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Scott T Hooton <br /> Team leader <br /> 'BPAme <br /> } BP Amoco Oil Corporation <br /> t a_tr (_ 1 3 295 SW 41-Street <br /> r Bldg 13 Suite N <br /> `� 4251251 0689 <br /> Renton WA 98055 <br /> U S Z 9 P i l 1. 3 5 425/251 0736 FAX <br /> August 24,2000 <br /> San Joaquin County Public Health Services <br /> Attention Mr Harlin Knoll-Environmental Health Division <br /> P O Box 2009 <br /> Stockton, CA 95201 <br /> RE Former BP Oil Site No 11194 <br /> 2375 Tracy Bouevard <br /> Tracy, CA <br /> Dear Mr Knoll <br /> This letter transmits the 21 August 2000 Groundwater Monitoring and Sampling Report prepared on behalf <br /> of BP by Blaine Tech Services The report includes chemical data associated with groundwater samples <br /> obtained on 22 July 2000 <br /> Variable concentrations of MTBE were detected in samples obtained on 22 July 2000,with the highest <br /> concentration reported in samples obtained from well MW-2 Water elevation,MTBE and TPHg <br /> concentration data associated with well MW-2 is shown below <br /> MW-2 TPHg, MTBE &Water Elevation <br /> 100000 25 <br /> 90000 <br /> 80000 20 <br /> 70000 <br /> 60000 15 - - It - -TPH-g <br /> `ai 50000 ai 9 MTBE <br /> 40000 8/94 Tosco Purchase 10 <br /> ♦Water Elevation <br /> 30000 <br /> 20000 5 <br /> 10000 <br /> 0 111111111 0 <br /> r+ co O O N M v v (D M W O <br /> OD co M O O7 (n M O cn M Df M O <br /> O2 m DS Of d) O1 D7 d! D1 D7 W Q1 O <br /> N <br /> OO_ O �L] f� N <br /> The presence of 0 03 feet of liquid petroleum hydrocarbon in well MW-3 was an issue of concern raised in a <br /> 10 January 1997 letter from San Joaquin County Public Health Services Note that liquid petroleum <br /> Hydrocarbon was not encountered in well MW-3 when sampled on 22 July 2000 The aromatic hydrocarbon <br /> and TPH-G concentrations detected in well MW-3 indicate that the liquid petroleum hydrocarbons have been <br /> abated I understand that well MW-3 is located east-northeast of the underground storage tanks <br />