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l ' <br /> Attachment 1 <br /> Geosynteccl' 1111 n,Calif y,is Floor <br /> Oakland,Galifo 0.8 6.3 04 PH 510.836.3034 <br /> Consultants FAX 510.836 3036.coin <br /> 1 www.geosyntec.coin <br /> 16 March 2011 <br /> Mr. Mike Itifurna <br /> San Joaquin County Environmental Health Department <br /> 600 East Main Street <br /> Stockton, California 9.5202 <br /> Subject: Site Investigation Report <br /> 800 West Church Street <br /> Stockton, California <br /> Dear Mr. Infurna: <br /> On 2-4 February 2011, Geosyntec .Consultants (Geosyntec) performed field activities in <br /> accordance with the Site Investigation Plan submitted to the San Joaquin County Environmental <br /> 1 Health Department (SJCEHD) on 31 January 2011 `and , approved as SJCEHD permit <br /> #SR061862/061882. Six locations were sampled for groundwater and five locations were <br /> sampled for soil gas at the former Newark Sierra facility located at 800 West Church Street in <br /> Stockton, California (the "Site"). Soil samples were also collected at three of the six locations. <br /> Sample locations are shown on Figure 1. Field procedures as described below were performed <br /> in accordance with all applicable San Joaquin County Ordinance Codes and/or Standards and <br /> State and/or Federal Laws and Regulations. The Site is a former paper products facility, <br /> currently unoccupied. The purpose of the investigation.described below was to evaluate the <br /> presence of chemicals in soil gas, groundwater,and soil in the context of litigation. <br /> FIELD INVESTIGATION <br /> Pre-Sampling Activities <br /> 0 Prior to sampling, a project Health and Safety Plan was prepared in accordance with California <br /> OSHA requirements. The sample locations were marked on the ground with white paint and <br /> Underground Service. Alert (USA) North was notified on 23 January 2011 (ticket number <br /> 0 029014). In addition; Subtronic Corporation of Martinez, California performed a'geophysical <br /> survey in .the vicinity of each sample location to identify the potential presence of utilities, <br /> pipelines,or other subsurface features.,No utilities were damaged during field activities. <br /> InvestigationResults_san Joaquin County-3.16.11 <br />