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California Regional Water Quality Control Board <br /> Central Valley Region <br /> Robert Schneider,Chair <br /> Winston H.Hickox Gray Davis <br /> Secretaryfor Sacramento Main Office Governor <br /> Environmental Internet Address: http://www.swrcb.ca.gov/rwgcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> 28 March 2001 <br /> Mr. Scott Hooton Mr. Larry Silva Mr. Kyle Mullins <br /> BP Oil Company Tosco Refining Company ST Services <br /> 295 SW 41" Street P.O. Box 2628 17304 Preston Road <br /> Building 13, Suite N 9645 Sante Fe Springs Road Suite 1000 <br /> Renton, WA 98055-4931 Sante Fe Springs, CA 90670 Dallas, TX 75252 <br /> REVIEW OF REPORTS, FORMER BP TERMINAL#10013, STOCKTON, SAN JOAQUIN <br /> COUNTY <br /> We have reviewed the 28 December 2000 Third Quarter 2000 Groundwater Monitoring Report(Third <br /> Quarter Report), the 19 January 2001 Subsurface Investigation Report(Investigation Report), and the 24 <br /> January 2001 Fourth Quarter 2000 Groundwater Monitoring Report(Fourth Quarter Report) submitted <br /> by Cambria Environmental Technology, Inc. (Cambria) on behalf of BP Oil for the former BP Oil Bulk <br /> Terminal No. 10013, 3505 Navy Drive in Stockton. The Investigation Report summarizes the <br /> procedures of the recovery testing performed in eight monitoring wells, the results of a utility survey, <br /> and the soil and grab groundwater samples collected from nine direct-push drilling locations. The <br /> Investigation Report recommends a water well survey for a one-half mile radius of the site and a review <br /> of monitoring well locations and historic groundwater analytical data to better define the lateral extent of <br /> MTBE. <br /> The Third and Fourth Quarter Reports summarize the results of the 25 August 2000 and 15 November <br /> 2000 sampling events. <br /> We have the following comments on these reports. <br /> 1. An explanation is needed as to why the pumping equipment remained in monitoring wells MW-8 <br /> and MW-9, while the pumping equipment was removed from the other six monitoring wells <br /> utilized during the recovery test and how leaving the pumping equipment in the two monitoring <br /> wells may have affected the recovery testing results. <br /> 2. An explanation is needed as to why other attempts were not made to collect deep grab <br /> groundwater samples from CB-2 and CB-6W. <br /> 3. The Investigation Report should include cross-section diagrams of site lithology. <br /> California Environmental Protection Agency <br /> �a Recycled Paper <br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. <br /> For a list of simple ways you can reduce demand and cut your energy costs,see our Web-site at http://www.swrcb.ca.gov/rwgcb5 <br />