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through 7, 2015, Cardno ATC conducted the pilot test described in the workplan. The results of the sampling conducted during the well installation and the results of the pilot test were submitted in the Pilot Test Summary Report, dated August 4, 2015. On January 13, 2015, Cardno ATC supervised the installation of monitoring well MW-23 into the deep water bearing zone to 60 feet bgs. No hydrocarbons were detected in soil samples collected. The work was performed in accordance with Cardno ATC's Workplan for Additional Soil and Groundwater Assessment, dated August 12, 2014. On September 21 through 28, 2017, ATC supervised the installation of six air sparge wells (AS-2 through AS-7). The work was performed in accordance with ATC's Remedial Action Plan,dated June 14, 2017. The results of the soil sampling analysis were presented in ATC's Well Installation Report dated November 14, 2017. On October 3 and 4, 2017, ATC supervised the installation of two off-site groundwater monitoring wells (MW-24 and MW-25). The work was performed in accordance with ATC's Workplan for Additional Soil and Groundwater Assessment, dated May 8, 2017. The well installation activities and results of the soil sampling analysis were presented in ATC's Well Installation Report, dated November 14, 2017. On November 16,2020,ATC collected two grab surface water samples from Five Mile Creek in accordance with correspondence from the RWQCB dated August 18,2020. One sample was collected west-northwest of the former USTs and one sample was collected southwest of the former USTs. The surface water flow direction was not evident at the time of sampling but it is assumed that Five Mile Creek flows from north to south. Petroleum hydrocarbons were not detected in surface water samples collected from adjacent Five Mile Creek. On January 26, 2022 ATC Group Services LLC dba Atlas Technical submitted to the RWQCB the Semi- Annual Groundwater Monitoring and Remediation Status Report Fourth Quarter 2021 and Low Treat Closure Evaluation. This report concluded that the site generally meets the "Class 5" definition of the policy. On March 14, 2022, the RWQCB issued a request for public participation in anticipation of site closure. The public comment period yielded no comments. On July 15, 2022,the RWQCB sent a directive letter to begin well destruction activities as part of the case closure process and in accordance with San Joaquin County Environmental Health Department's well destruction requirements. Well construction details for all current and former site wells are summarized in Table 1 and well locations are shown on Figure 2. SCOPE OF WORK Well Destruction Activities Site Health and Safety Plan As required by the Occupational Safety and Health Administration (OSHA) Standard "Hazardous Waste Operation and Emergency Response"guidelines(29 CFR 1910.120), and by California Occupational Safety and Health Administration (Cal-OSHA) "Hazardous Waste Operations and Emergency Response" guidelines(CCR Title 8,Section 5192),Atlas will prepare a Site-Specific Health and Safety Plan (HASP) prior