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In correspondence dated September 18, 2020, the RWQCB approved the September 4, 2020 Workplan for Additional Off-site Groundwater Delineation and Monitoring Well Installation. Due to delays in obtaining encroachment permits, field work was performed in April 2021. In April 2021, groundwater monitoring wells MW11 through MW13 were installed in a deeper water bearing zone to evaluate groundwater quality at approximately 55 to 60 feet below the potentiometric surface, downgradient of the source area. Wells MW11 and MW12 were installed off site to the east and northeast, respectively, and MW13 was installed on site. The highest concentrations of petroleum hydrocarbons were reported in the groundwater sample collected from MW12. Low petroleum hydrocarbon concentrations were reported in the samples collected from MW11 and MW13. The laboratory analytical results and groundwater elevations associated with these wells suggest the former USTs associated with the site are not the source of deep zone petroleum hydrocarbon impact to groundwater northeast of the site. ATC recommended one additional groundwater monitoring event in the third quarter 2021 and if groundwater flow and concentrations remained unchanged then no further action was recommended. In September 2022, one CPT boring along with two companion hydropunch borings were advanced off site, along the south side of East Park Street, to evaluate the potential presence of dissolved petroleum hydrocarbons off site to the northeast of the source area.Two temporary soil vapor points were installed beneath the southeastern portion of the footprint of the former building that was located in the western portion of the site to evaluate the potential presence of petroleum hydrocarbon vapors. Based on the results of the investigation, Atlas recommended no further groundwater or soil assessment and to proceed with site closure activities. Pertinent site features are shown on the Site Plan (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 to the commencement of fieldwork. The Site-Specific HASP will be reviewed and signed by all field staff and contractors before beginning field operations at the site. Planning and Permitting Atlas will obtain a well permit from SJCEHD prior to initiating the fieldwork. Additionally,for off-site wells, City of Stockton Encroachment Permits will be secured. Grouting activities will be performed under the direction and/or supervision of an appointed representative of the SJCEHD. Underground Utility Locating and Clearance In advance of field activities, Atlas will mark the locations of the existing wells in accordance with the Underground Service Alert (USA) guidelines, and notify USA of upcoming subsurface activities. Atlas will