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Mr. Robert D. Mihalovich 0 - 2 - 3 August 2000 <br /> Thompson Chevrolet, Patterson, Stanislaus County <br /> Chevron proposes to install a boring north of MW 3, west of MW 6, east of MW 1, and southeast of <br /> MW 1 in response to my 14 March request to define the lateral extent of TPHd pollution in these areas. <br /> Chevron proposes to install the boring north of MW 3 at least 230 feet north of MW 3 and outside the <br /> footprint of TPH-affected soil. This location seems too far. Another boring should be placed midway <br /> between MW 3 and the proposed location. The boring east of MW 1 should be moved approximately <br /> 80 feet to the northwest,just outside the TPH-affected soil footprint. The proposed location is too far <br /> from the TPH-affected soil footprint and would likely show nondetectable levels. The work plan is <br /> approved provided that the above comments are incorporated into the work plan. Staff may request <br /> Chevron to install permanent MWs to confirm results from this investigation. <br /> Schedule <br /> The work plans state that depending on the availability of contractors, the fieldwork would be scheduled <br /> within two weeks of staff approval and execution of a right of entry agreements between Chevron and <br /> property owners. Based on this schedule,by 18 August 2000,please submit a schedule for <br /> implementation of the work plans. If you have any questions, you may call me at(916) 255-3081 or <br /> e-mail at isorenp@rb5s.swrcb.ca.gov. <br /> PHILIPS. ISORENA�� <br /> Associate Engineer <br /> cc: Ms. Margaret Lagorio, San Joaquin County Public Health Services, Stockton <br /> Mr. James Simpson, Stanislaus County Department of Environmental Resources,Modesto <br /> Ms. Penny Fottrell, Chevron Environmental Management Company, San Ramon <br />