0601_AveryCounty_MSWLF_Feb23LFG_FID1773669_20230228

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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 February 21, 2023
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.
Fac' it epZ§� Name (Print)
Signature
14 N. Boylan Ave, Raleigh, NC 27603
Senior Hydrogeologist 919-828-0577 x 221
Title (Area Code) Telephone Number
Facility Representative Address
F1370
NC PE Firm License Number (if applicable effective May 1, 2009)
Revised 6/2009
2/28/2023 Affix NC Licensed/ Professional Geologist Seal
Date
CAR"
EN E�
Z S E A� 9
2/2 /12
136 9
�O,9 FOL 0
A. g

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SMITH GARDNER
ADDRESS TEL WEB
14 N. Boylan Avenue, Raleigh NC 27603 919.828.0577 www.smithgardnerinc.com
February 28, 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 — February 2023
Avery County Closed MSW Lan dfill(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 February 2023. 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. It should be noted that the blower was observed to be
not operating during this monitoring event. The blower was determined to have a bad motor,
and a new blower is being pro -cured
Well field and flare station data are provided in the attached Table 1.

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Ms. Drummond
February 28, 2023
Page 2 of 4
LFG Extraction Well Field
• W-1 through W-10: S+G performed methane (CH41, 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. Due to the blower not running, no tuning was performed
during this event. The wellfield will continue to be monitored as the blower is
repaired.
Flare Station
The blower at the flare station was observed to not be in operation. S+G is working to
locate and have installed a new blower as one becomes available. Gas quality
measured at the flare showed high levels of methane and no detection 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, and P-3 both had observed concentrations above the lower explosive
limit (LEL); the concentration in P-1 was 57.6, P-3 was 64.5% and P-7 was 15.3%. Overall, the
three (3) probes with detectable levels of methane saw an increase in concentration from the
January 2023 monitoring event. The cause of the increase in methane concentration is
believed to be the result of the blower not operating.
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.

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Ms. Drummond
February 28, 2023
Page 3 of 4
CONCLUSIONS
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. The blower located at the flare
station will be repaired as soon as the necessary parts arrive.
The next monitoring event is scheduled for March 2023. 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.
E
IQ,t1i
DocuSigned by:
5DD73DOAEAB2442...
Daniel J. Pantaleo
Environmental Technician ext
daniel(asmithgardnerinc.com
Attachments
cc: Eric Foster — Avery County
file
DocuSigned by:
B9779EBA711F488...
Joan A. Smyth, P.G.
140 Senior Hydrogeologist ext.
a oan(dsmithgardnerinc.corr
C A R
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vO��OLOG�
A. S
221
H:\Projects\Avery County INCI\02 AC Compliance\LFG Monitoring\MSW\2022\02 February 2022\February 2022 Avery MSW LFG Monitoring Report.docx
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Ms. Drummond
February 28, 2023
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11011,19

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T� ' 1 • . 0 EXISTING LANDFILL GAS PROBE
• +• ® 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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TABLES

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SMITH+GARONER
40 ORO •
DIE February 28, 2023
BY DJ P
Lei ce I D
[ate
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Bel ame
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Irit.3atic
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AVERY-W1
2/21/2023
73.5
26.4
0.1
0
53.1
0.24
0.25
-0.026
0
0
0.2
AVERY-W2
2/21/2023
78.1
21.9
0
0
56.8
0.25
0.27
-0.042
0
0
0.23
AVERY-W3
2/21/2023
74.6
25.4
0
0
61.2
0.34
0.35
-0.106
0
0
0.23
AVE RY-W4
2/21/2023
75.6
24.4
0
0
64
0.22
0.22
-0.014
«»
«»
0.2
AVERY-W5
2/21/2023
70.8
29.2
0
0
68.9
0.03
0.04
-0.004
0
1 0
0.03
AVERY-W6
2/21/2023
60.2
25.2
0
14.6
59•4
0.06
0.05
0.001
1.6
1.6
0
AVERY-W7
2/21/2023
63.8
26.2
0
10
68.5
0.02
0.03
-0.004
0
0
0.04
AVERY-W8
2/21/2023
64.6
34.8
0
0.6
59•9
0
0.01
0.001
1.9
2.3
0
AVERY-W9
2/21/2023
72.5
27.4
0
0.1
60.5
0.22
0.22
-0.022
«»
«»
0.25
AVERY-W10
2/21/2023
68.4
31.6
0
0
63.7
0.24
0.25
-0.015
«»
«»
0.22
Av-Flare
2/21/2023
73.7
25.3
0
1
62.6
-0.63
-0.57
0.576
19.1
11.9
-0.06
*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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ATTACH MEN T1
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: 02/21 /2023 NC Landfill Rule (.0500 or .1600): .0500
Name and Position of Samnle Collector- Daniel J. Pantaleo - Environmental Technician
Type and Serial Number of Gas Meter: GEM5000, G506472
Date and Time of Field Calibration: 02/21/2023, 0815
Calibration Date of Gas Meter: 01 /2023
Type of Field Calibration Gas (15115 or 35/50): 35/50 Expiration Date of Field Calibration Gas Canister: 10/2023
Pump Rate of Gas Meter: 0.5 LPM
Ambient Air Temperature: 60 F Barometric Pressure: 29.77 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
N"ohlme
%02
%CO2
Notes
H 2 S p p m
P-1
>60s
1039
>60s
1270
1270
63.5
0.7
25.0
2
P-2
>60s
1026
>60s
0
0
0.0
21.4
0.0
2
P-3
>60s
1024
>60s
1322
1322
66.1
0.3
32.5
3
P-4
>60s
1013
>60s
0
0
0.0
20.5
1.8
1
P-5
>60s
1007
>60s
0
0
0.0
20.0
1.6
2
P-6
>60s
1000
>60s
0
0
0.0
20.5
1.0
2
P-7
>60s
1100
>60s
306
306
15.3
1.3
7.4
2
P-8
>60s
0929
>60s
0
0
0.0
20.4
1.4
2
P-9
>60s
1034
>60s
0
0
0.0
20.2
1.3
1
P-10
>60s
1031
>60s
0
0
0.0
10.5
8.5
2
P-11
>60s
1019
>60s
0
0
0.0
17.2
2.8
1
P-12
>60s
0933
>60s
0
0
0.0
20.5
2.5
2
P-13
>60s
1048
>60s
0
0
0.0
6.5
10.5
2
Airport Structures
>60s
1052
>60s
0
0
0.0
21.2
0.0
2
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:
� VUJ U O V(; Aj¢A
SIGNATURE
Environmental Technician
TITLE

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ATTACHMENT 2
HISTORICAL PERIMETER MONITORING PROBE TRENDS

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SMITH+GARONER �� II 6y0.1P
�fjil (1BKh7t111rLJPCbEN-1NCIiC Date: 02/28/2023
tvHl'P'1Vtirostr'hQSBitnem 2ga-d 2�i
80.0
, N5/P3 Connection Install Loss of Blower Motor ;
70.0
(September 11, 2014 (October 2022)
Installation of P7/W8
—P7
60.0
(September % 2015)
£ 50.0
o
�P3
40.0
_
—P7
e 30.0
_
20.0
10.0
0.0
o