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INTERNATIONAL TECHNOLOGY CORPORATION <br /> 1.0 INTRODUCTION <br /> Thn purpose of this investigation was to evaluate the quality of soil and <br /> f- groundwater at BP Station No. 11192, located at 1403 Country Club Boulevard in <br /> Stockton, California. <br /> This Site Assessment Report describes the methodology, results, and <br /> interpretations of the implementation-of the IT Corporation PRELIMINARY <br /> HYDROGEOLOGIC ASSESSMENT. This work was performed for SP Oil Company under <br /> the supervision of California Registered Geologist Dennis P. Dunn. <br /> 2.0 SCOPE OF WORK I <br /> The scope of work of this investigation included the following work elements: <br /> • Drilling of four boreholes and the subsequent installation of ' <br /> a monitoring wells. <br /> Collection and analysis of one soil, sample from each boring. <br /> si Collection and analysis of water samples from each well. <br /> y <br /> j _ <br /> Surveying all wells to a common datum. <br /> 3.0 FIELD INVESTIGATION <br /> All field investigative methods conformed to those delineated in the IT <br /> Corporation PRELIMINARY HYDROGEOLOGIC ASSESSMENT. IT Corporation obtained the <br /> lead agency's (San Joaquin Public Health Services Environmental Health <br /> Division) approval of the work plan (Preliminary Hydrological Assessment) and <br /> obtained the San Joaquin County Special Well Permit No. 90-957 on 23 April <br /> 1990. Since three of the wells were less than fifty feet from a sanitary <br /> " sewer, special permits had to be issued requiring the groundwater from these <br /> 5 three wells to also be sampled for fecal coliform. Prior to drilling, well <br /> r and boring locations were marked in white paint. Underground Services Alert <br /> - - -(USA) was notified on 26 April 1990. All permits referred to in this - -- -----_-- --------- — <br /> paragraph are included in Appendix A. <br /> s � 1 <br /> y;:ENG:7024/072390 <br />