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GRCECENIIEiD <br /> 57-R797-U5 DEC 2 3 2008 <br /> ENVIRONMENTAL, INC, 3330 Cameron Park Drive, Ste 550 <br /> ENVIRUi1'PfE1iT HEALTH Cameron Park, California 95682 <br /> PERM;T/s RyjrES (530)676-6004-Fax:(530)676-6005 <br /> December 22,2008 <br /> Project No. E595-01 <br /> Ms. Lori Duncan <br /> San Joaquin County Environmental Health Department <br /> 600 East Main Street <br /> Stockton, California 95202 <br /> Subject: Well Abandonment Letter Report <br /> ARCO Station No. 595 <br /> 6100 N. Highway 99 <br /> Stockton, California <br /> Dear Ms. Duncan: <br /> Stratus Environmental, Inc. (Stratus), on behalf of Atlantic Richfield Company (ARCO, a <br /> BP-affiliated company), has prepared this Well Abandonment Letter Report for ARCO <br /> Station No. 595, located at 6100 North Highway 99, Stockton, California. Groundwater <br /> monitoring well MW-1 was abandoned in accordance with San Joaquin County <br /> Environmental Health Department (SJCEHD) regulations. The well was replaced with a <br /> more appropriately screened monitoring well. A site plan depicting the location of well <br /> MW-1 (supplied by Secor International Inc.) is attached. Abandonment of this well was <br /> approved by SJCEHD in a letter dated July 28,2008. <br /> Prior to initiating well abandonment activities, a well abandonment permit was obtained <br /> from SJCEHD (copy attached). A licensed drilling contractor (Woodward Drilling Co., <br /> C-57 #710079) performed the well destruction activities. All work was completed under <br /> the direction of Stephen J. Carter, P.G. Ms. Lori Duncan(SJCEHD) was present to observe <br /> well abandonment activities. <br /> On October 27, 2008 the area in the immediate vicinity of well MW-1 was excavated <br /> using an air knife rig to approximately 5 feet bgs for utility clearance. Monitoring well <br /> MW-1 was then destroyed on November 12, 2008 by over-drilling the entire length of the <br /> well column. Drill cuttings were placed in drums and stored at the site pending disposal. <br /> Following completion of the work, Stratus submitted a Well Completion Report to the <br /> California Department of Water Resources (DWR). A copy of this report is attached. <br /> KABP-ARCO Exmute\595\2008 Data Packages\ARCO_595_Well Abandon Ur Report.dm <br />