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' ❑E1W GROUN DWATER <br /> ❑❑❑ TECHNOLOGY, INC. 1401 Halyard Drive,Suite140,West Sacramento,CA 95691,(916)3724700 <br /> FAX(916)372-8781 <br /> January 3, 1995 <br /> Ms. Mary Ways <br /> San Joaquin County Public Health Services N 195 <br /> Environmental Health Division <br /> 445 San Joaquin Street ENVIRONMENTAL HEALTH <br /> P. O. Box 388 PERMIT/SERVICES <br /> Stockton, California 95201-0388 <br /> Subject: Request for Site Closure <br /> Chevron Service Station No. 9-7780 <br /> 3246 East Fremont Street <br /> Stockton, California <br /> GTI Project 02070 0072 <br /> Dear Ms. Meays: <br /> Groundwater Technology, Inc. submits this letter as a request for site closure for the former Chevron <br /> service station located at 3246 East Fremont Street in Stockton, California (Attachment 1, Figure 1). <br /> Based on the data provided herein, no further action is required at this time with regard to <br /> environmental activities at the site. The text and attachments within this letter are assembled to <br /> correspond with the guidance provided in Appendix A and its Addendum of the Tri-Regional Board <br /> Staff Recommendations For Preliminary Evaluation and Investigation of Underground Storage <br /> Tanks (CRWQCB-NCR, SFB, CVR, 1990). Data provided in this document clearly indicates that <br /> hydrocarbon-impacted soil left in place at the site is not a threat to current and potential beneficial <br /> uses to groundwater. In addition, analytical results of groundwater samples collected since 1988 <br /> show no impact to first encountered groundwater beneath the site. <br /> SITE HISTORY <br /> According to Chevron records, the Chevron service station was constructed in July 1960 and <br /> operated four underground storage tanks (USTs). The USTs included one 6,000-gallon regular <br /> leaded, one 5,000-gallon unleaded, and one 2,000-gallon supreme leaded gasoline tanks, and one <br /> 550-gallon waste-oil steel tank. In January 1987, the service station was demolished and the USTs <br /> were removed from the subsurface. Methods and results of UST removal and UST pit sampling are <br /> documented in the Tank Removal Sampling Report (Blaine Tech Services, 1987). <br /> 0072clos.rpt <br /> Offices throughout the U.S.,Canada and Overseas <br />