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Home My WebLink About4501_Henderson_MSWLF_LFGRequest_FID1321754_20190529G GOLDER May 29, 2019 Ms. Jaclynne Drummond, Hydrogeologist North Carolina Department of Environmental Quality Division of Waste Management - Solid Waste Section 2090 US Highway 70 Swannanoa, North Carolina 28778 828-296-4706 Project No. 0839650618.300 REQUEST TO REMOVE LANDFILL GAS ASSESSMENT WELLS TR-2 AND TR-3 CLOSED HENDERSON COUNTY LANDFILL, PERMIT NO. 45-01 HENDERSON COUNTY, NORTH CAROLINA Dear Jackie, On behalf of Henderson County, Golder Associates NC, Inc. requests the North Carolina Department of Environmental Quality (NC DEQ) consider the removal of assessment landfill gas monitoring wells TR-2 and TR-3 from the methane compliance monitoring network at the closed Henderson County Landfill. Wells TR-2 and TR-3 were formerly compliance monitoring wells until the submittal of the Landfill Gas Remediation Plan — Phase 2 (Plan) on January 6, 2015, at which time they were replaced with compliance monitoring wells MP-7, MP-8, and MP-9. In accordance with the Plan, TR-2 and TR-3 were to be continued to be monitored as assessment wells. Henderson County plans to remove the barn located north of the closed municipal solid waste (MSW) landfill, labelled as the Trace Barn on Drawing 1, and excavate soil in the area, which includes where landfill gas wells TR-2 and TR-3 are located. The soil will be used for cap maintenance of the closed MSW and closed construction and demolition landfills and supporting infrastructure. Soil excavation in the area of TR-2 would begin as soon as possible and therefore, TR-2 would be removed from the monitoring network upon approval from the NC DEQ. Well TR-3 will continue to be monitored on a quarterly basis until such time that excavation activities expand into the TR-3 area. As TR-2 and TR-3 are assessment wells and compliance wells MP-7, MP-8, and MP-9 will remain in the compliance network, the removal of TR-2 and TR-3 will not compromise the effectiveness of the monitoring network (Drawing 1). Compliance wells MP-7, MP-8, and MP-9 have not had any detections above the calibration range of the instrument during quarterly events. If you have any questions or concerns, please contact us at 336-852-4903. Golder Associates NC, Inc. 5B Oak Branch Drive, Greensboro, North Carolina, USA 27407 Engineering Lic. No. C-2862/Geology Lic. No. C-399 T: +1 336 852-4903 F: +1 336 852-4904 Golder Associates NC, Inc. is a licensed user of the Golder trademark, and an associated operating entity. Golder and the G logo are trademarks of Golder Associates Corporation. golder.com Ms. Jaclynne Drummond, Hydrogeologist North Carolina Department of Environmental Quality Sincerely, Golder Associates NC, Inc. I f" David "Dusty" Y. Reedy Il, PG Senior Hydrogeologist Rachel P. Kirkman, PG Associate and Senior Consultant Project No. 0839650618.300 May 29, 2019 CC: Marcus Jones, PE, Director of Engineering, Henderson County, 1 Historic Courthouse Square, Suite 6, Hendersonville, NC 28792. 828-694-6560. majones@hendersoncountync.org Greg Wiggins, Operations Manager, Henderson County, 191 Transfer Station Drive, Hendersonville, North Carolina 28791. 828-694-7982. gwiggins@hendersoncountync.org Attachments: Methane Monitoring Location Map g:\projects\henderson county\0839650618\phase 300 - general consulting\01 - request to remove Ifg assessment wells\200 deliverables\252 final issued\0839650618.300-001-r-rev0-request.docx GOLDER 2 r TRACE BARN EW 2 EW�EW a Q 1 ❑ Ci1T-OFF TRENCH VENT 2 - PA \ [ Alf 6 28 ❑2 W. ❑ 5 � u� V I 7 1 CLOT CUT-OFF TRENCH VENT 1 E Ew- 7 t E - , gEMOLI LANDFILL, CLO VI ATEMP 1 L DOSED C6 f 4 ' AST Hi E f o i �3 Ew - , ❑ to 1 r I LOSE e EANON , E / o MP-3 -45 W- w' P j ❑EW-I9 , ti dd❑ 199t r 4 PRIVAT ROPE LEGEND EXISTING 10 FT, CONTOUR EXISTING 2 FT. CONTOUR — - - — PROPERTY LINE — — — LIMITS OF WASTE STREAM BUFFER •'^^^^'^+ 7REELINE EXISTING ROAD FENCE -----,------ LFG COLLECTION PIPING ......... LFG CUT-OFF TRENCH Mw•8 COMPLIANCE MONITORING WELL s mw-1 NON COMPLIANCE MONITORING WELLS . MP-6 COMPLIANCE METHANE MONITORING WELLS A MP8 ASSESSMENT METHANE MONITORING WELLS ❑ BRA SURFACE WATER MONITORING POINT Q EVV-29 LFG EXTRACTION WELL CONVERTED TO PASSIVE VENTING NOTES 1. TOPOGRAPHIC CONTOUR INTERVAL = 2 FEET 2. COORDINATE SYSTEM IS N.C. STATE PLANE GRID. 3. TOPOGRAPHIC DIVIDING LINE DIVIDES THE SASE MAP TOPOGRAPHIC CONTOURS FROM LANDSAT TOPOGRAPHIC CONTOURS. LANDSATTOPOGRAPHICCONTOLRSHAVCASCONTOUR INTERVAL. 4. RECORDS WERE UNABLE TO BE LDCATED FOR LFG EXTRACTION WELLS EW-XI THROUGH EW-Xi AND WERE GIVEN IDENTIFICATION NAMES UNTIL SUCH TIME THAT RECORDS ARE FOUND. 5. LOCATION OF CCMFLIANCE METHANE MONITORING WELL MP-4 ISAPPROXIMATE. REFERENCE I. BASE MAP PROVIOEO BY CAMP DRESSER & MCKEE FROM PREVIOUS wATER QUALITY MONITORING REPORTS. 2. WELLS MP-?, MPS, AND MP-R WERE SURVEYED BY REGIONAL LAND SURVEYING. INC. ON JUNE 1 T. 2C T5. L SITELOCATIONAP N TO S D 150 300 SCALE FEET PRCJECT HENDERSON COUNTY HENDERSON COUNTY CLOSED MSVV AND C&D LANDFILL ��CLIENT ��::::::PERMIT#45-01 �_ONSULTANTPG C-399 YYYY-MM•DD 2G16.09.12 717— _ METHANE MONITORING LOCATION MAP �v PREPARED MAK s G a L D E R DESIGN DYR REVIEW DYR PROJECT No. DRAVUk- GOLDER ASSOCIATES NC, INC. APPROVED RPK 08396506 1