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unramar _ <br /> Telecopy: 209-585-5685 Credit <br /> Ultramar,Inc. <br /> P.O.Box 209-583-3330 Administrative <br /> 525 W.Third Street 209-583-3302 Information Services <br /> Hanford,CA 93232-0466 209-583-3358 Accounting <br /> (209)582-0241 <br /> :ii:i.............. <br /> ......• ...3` E E ii E.'•'' " i <br /> �I <br /> QN ;;:•::::..:::::::::;:;:::. <br /> IVED <br /> RECE <br /> JUN 17 05 <br /> DATE REPORT SUBMITTED: June 13, 1996 ENVIRONMENTAL HEALTH <br /> QUARTER ENDING: March 31, 1995 PERMIT/SERVICES <br /> SERVICE STATION NO.: 474 <br /> ADDRESS: 3440 East Main Avenue, Stockton CA <br /> COUNTY: San Joaquin <br /> ULTRAMAR CONTACT: Randall K. Stephenson TEL. NO: 209-583-3324 <br /> BACKGROUND: <br /> In March, 1991, a limited soil investigation was conducted at the site as part of a divestment <br /> project. Analytical results of selected soil samples collected from borings drilled during the <br /> investigation indicated the presence of trace levels of gasoline hydrocarbons beneath the site. <br /> Removal of the three existing UST's was performed in September 16, 1993. Analytical results <br /> of soil samples collected from the tank basin and the fuel islands indicated the presence of trace <br /> levels of gasoline range hydrocarbons in these areas. The tank basin was over-excavated to a <br /> depth of 30 feet in an effort to remove the impacted soil. The highest benzene in the samples <br /> collected from 30 feet was 0.12ppm with no detection of TPHg. <br /> Based on the analytical results from the drilling and the UST removal, San Joaquin Co. <br /> Environmental Health required that Ultramar install three ground-water monitoring wells at the <br /> site to assess ground-water conditions beneath the site. These wells were installed in December, <br /> 1993. Analytical results of water samples collected from the wells indicate that ground water <br /> beneath the site is impacted with gasoline hydrocarbons. Quarterly monitoring of the wells was <br /> initiated in the first quarter of 1994. <br /> SUMMARY OF THIS QUARTER'S ACTIVITIES: <br /> Ground-water sampling of all the wells was conducted by Doulos Environmental, on March 28, <br /> 1996. <br /> BEACON <br /> A Member of the Ultramar Group of Companies #1 Quality and Service <br />