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Stantec Consulting Corporation <br /> 3017 Kilgore Road Suite 100 <br /> Rancho Cordova CA 95670 <br /> Tel:(916)861-0400 <br /> Fax: (916)861-0430 ,. <br /> Stantec <br /> March 13, 2009 <br /> Mr. Mike Infurna <br /> San Joaquin County Environmental Health Department <br /> 600 East Main Street <br /> Stockton, California 95202 <br /> RE: Status Report February 2009 <br /> Former ARCO Service Station No. 443 <br /> 2478 E. Oak Street <br /> Stockton, California 95205 <br /> File No.: 211601012.201.213 <br /> Dear Mr. Infurna: <br /> This letter, prepared by Stantec Consulting Corporation (Stantec) on behalf of Atlantic Richfield <br /> Company (ARC), a BP Affiliated Company, presents the monthly status report for <br /> February 2009 as described in the Addendum to Interim Remediation Action Plan dated <br /> September 10, 2008. <br /> On February 24, 2009 Stratus Environmental, Inc. of Cameron Park, California field staff <br /> observed Belshire Environmental Services, Inc. of Lake Forest, California (Belshire) remove <br /> 1,900 gallons of water from groundwater monitoring wells MW-1S, MW-1D, and MW-2S. MW- <br /> 1D went dry five hours and 55 minutes after extraction was initiated. Groundwater was <br /> extracted from MW-1S during the entire seven hours and 27 minutes the extraction apparatus <br /> was running. A total of 1,900 gallons of water was extracted from the site. Extracted <br /> groundwater was removed from the site by Belshire and disposed of at licensed waste disposal <br /> facility. <br /> Evaluation of Recovery <br /> Groundwater recovery was approximately 81 percent higher than the previous month. With <br /> additional potential rainfall events we anticipate an equivalent recovery in the coming months <br /> ahead. We will continue this interim remedial action approach through the end of March 2009 as <br /> planned. <br /> 1 <br /> 443 Status Report 0902.doc <br />