0601_AveryCounty_MSWLF_LFG_FID1795791_20230523

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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 213 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, P.G.
E-mail: [e-mail]
Phone: [phone] x 135
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 April 25, 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.
Seth C. Rickerts, P.G. Project Geologist 919-828-0577 x 135
Facility Represplta):yy�g 6Vaq Wyrint) Title 5/23/2023 (Area Code) Telephone Number
(( Affix NC I inan,,r, PrnfP,,, nnal C�anlogiSt Seal
``1,t115ry F1 IF F i
5/4423
2 758
11f1«br�fF
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

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DocuSign Envelope ID: 6FB571EB-ADC6-4702-A87E-3EA15484FADC
SMITH GARDNER
ABBRESS TEL WEB
14 N. Boylan Avenue, Raleigh NC 27603 919.820.0577 www.smithgardnerinc.com
May 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 — April 2023
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 April 2023. Site details are provided below.
4114 ll1111;y9
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 the November 2022 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
May 23, 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 an oxygen level of 0% 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 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-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 71.4%, P-3 was 47.4% and P-7 was 11.6%. Overall,
the three (3) probes with detectable levels of methane saw an increase in concentration from
the March 2023 monitoring event. The cause of the general 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.
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.

DocuSign Envelope ID: 6FB571EB-ADC6-4702-A87E-3EA15484FADC
Ms. Drummond
May 23, 2023
Page 3 of 4
The next monitoring event is scheduled for May 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.
DocuSiigDgned by:
A
10B56EEF9EA34ED...
Kyle M. Bonnett
Environmental Technician ext. 140
kylefdsmithgardnerinc.com
Attachments
cc: Eric Foster - Avery County
file
DocuSigned by::
Scan tZI ",
3B8305C978EA4E6...
Seth C. Rickerts, P.G.
Project Geologist ext. 135
sethfdsmithgardnerinc.com
.�°r` C A
"�;ENSF
SEAL
2758 5/13/A023

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MUM

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• T� ' 1 • . 04 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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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: 04/25/2023 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: 04/25/2023, 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: 45 F Barometric Pressure: 27.36 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
Of4CH4
by
Volume
%02
%CO2
Notes
H 2 S p p m
P-1
>60s
1157
>60s
1430
1430
71.5
0.3
25.6
2
P-2
>60s
1153
>60s
0
0
0.0
20.4
0.0
1
P-3
>60s
1150
>60s
948
948
47.4
4.4
25.7
1
P-4
>60s
1143
>60s
0
0
0.0
19.9
1.2
1
P-5
>60s
1115
>60s
0
0
0.0
20.0
2.5
0
P-6
>60s
0945
>60s
0
0
0.0
20.0
1.2
0
P-7
>60s
0939
>60s
232
232
11.6
4.1
7.2
1
P-8
>60s
0931
>60s
0
0
0.0
20.1
1.6
2
P-9
>60s
1204
>60s
0
0
0.0
19.4
1.4
2
P-10
>60s
1201
>60s
0
0
0.0
18.2
2.0
2
P-11
>60s
1147
>60s
0
0
0.0
15.6
3.5
0
P-12
>60s
0935
>60s
0
0
0.0
20.8
1.1
2
P-13
>60s
1212
>60s
0
0
0.0
10.9
6.3
1
Airport Structures
>60s
1217
>60s
0
0
0.0
20.9
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.
Environmental Technician
SIGNATURE
TITLE

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SMITH GARDNER
is
12 •.0• •
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DIE April 27, 2023
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AVERY-W1
4/25/2023
73.7
26.2
0
0.1
50.5
0.24
0.26
-0.007
0
0
0.24
AVERY-W2
4/25/2023
79
21
0
0
48.5
0.26
0.26
-0.009
0
0
0.22
AVERY-W3
4/25/2023
74.8
25.1
0
0.1
52.3
0.38
0.4
-0.033
0
0
0.15
AVE RY-W4
4/25/2023
76
24
0
0
50.5
0.24
0.24
0.003
1.9
1.6
0.24
AVERY-W5
4/25/2023
71
29
0
0
49.7
0.07
0.07
0.002
0.1
0.1
0.06
AVERY-W6
4/25/2023
69.4
26.4
0
4.2
55.9
0.04
0.06
0.003
3.4
4.5
0.03
AVERY-W7
4/25/2023
71
27.2
0
1.8
57.4
0.12
0.12
0
0
0.1
0.05
AVERY-W8
4/25/2023
65.7
34.3
0
0
58.1
0.02
0.03
0.005
4.5
4.4
0.03
AVERY-W9
4/25/2023
70.6
29.4
0
0
51.6
0.24
0.25
-0.002
«»
«»
0.22
AVERY-W10
4/25/2023
70.4
29.6
0
0
51.1
0.23
0.25
0
0
0.9
0.21
Av-Flare
4/25/2023
74.8
25.1
0
0.1
54
0.01
0.01
0.011
2.7
2.7
0.02
*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 2
HISTORICAL PERIMETER MONITORING PROBE TRENDS

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80.0
70.0
60.0
E 50.0
0
s
40.0
30.0
20.0
10.0
SMITH+GARONER
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W9/P3 Connection Install Loss of Blower Motor
(September 11,2014 (October2022)
Installation of P7/W8
(September 3, 2015)
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By DJP
Date: 04/27/2023
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