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' 1 INTRODUCTION <br /> This Soil Gas Sampling Workplan is an appendix to the Removal Action Workplan (RAW) that was <br /> ' prepared to remedial activities for the property located at 2711 Navy Drive, Stockton, California <br /> (the Site, see Figure 1). The Site will be excavated to a depth of approximately 2-3 feet below <br /> ground surface (ft bgs) to remove the soil impacted by total petroleum hydrocarbons (TPH), <br /> volatile organic compounds (VOCs), polynuclear aromatic hydrocarbons (PNAs), <br /> polychlorinated biphenyls (PCBs), and metals. In addition, groundwater samples will also be <br /> collected from the Site. Site activities will be conducted under the supervision of the <br /> Department of Toxic Substances Control (DTSC) and in accordance with the Voluntary Cleanup <br /> Agreement (VCA) between the DTSC and The Learner Company. Additionally, the Port of <br /> ' Stockton will be overseeing site activities as the landowner. <br /> This Soil Gas Sampling Workplan has been prepared in accordance with the DTSC draft <br /> ' document entitled Advisory-Active Soil Gas Investigations, dated March 2010. <br /> The goal of this sampling event is to determine the concentrations of vapor phase VOCs in the <br /> ' shallow soil at the Site. The data gathered during this sampling event will be used to represent <br /> the conditions for potential on-Site industrial workers. Based on the results of this evaluation, <br /> appropriate mitigation measures will be developed, if necessary. The following text provides a <br /> ' brief description of the Site, previous investigations, the procedures to be followed during the soil <br /> gas sampling event, and the evaluation of the resulting data. <br /> ' � M/LLEB BBOO/(5 <br />