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2.0 TANK REMOVAL FIELD ACTIVITIES 2.1 Tank Removal Prior to removal of the tanks, 3,086 gallons of diesel fuel were removed from the ASTs by Henner Tanklines, Inc. on January 15, 2021. The diesel fuel is being used by Vaca Valley Excavating and Trucking for its intended purpose as a fuel. On February 22, 2021, the interiors of each of the two 5,000-gallon Diesel ASTs were triple-rinsed by Environmental Logistics, Inc. personnel through the fill ports of the tanks using a fresh water/detergent mixture and a hot water pressure washer to remove any residual diesel fuel and attempt to inert the atmosphere of the tank.The 300 gallons of rinsate was removed with a vacuum truck and the interior of the tanks were then inspected to ensure all sludge and liquids had been removed. The rinsate with residual diesel fuel was transported for disposal under manifest number 021980969JJK to Hazmat TSDF, Inc. in Bloomington, California. A copy of the hazardous waste disposal manifest for the rinsate is included in Appendix B. Photographic documentation of the tank removal activities is included in Appendix C. On February 23, 2021, Hudspeth & Associates, Inc (Hudspeth) removed all aboveground piping attached to both ASTs and placed the piping into a 20-yard roll-off bin supplied by Environmental Logistics, Inc.for disposal off site.The piping was transported for disposal under manifest number 022071064JJK to Hazmat TSDF, Inc. in Bloomington, California. A copy of the hazardous waste disposal manifest for the piping is included in Appendix D. Following removal of aboveground piping, Hudspeth sawcut the piping trench, which contained approximately 20 feet of underground fuel piping that connected the ASTs to two adjacent fuel dispensers,and removed the piping trench concrete.The concrete was placed on a Hudspeth truck for disposal off site. Residual fuel and absorbent generated from the underground piping removal activities were placed into a 55-gallon drum supplied by Environmental Logistics, Inc.for disposal off site. The drum was transported for disposal under manifest number 022071063JJK to Hazmat TSDF, Inc. in Bloomington, California. A copy of the hazardous waste disposal manifest for the drum is included in Appendix D. On February 24, 2021, Environmental Logistics, Inc. added approximately 200 pounds of dry ice to the interior of each AST to further inert their atmosphere. Prior to tank removal, the lower explosion limit (LEL) and percent oxygen were measured to be 0%LEL and 20.9 Vol%Oxygen and within acceptable levels for transport of each AST. Upon permission from the Certified Unified Program Agencies(CUPA)inspector, the ASTs were removed from the concrete berm containment with a crane by Hudspeth and then inspected for signs of deterioration, holes, or leakage. No signs of deterioration, holes, or leakage were present in the tanks. Following removal,the ASTs were loaded onto trucks and transported by Environmental Logistics, Inc. to Alco Iron & Metal in San Leandro, California, for disposal under a bill of lading. A copy of the bill of lading is included in Appendix E. LOWE'S TRACY CA DC LOWE'S TRACY CA DC AST SYSTEM REMOVAL REPORT.DOCX 2-1 PROJECT NUMBER 723019111