_MSWLF_Aug22LFG_FID1768197_20230123

DocuSign Envelope ID: C59EODA3-AOFA-4996-8ADB-C3CCBA691 BA4
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 August 25, 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) ocuSigned by: Title 1/2 3/2023 (Area Code) Telephone Number
DF�can C_ Affix NC Licensed/ Professional Geologist Seal
SiZi�l�ctfis
Signature
14 N. Boylan Ave, Raleigh, NC 27603
Facility Representative Address
F1370
NC PE Firm License Number (if applicable effective May 1, 2009)
Revised 6/2009
Date
d�p1w ar � m �rqi
OQ G�Ns�
SEAL 1/23/023
2'758
+'N�hGFOLOG�4'�,
,,,,,y C.. .ic'��.•'`'.

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DocuSign Envelope ID: C59EODA3-AOFA-4996-8ADB-C3CCBA691 BA4
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 — August 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+G1 is pleased to present this report
regarding the operation and maintenance (0&M1 of the Avery County Closed MSW Landfill
(Permit No. 06-011 Landfill Gas Collection and Control System (LFGCCS), and the perimeter
monitoring probes for August 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.

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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-7 and W-10 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 WELL (PERIMETER) 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-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 14.9%, P-3 was 1.4%, and P-7 was 20%. 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
three (3) probes with detectable levels of methane saw an increase in concentration from the
July 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-3 and P-7 will continue to be monitored closely. S+G will continue to monitor the
methane concentrations at the site monthly, and advise the County as needed on repairs
required to maintain an effective collection system.

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Ms. Drummond
January 23, 2023
Page 3 of 4
The next monitoring event is scheduled for September 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.
DocuSiDDgned by:
A
10B56EEF9EA34ED...
Kyle M. Bonnett
Environmental Technician ext. 141
kyle(dsmithgardnerinc.com
Attachments
cc: Eric Foster — Avery County
file
DocuSigned by:(�
Scan c— tZI ",
3B830K978EA4E6...
Seth C. Rickerts, P.G.
Project Geologist ext. 135
sethfdsmithgardnerinc.com
.�°r` C A
SEAL 1/3,
2758
CO
'•.,j OLOG�
H:\Projects\Avery County INCI\02 AC Comptiance\LFG Monitoring\MSM2022\02 February 2022\February 2022 Avery MSW LFG Monitoring Report.docx
3

DocuSign Envelope ID: C59EODA3-AOFA-4996-8ADB-C3CCBA691 BA4
Ms. Drummond
January 23, 2023
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FIGURES

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• T� ' 1 • . 0 EXISTING LANDFILL GAS PROBE
• +• ® OFFSITE STRUCTURE TO BE
9 ' •^ ■ 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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TABLES

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DocuSign Envelope ID: C59EODA3-AOFA-4996-8ADB-C3CCBA691BA4
SMITH+GARONER
40 ORO •
DIE September 9, 2022
BY KMB
Lei ce I D
[ate
G-#
CU
C2
Bel ame
Irit.Terrperah.re
Irit.3atic
R�essae
A4.3atic
F tessLre
Irit.DfF.
F tessae*
Irit.Ffav
A4.Rav
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Ressl-re
nyd dcV yyyy
%
%
%
%
deg F
i n Fi0
i n F-0
i n F20
3fm
WM
i n F20
AVERY-W1
8/25/2022
22.9
22.1
0.1
54.9
86.2
-3.5
-3.74
««
N/R
N/R
-3.85
AVERY-W2
8/25/2022
46.2
23.3
0.1
30.4
79•2
-1.6
-1.94
««
N/R
N/R
-3.87
AVERY-W3
8/25/2022
66.3
26.2
0.1
7.4
80.4
-2.82
-2.93
««
N/R
N/R
-3.85
AVE RY-W4
8/25/2022
20.5
19.2
0.5
59.8
88.2
-3.98
-3.98
««
N/R
N/R
-3.9
AVERY-W5
8/25/2022
23.4
22.1
0.5
54
96.8
-2.81
-2.8
««
N/R
N/R
-3.97
AVERY-W6
8/25/2022
8.8
15.8
3.2
72.2
89.7
21.05
21.09
««
N/R
N/R
-4
AVERY-W7
8/25/2022
1.4
9.1
8.5
81
85.4
8.2
8.58
««
N/R
N/R
-4.18
AVERY-W8
8/25/2022
13.3
15.5
4.4
66.8
96•8
-3.62
-3.63
««
N/R
N/R
-4.18
AVERY-W9
8/25/2022
68.4
25.7
1 0.1
5.8
88.7
-3.6
-3.63
««
N/R
N/R
-3.66
AVERY-W10
8/25/2022
32.6
16.4
9.2
41.8
83.4
1.86
2.9
««
N/R
N/R
-3.99
Av-Flare
8/25/2022
19.5
15.5
4.5
60.5
97.4
34.78
34.79
-9.663
0
0
34.8
*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. Overpul ling by adjacent extraction wells
may also result in negative pressure being displayed.
NR= not recorded

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ATTACHMENT
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: 08/25/2022 NC Landfill Rule ( 0500 or 1600)• .0500
Name and Position of Sample Collector:
Kyle M. Bonnett, Staff Environmental Technician
Type and Serial Number of Gas Meter: GEM5000, G506472
Date and Time of Field Calibration: 08/25/2022, 1204
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: 73 F Barometric Pressure: 30.18 in Hg General Weather Conditions: Sunny
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
Sainple Tube
Purge
Time
Time
Pumped (s)
Initial
°,ZEL
Stabilized
°,,ZEL
Of4L-H4
by
Volume
%02
%CO2
Notes
H 2 S p p m
P-1
>60s
1504
>60s
298
298
14.9
9.6
9.2
7
P-2
>60s
1435
>60s
0
0
0.0
15.7
0.0
7
P-3
>60s
1430
>60s
28
28
1.4
13.4
3.7
7
P-4
>60s
1423
>60s
0
0
0.0
14.2
3.1
6
P-5
>60s
1416
>60s
0
0
0.0
14.3
2.5
7
P-6
>60s
1410
>60s
0
0
0.0
12.8
5.2
7
P-7
>60s
1358
>60s
400
400
20
0.2
12.4
7
P-8
>60s
1402
>60s
0
0
0.0
14.5
3.2
7
P-9
>60s
1445
>60s
0
0
0.0
14.6
1.2
6
P-10
>60s
1443
>60s
0
0
0.0
13.9
3.2
7
P-11
>60s
1427
>60s
0
0
0.0
13.7
2.2
6
P-12
>60s
1405
>60s
0
0
0.0
15.5
0.0
7
P-13
>60s
1456
>60s
0
0
0.0
3.3
11.3
6
Airport Structures
>60s
1118
>60s
0
0
0.0
15.6
0.0
7
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.
DocuSigned by:
10B56EEF9FA,iaGn
SIGNATURE
Staff Environmental Technician
TITLE

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ATTACHMENT 2
HISTORICAL PERIMETER MONITORING PROBE TRENDS

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SMITH GARDNER
% CH4 by
Volume
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
v
Installation of W9/P3
Connection
Installation of P7/W8
and P1/W10 Connection
Avery County MSW Landfill
Landfill Gas Monitoring Well Network
Methane Concentrations Between January 2014 and July 2022
By: KMB
Date: 9/9/2022
—Pi
Well
- P3
- P7

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