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Home My WebLink AboutDERR-2024-004264 ________________________________________________________________________________________________________________________ Well Decommissioning Report Page 1 ATLAS 358 South 700 East, B518 Salt Lake City, Utah 84102 www.oneatlas.com Office: 801-935-4917 February 16, 2024 Mr. Kevin Beery Utah Department of Environmental Quality Division of Environmental Response and Remediation 195 North 1950 West Salt Lake City, Utah 84114-4840 SUBJECT: Monitoring Well Abandonment Report Montana Brands Produce 1507 North Beck Street Salt Lake City, Utah 84116 Facility ID 4001519 LUST ID MSX Work Assignment MSX-08 Dear Mr. Beery: On February 2, 2024, the groundwater monitoring wells at the above referenced site were decommissioned. The decommissioning activities involved the proper abandonment of nine (MW -1, 2, 5, 6, 10, 11, 12, 13, and 14) two-inch diameter groundwater monitoring wells located at the site. Since the wells were over 30 feet deep, a state of Utah licensed well driller was required to decommission the wells. ConeTec, Inc. (ConeTec) performed the decommissioning activities with oversite from Atlas Technical Consultants (Atlas). A map showing the site layout and the decommissioned well locations is presented as Figure 1. The following activities were completed during the decommissioning. Well casings were backfilled to approximately 12 inches below grade using a grout mixture containing bentonite and cement. The well casings were broken off approximately 5-inches below grade. The flush mount sleeves remained in place and were sealed with concrete. The drilling subcontractor was responsible for disposal of all materials excavated and removed during decommissioning. There was such a small quantity that the materials were placed in th e on-site solid waste receptacle. Photographs 1 through 12 show the various stages of the decommissioning process and finished results. Well Decommissioning Report Page 2 ATLAS Our services consist of professional opinions and recommendations made in accordance with generally accepted geotechn ical and environmental engineering principles and practices. This warranty is in lieu of all other warranties either expressed or implied. Should you have any questions, please do not hesitate to contact us at (801) 935-4917. Sincerely, Atlas Technical Consultants LLC Olaf Questereit Jim Coletta, P.G. Senior Technician Branch Manager Utah Petroleum Storage Tank Consultant Cc: Mr. Chris Drakos, Montana Brands Produce Well Decommissioning Report ATLAS DECOMMISSIONING PHOTOGRAPHS Photo 1: Filling MW-11 with grout Photo 2: Gouting MW-2 Montana Brands Produce Well Abandonment –February 2024 Photo 4: Grouting MW-5 Photo 3: Grouting MW-1 Montana Brands Produce Well Abandonment –February 2024 Photo 6: MW-6 after completion Photo 5: View of MW-13 after grouting Montana Brands Produce Well Abandonment –February 2024 Photo 8: MW-10 after completion Photo 7: MW-5 after completion Montana Brands Produce Well Abandonment –February 2024 Photo 10: MW-2 after completion Photo 9: MW-14 after completion Montana Brands Produce Well Abandonment –February 2024 Photo 12: MW-11 after completion Photo 11: MW-1 after completion Montana Brands Produce Well Abandonment –February 2024