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Section 1 <br /> 1 Introduction <br /> 1 <br /> On behalf of the State of California, Division of the State Architect (DSA), Tetra Tech, Inc has <br />' completed a Phase II subsurface site Investigation at the Tank #3 site at Stockton Developmental <br /> Center, located at 510 East Magnolia in Stockton, California The work was conducted in <br /> 1 response to compliance requirements established by the San Joaquin County, Public Health <br /> Services, Environmental Health Division (SJCPHS) and the State Water Resources Control <br />' Board (SWRCB) concerning Investigation of underground storage tanks <br /> 1 Based on the results of a previous soil boring program, petroleum hydrocarbons were detected in <br /> the soil around a bunker fuel underground storage tank (LIST) designated as Tank 43 This <br /> Investigation was implemented to assess the extent of petroleum-contaminated soil at the tank <br /> 1 site The investigation was conducted by drilling a series of soil borings around the UST in <br /> order to provide a basis for conducting any necessary remedial action Soil samples were <br /> collected and analyzed for total petroleum hydrocarbons by EPA M8015 The acquired data <br /> has been evaluated to provide a basis for conducting further action, such as additional assessment <br /> 1 or corrective action <br /> The following report provides a brief history of previously conducted work, a description of <br />' the field methodology for the site investigation, a presentation of the analytical results, and <br /> recommendations for remedial action Supporting documentation, such as soil boring logs and <br /> 1 laboratory results are presented in Appendices A through D <br /> 1 + <br /> TETRA TECH Stockton Developmental Center,Phase 11 Site Investigation Report Page 1 <br />