0601_AveryCounty_MSWLF_Oct22LFG_FID1768200_20230123

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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: Joan A. Smvth. PG
E-mail: [e-mail]
Phone: [phone] x 221
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 October 11, 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.
Joan A. Smyth, PG Senior Hydrogeologist 919-828-0577 x 221
.6tative Name (Print) Title (Area Code) Telephone Number
-'` L 10/13/2022 Affix NC Licensed/ Professional Geologist Seal
Date
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
22

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SMITH GARDNER
ADDRESS TEL WEB
14 N. Boylan Avenue, Raleigh NC 27603 919.828.0577 www.smithgardnerinc.com
October 12, 2022
Ms. Jaclynne Drummond
NCDENR DWM Solid Waste Section
2090 U.S. 70 Highway
Swannanoa, North Carolina 28778-8211
RE: Operations, Monitoring, and Maintenance Report — October 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. 06-011 Landfill Gas Collection and Control System (LFGCCS), and the perimeter
monitoring probes for October 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
October 12, 2022
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 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-3, and P-7 all had observed concentrations above the lower explosive
limit (LEL); the concentration in P-1 was 67.3%, P-3 was 69.1 %, and P-7 was 9.5%. 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
September 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
October 12, 2022
Page 3 of 4
The next monitoring event is scheduled for November 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.
I
�Ptvu'e.i V A Vui3O,1.
DocuSigned by:
5DD73DOAEAB2442..
Daniel J. Pantaleo
Environmental Technician ext. 140
daniel(dsmithaardnerinc.com
Attachments
cc: Eric Foster - Avery County
file
CARO
p ENS
+�1a1 v
�.
10/1 /2
1369
DocuSigned by:
BEB 11
Joann A. Smythyth , P.G.
Senior Hydrogeologist ext. 221
ioan(dsmithaardnerinc.com
H:\Projects\Avery County INCA02 AC Compliance\LFG Monitoring\MSW\2022\02 February 2022\February 2022 Avery MSW LFG Monitoring Report.docx
2

DocuSign Envelope ID: F275A73D-9501-493D-9CB0-F2D2A1838770
Ms. Drummond
October 12, 2022
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11011,19

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T� ' 1 • . 0 EXISTING LANDFILL GAS PROBE
• +• ® OFFSITE STRUCTURE TO BE
' •^ ■ MONITORED
,,. •�;�` REFERENCES
«� 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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SMITH GARDN ER
DIE October 12, 2022
BY DJ P
D3j oe I D
Die
CI #
C,'P
C2
BIanoe
Irrt. Tenperett.re
Irit. Setic
Resare
P4. Setic
Resare
Irit. Dff.
Resare*
ht. RoN
AJ. Rav
94em
Resare
m-rY dcV yyyy
%
%
%
%
deg F
i n I PO
i n F-PO
i n 1i0
afm
afm
i n 120
AVERY- W1
10/11/2022
69.7
29.8
0.5
0
46.2
0.19
0.22
0.02
0.5
0.4
0.18
AVERY- W2
10/11/2022
64.7
23.7
1 0.3
11.3
48.8
0.21
0.22
- 0.132
0
0
0.19
AVERY- W3
10/11/2022
72
26.4
0.6
1
51.6
0.33
0.37
- 0.005
0
0
0.18
AVERY- W4
10/11/2022
69.3
23.8
0.6
6.3
54
0.18
0.19
0.009
3.5
3.2
0.11
AVERY- W5
10/11/2022
47.7
25.9
0.9
25.5
54.5
0.08
0.08
0.003
0.2
0.2
0.06
AVERY- W6
10/11/2022
51.8
31.8
0.7
15.7
50.1
0.04
0.06
- 0.001
«»
3
0.06
AVERY- W7
10/11/2022
52.9
27.8
0.6
18.7
51
0.04
0.08
- 0.001
0
0.2
0.09
AVERY- W8
10/11/2022
57.7
36.5
0.6
5.2
52.7
0.04
0.05
- 0.001
«»
3.9
0.05
AVERY-W9
10/11/2022
73.2
26.6
0.3
N/A
45.8
0.2
0.2
0.002
1.5
1.3
0.14
AVERY- W10
10/11/2022
65.5
34.2
0.3
0
46.4
0.23
0.4
0.008
3.2
4
0.15
Av-Flare
10/11/2022
66.3
25.7
0.8
7.2
50.5
-0.01
-0.01
-0.006
0
0
0
*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. Overpulling by adjacent extraction wells 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: 10/11 /2022 NC Landfill Rule (.0500 or .1600): .0500
Name and Position of Samnle Collector- Daniel J. Pantaleo Staff Environmental Technician
Type and Serial Number of Gas Meter: GEM5000, G506472
Date and Time of Field Calibration: 10/11/2022, 0810
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: 68 F Barometric Pressure: 30.28 in Hg General Weather Conditions: Partly 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
Of4CH4
by
N"ohlme
%02
%CO2
Notes
H 2 S p p m
P-1
>60s
1209
>60s
1346
1346
67.3
1.0
25.3
1
P-2
>60s
1203
>60s
0
0
0.0
19.8
0.2
0
P-3
>60s
1155
>60s
1382
1382
69.1
1.1
27.2
6
P-4
>60s
1130
>60s
0
0
0.0
19.9
1.8
0
P-5
>60s
1124
>60s
0
0
0.0
19.3
2.7
0
P-6
>60s
0950
>60s
0
0
0.0
20.3
0.6
2
P-7
>60s
0944
>60s
190
190
9.5
2.7
13.5
5
P-8
>60s
0936
>60s
0
0
0.0
18.3
4.1
1
P-9
>60s
1217
>60s
0
0
0.0
18.9
2.7
2
P-10
>60s
1213
>60s
0
0
0.0
17.2
4.1
0
P-11
>60s
1159
>60s
0
0
0.0
17.3
3.5
0
P-12
>60s
0940
>60s
0
0
0.0
17.9
11.7
3
P-13
>60s
>60s
Inaccessible
Airport Structures
>60s
1226
>60s
0
0
0.0
19.9
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.
DocuSigned, by:
LOLVUJ
SIGNATURE
Staff Environmental Technician
TITLE

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ATTACHMENT 2
HISTORICAL PERIMETER MONITORING PROBE TRENDS

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SMITH GARDNER
% CH4 by
Vol ume
80.0 Installation of M/P3
.. Inctnilo*inn of D7/\A/Q
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
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ro w O ro v O co w O ca w O ro w O ro 61 O ra N O cn w O m av
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t� •o • .:= == .1 � . • t�J, ••o .II
By: DJP
Date: 10/ 12/2022
P1
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P3
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