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by �w�►��!�. <br /> �•� 114 <br /> Scott T Hooton , BP Irl Company <br /> Portfolio Manager ` I _ Midwest Environmental Services <br /> l f} 295 SW 41"Street <br /> Bldg 13 Suite N <br /> Renton WA 98055 <br /> Switchboard 425/251-0667 <br /> Central Fax 425/251-0736 <br /> December 22, 2000 <br /> Mr Michael Infurna <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> PO Box 388 <br /> Stockton, CA 95201-0388 <br /> I <br /> RE BP Oil Site No 11192 <br /> 1403 Country Club Blvd <br /> Direct 425/251 0689 Stockton, CA 95204 <br /> Cell 206/919 5029 <br /> hootonst@bp com Dear Mr Infurna <br /> www by com <br /> This letter transmits the Fourth Quarter 2000 Groundwater Monitoring report prepared on behalf of <br /> BP by Blaine Tech Services <br /> The enclosed report summarizes chemical data and groundwater elevation measurements collected <br /> from seven wells, beginning during May, 1990 Upon review of the results, you will note that <br /> aromatic petroleum hydrocarbons were detected in samples obtained from all five of the wells sampled <br /> on 26 October 2000 <br /> MTBE was also detected in samples obtained from all of the wells sampled on 26 October 2000 <br /> Concentration data and water elevation measurements for the three wells with the highest MTBE <br /> concentrations associated with the third quarter 2000 are depicted below <br /> MW-3 TPH9, MTBE&Water Elevation <br /> 140000 0 <br /> 120000 <br /> -5 <br /> 100000 <br /> 80000 -10 ® TPHg <br /> rn N MTBE <br /> 60000 -15 Water Elevation <br /> 40000 8194 Tosco <br /> • <br /> -2U urchases site <br /> 20000 , <br /> 0 -25 <br /> rn rn rn M M M rn rn _rn o <br /> _ — r ` N <br /> M Ln Ln N N N N <br />