ARCHIVED REPORTS_XR0002970 - Laserfiche WebLink

Home Browse Search

+ti BP OIL BP Oil Company ! l t Environmental Remediation Management 295 SW 41st Street L V' ry t Renton,Washington 98055-4931 L'f (425)251-0667 Fax No.(425)251-0736 April 7, 1998 San Joaquin County Public Health Services Attention Mr-Steve Sasson 304 East Weber Avenue,Third Floor Stockton,CA 95202 RE: BP Branded Site No. 11193 3202 West Hammer Lane Stockton,CA Dear Mr. Sasson: This letter transmits a 5 February 1998 Groundwater Monitoring and Sampling Report prepared on behalf of BP by Alisto Engineering Group. Recall that this investigation was not prompted by knowledge of any releases from this facility. Rather,the work was performed to obtain chemical data in support of BP's planned divestment of retail properties acquired from Mobil during 1989.The data shows that variable concentrations of petroleum hydrocarbons were detected in off-site and on-site groundwater monitoring wells. Consistent with prior monitoring data,the highest concentrations were detected in samples obtained from well MW-2, located immediately north of the underground storage tanks. In a letter dated 7 February 1997,the San Joaquin County Public Health Services,Environmental Health t Division raised the concern that"new product may be reaching the groundwater"and that the"data does not indicate that this is a stable or declining plume." The county further suggested that BP submit a workplan to evaluate alternatives for active remediation based on these data. I understand that spill containers must be installed around the fill pipes before the USTs at this site can meet 1998 leak prevention requirements. The absence of spill containment devices most likely explains the variable concentration data associated with the wells in the immediate vicinity of the USTs. It seems appropriate to focus attention on the upgrades necessary to prevent further releases rather than addressing the consequences of any ongoing releases with a soil/groundwater remediation system. Please give me a call at(425)251-0689 if you have any questions or comments. Since ly, Scott Hooton attachment cc: site file Tosco Marketing Company,Attention Mr. D. J. Camille,2000 Crow Canyon Place, Suite 400, San Ramon,CA 94583 (w/attachment)