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r5 }' <br /> SECOR <br /> July 3, 2002 International Incorporated <br /> Project 77BP 64409 010034 C2 <br /> Mr Mike Infurna <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue,Third Floor <br /> Stockton, California 95202 <br /> Re Quarterly Summary Report—Second Quarter 2002 <br /> Dear Mr Infurna <br /> On behalf of Tosco Corporation, a subsidiary of Phillips Petroleum Company, SECOR <br /> International Incorporated is forwarding the quarterly summary report for the following <br /> location <br /> Service Station Location <br /> Former Tosco (Unocal) Station#4409 1502 N El Dorado Street, Stockton, CA <br /> The summary report includes a shallow and deep zone groundwater contour map <br /> (Figures 1 and 2) A groundwater chemical concentration map composed by Gettler- <br /> Ryan Inc (GRI), is included in GRI's groundwater monitoring report (Attachment A) <br /> If you have questions or comments regarding this quarterly summary report, please do <br /> not hesitate to contact me at (916) 861-0400 <br /> Sincerely, <br /> SECOR International Incorporated I? LESS%yq <br /> BE <br /> LP <br /> No C 058399-31 <br /> � <br /> Rusty E Benko , P E * Exp1LaZ <br /> Senior Engineer OAF 4 CMS QIP <br /> OF CA4��� <br /> Enclosure Quarterly Summary Report—Second Quarter 2002 <br /> Attachments Figure 1 —Shallow Zone Groundwater Elevation Contour Map <br /> Figure 2—Deep Zone Groundwater Elevation Contour Map <br /> Attachment A— GRI's, Second Quarter Event ofApnl 18, 2002 <br /> Groundwater Monitoring & Sampling Report, Dated <br /> May 31, 2002 <br /> cc Mr Ed Ralston, Phillips 66 Company <br /> - Mr Marty Hartzell, RWQCB —Central Valley Region <br /> 3017 Kilgore Road, Suite 100, Rancho Cordova, CA 95670 916 861 0400 916 861 0430 Fax wu w secor com <br />