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PACI FIC% ' <br /> ENVIRONMENTAL <br /> GROUP INC. I <br /> 92 J' ? PH 2: 28 <br /> July 13, 1993 <br /> Project 310-01.05 <br /> MEMORANDUM <br /> To: Ms. Mary Meays, San Joaquin County Public Health Services - <br /> Environmental Health Division (SJCPHS/EHD) <br /> From: Mr. Brian Frus, Pacific Environmental Group, Inc. (PACIFIC <br /> Subject: Interim Remediation Design <br /> Unocal Bulk Plant 0788 <br /> 8203 East 11th Street <br /> Tracy, California <br /> On behalf of Unocal Corporation(Unocal), PACIFIC has prepared this work plan <br /> for implementing a remedial system at the site referenced above (Figure 1). A <br /> work plan was requested by the SJCPHS/EHD in a letter dated May 25, 1993. <br /> Interim remedial action was proposed for Unocal Bulk Terminal 0788 in a Reme- <br /> dial Action Plan (RAP)prepared by PACIFIC dated March 18, 1993. Petroleum <br /> hydrocarbon mass reduction was identified as the primary response action associ- <br /> ated with soil-based and groundwater-based remedial objectives. The primary <br /> response action was formulated into interim remedial alternatives by considering <br /> various remedial technologies. Of these alternatives, soil vapor extraction(SVE) <br /> was selected. This memo identifies the primary impact area and estimated influ- <br /> ence area of the remedial system, provides an update on remedial activities, and <br /> transmits construction drawings for the remedial system. <br /> 2025 Gateway Place, Suite 440, San Jose,California 95110 (408)441-7500 FAX(408)441-7539 <br /> 620 Contra Costa Blvd.,Suite 209, Pleasant Hill,California 94523 (510)825-0855 FAX(510)825-0882 <br />