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Home My WebLink About0601_AveryCounty_MSWLF_Nov21LFG_FID1768204_20230123DocuSign Envelope ID: D966BA35-B281-4D9F-96F6-5BF30912F66D 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: joan@smithgardnerinc.com Phone: 919-828-0577 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 November 29-30, 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 Repre�entat� Name (Print) n, � `• Signature 14 N. Boylan Ave, Raleigh, NC 27603 Title (Area Code) Telephone Number Facility Representative Address F1370 NC PE Firm License Number (if applicable effective May 1, 2009) Revised 6/2009 1/10/2023 Affix NC Licensed/ Professional Geologist Seal Date CARO p� EN 7 13691/10 20 3 '�QFotoo`5 q'b A. g .emu DocuSign Envelope ID: D966BA35-B281-4D9F-96F6-5BF30912F66D This page intentionally left blank. DocuSign Envelope ID: D966BA35-B281-4D9F-96F6-5BF30912F66D SMITH GARDNER ADDRESS TEL WEB 14 N. Boylan Avenue, Raleigh NC 27603 919.828.0577 www.smithgardnerinc.com December 5th, 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 — November 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 November 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. It should be noted that the blower was observed to be not operating during this monitoring event. Investigation into the cause of the non -operation is ongoing. Well field and flare station data are provided in the attached Table 1. DocuSign Envelope ID: D966BA35-B281-4D9F-96F6-5BF30912F66D Ms. Drummond January 10, 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 tuned 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 • P-13 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 72.9%, P-3 was 73.2% and P-7 was 18.5%. P-13 has not had a detectable level of methane in over a year, and will continue to be monitored for detectable methane levels in the future. Overall, the four (4) probes with detectable levels of methane saw an increase in concentration from the October 2022 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. DocuSign Envelope ID: D966BA35-B281-4D9F-96F6-5BF30912F66D Ms. Drummond January 10, 2023 Page 3 of 4 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, P-7 and P-13 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 next monitoring event is scheduled for December 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. EDocuSigned by: 14?tVU' e.l PA Vu '0'1 .o 5DD73DOAEAB2442.. Daniel J. Pantaleo Environmental Technician ext. 140 daniel(asmithaardnerinc.com Attachments cc: Eric Foster - Avery County file a DocuSigned by: 1 B9779EBA711F488... Joan A. Smyth, P.G. Senior Hydrogeologist ext. 221 ioanfdsmithaardnerinc.com H:\Projects\Avery County INCj\02 AC Compliance\LFG Monitoring\MSW\2022\02 February 2022\February 2022 Avery MSW LFG Monitoring Report.docx CA0 y�CEN Ep SSEAL 7 1I3691/10 2( CFO` O A. g DocuSign Envelope ID: D966BA35-B281-4D9F-96F6-5BF30912F66D Ms. Drummond December 28, 2022 Page 4 of 4 This page intentionally left blank. DocuSign Envelope ID: D966BA35-B281-4D9F-96F6-5BF30912F66D 11011,19 DocuSign Envelope ID: D966BA35-B281-4D9F-96F6-5BF30912F66D This page intentionally left blank.