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FROM �. 1997.E x,14 17:42 7R888 P.02/24 <br /> C, ✓! <br /> PACIFIC <br /> may, ENVIRONMENTAL. <br /> GROUP INC_ <br /> February 14, 1997 <br /> Project 320-133.713 <br /> Ms. Mary Meays <br /> San Joaquin County Environmental Health Division ` <br /> Site Mitigation Unit . k <br /> P.O. Box 388 <br /> Stockton, California 95201-0388;; <br /> Re: Revised Request for Site Closure <br /> Former Chevron Service Station 9-1918 <br /> 45 East Harding Way at El Dorado Avenue <br /> Stockton, California <br /> Dear Ms. Meays: <br /> This letter, prepared by Pacific Environmental Group, Inc. (PACIFIC) on behalf of <br /> Chevron Products Company(Chevron), discusses the site history including site assess- <br /> ment, remediation, and monitoring activities, presents current conditions and provides <br /> rationale for site closure. The initial Request for Closure (PACIFIC, September IS, <br /> 1996)was revised based on the letter to Chevron from the San Joaquin County <br /> Environmental Health Division(SJCEHD)dated September 26, 1996. In a subsequent <br /> letter to Chevron,the SJCEHD presented further comments regarding the Revised <br /> _ Request for Site Closure dated November 12, 1996 and requested a work plan to install <br /> l additional groundwater monitoring wells to evaluate groundwater quality trends. This <br /> letter discusses the SJCEHD comments, presents further revisions to correct deficiencies <br /> commented upon,provides rationale for alleviating the need for the installation of further <br /> monitoring wells, and maintains that the site be evaluated for closure at the next <br /> technical review committee meeting. <br /> Included is the rationale for closure, an estimate of residual petroleum hydrocarbons in <br /> soil and groundwater, and an evaluation of the effect of the residual petroleum <br /> hydrocarbons on water 4uality, health, or other beneficial uses. This letter was prepared <br /> in accordance with the closure documentation requirements outlined in Tri-Regional <br /> Board Staff Recommendations AppendixB-Requestsfor&te Closure(Central Valley <br /> Regional Water Quality Control Board [RWQCB], March 1, 1994)- <br /> 2025 Gateway Place,Suite 440,San Jose,California 95110 t408)441-7500 FAX(408)441-7539 <br /> i <br />