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by ONEDXZ%I 11;W,WW <br /> •��•�•• <br /> SEP 7 2001 u �f�����: <br /> Scott T.Hooton cn`v�pf1�����BP�N14Apany ON <br /> Portfolio Manager [iV Cj pjmjq/cC4Ok5-' eft Environmental Services <br /> P�fr �7Lf}295 SW 41`t Street <br /> Bldg. 13,Suite N <br /> Renton,WA 98055 <br />_ Switchboard:425/251-0667 <br /> Central Fax:425/251-0736 I <br /> August 22, 2001 <br /> Mr. Harlin Knoll <br /> San Joaquin County Public Health Services <br /> 304 East Weber Avenue, Third Floor i <br /> Stockton, CA 95202 <br /> Re: Former BP Oil Site No. 11194 i <br /> 2375 North Tracy Boulevard <br /> Tracy, CA <br /> Direct:425/251-0689 <br /> Cell;2061335-0689 Dear Mr.Knoll: <br /> hootonst®bp.com <br /> www.bp.com <br /> This letter transmits the 19 July 2001 Second Quarter 2001 Groundwater Monitoring report prepared by <br /> Blaine Tech Services on behalf of BP. The report summarizes monitoring data obtained since 1986,including <br /> results associated with samples recently collected on 12 April and 23 May 2001. This report includes figures <br /> showing water elevation and chemical data associated with the former BP site,former Chevron,and Scotty's. <br /> Aromatic petroleum hydrocarbons are associated with five of the monitoring wells sampled on 12 April and <br /> 23 May 2001 which are associated with the former BP site. The highest benzene concentration is associated <br /> with a sample obtained from well MW-4(13.5µg/l). The highest MTBE concentrations associated with the <br /> former BP site was detected in a sample obtained from well MW-2,located adjacent to the underground <br /> storage tanks. Water elevation,TPHg and MTBE concentration data is shown below. ' <br /> MW-2 TPHg, MTBE & Water Elevation <br /> I <br /> 100000 25 <br /> 90000 - <br /> 80000 - 20 <br /> 70000 <br /> 60000 15 J ■ TPHg <br /> `ts1 50000 U) MTBE <br /> ' 40000 - 10 —♦—Water Elevation <br /> 30000 - s <br /> 20000 - -- 5 <br /> 10000 - <br /> 0 - 1- 0 <br /> �� 40 CP 00 0� Op'00 OR 0 00 �O O�61 O"1 <br /> aJ �°J �� r�oj r�JJ �q �°b r�(:b '0J '0 �0) ,`OJ rL0 �O <br /> ti <br /> I <br /> 4 <br />