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Jamar Service Station <br /> Workplan for Add7 Off-Site Assessment Activities <br /> November 11,2019 <br /> WORKPLAN FOR ADDITIONAL OFF-SITE <br /> ASSESSMENT ACTIVITIES <br /> 1.0 SITE BACKGROUND <br /> On behalf of Mcllrath Family LTD, PTP, ATC has prepared this workplan for the Jamar Service <br /> Station located at 4075 East Main Street in Stockton, California (Figures 1 and 2). In <br /> correspondence dated September 12, 2019, the Regional Water Quality Control Board <br /> (RWQCB) requested additional site assessment activities to confirm results of a regression <br /> analysis included in a request for site closure. The Bioscreen modeling results are presented in <br /> ATC's No Further Action Request (Revised) and First Semiannual Monitoring Report 2019, <br /> dated November 9, 2019. <br /> 2.0 SITE LOCATION <br /> The site is located on the northwest corner of East Main Street and South Oro Avenue in <br /> Stockton, California, as shown on Figure 2. The site is currently occupied by the Jamar Service <br /> Station and located in a commercial and residential area. <br /> 3.0 PROPOSED SCOPE OF WORK <br /> ATC recommends the advancement of three soil borings for characterizing direct contact risk <br /> and metals content at the site. ATC will also install five groundwater monitoring wells to <br /> evaluate the lateral and vertical extent of petroleum hydrocarbons in groundwater. The tasks <br /> required to perform the proposed scope of work are presented below. <br /> 3.1 ADVANCEMENT OF SOIL BORING <br /> • Site Safety Plan. As required by the Occupational Safety and Health Administration <br /> (OSHA) Standard "Hazardous Waste Operations and Emergency Response" <br /> guidelines (29 CFR 1910.120), and by the California OSHA (Cal-OSHA) "Hazardous <br /> Waste Operations and Emergency Response" guidelines (CCR Title 8, Section 5192), <br /> a Health and Safety Plan (HASP) will be prepared. The HASP will be reviewed by the <br /> field staff and contractors before beginning field operations at the site for all tasks <br /> described in this workplan. <br /> • Permitting. Permits for the proposed soil borings and monitoring wells will be <br /> obtained from the San Joaquin County Environmental Health Department (SJCEHD). <br /> In addition, encroachment permits with the city of Stockton and/or access agreements <br /> with private property owners will be required for the off-site drilling locations. <br /> 1 <br />