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�• +u.., iY.s/Y rAA zuPgalufjo 5 �Otll <br /> r BP OIL <br /> Post-W Fax Note 7671 ti"" i.., gag," <br /> To Fie ,- &" <br /> CO-IDLpl. Go. <br /> August 6. 1997 phone a phot•a <br /> Fax M /� to hAx 0 -.. <br /> San Joaquin County Public Health Services V <br /> Attention Mr. Steve Sasson <br /> 304 East Weber Avenue,Third Floor <br /> Stockton,CA 95202 <br /> RE: BP Branded Site h16 3,.1.193 _._:.......:,- <br /> 3202 West Hammer Lane <br /> Stockton,CA <br /> Dear Mr. Sasson: <br /> This letter transmits a 15 July 1997 Groundwater Monitoring and Sampling Report prepared on behalf of BP <br /> by Alisto Engineering Group. Recall that this investigation was not prompted by knowiedgc':of any releases <br /> froth this facility. Rather,the work was <br /> performed to obtain chemical data in support of $P;s planned <br /> divestment ol'retail properties acquired from Mobil during 1999.The data shows that variabic concentrations I <br /> of petroleum hydrocarbons were detected in off-site and on-site groundwater monitoring wells. Consistent { <br /> i <br /> with prior monitoring data,the highest concentrations were detected in samples obtained from'well MW-2, <br /> located immediately north of the underground storage tanks. <br /> In a letter dated 7 February 1997,the San Joaquin County Public Health Services,Environmental Health <br /> Division raised the concern that"new product may be reaching the groundwater'and that the"data does not <br /> indicate that this is a stable or declining plume." the county further suggested that 13P submit a workplan to <br /> evaluate alternatives for active remediation based on these data. I understand that spill containers must he <br /> installed around the:till pipes before the USTs at this site can meet 1998 Irak prcvcntian requirements. I'he <br /> absence of spill containment devices most likely explains the variable concentration data associated with the <br /> wells in the immediate vicinity of the USTs. It seems appropriate to focus attention ori the upgrades necessary <br /> to prevent further releases rather than addressing the consequences of any ongoing releases with a <br /> soil/groundwater remediation system. <br /> Please give:me a tail at(425)251-0689 ifyou have any questions or-comments. <br /> Sincerely, <br /> :"Scott Hooton <br /> Environmental Remediation Management <br /> attachment <br /> cc: site rile <br /> Tosco Marketing Company,Attention Mr.D.J.Camille,2000 Crow Canyon Place,Suite 400,San <br /> Ramon,CA 94583(w/attachment). <br /> • E <br /> r <br />