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I, <br /> SECOR <br /> September 28, 2001 International Incorporated <br /> Project 077.443098.530 0 - <br /> Mr. Harlin Knoll <br /> San Joaquin County Public Health Services OCT 0 1 2001 <br /> Environmental Health Division EM/IN—­; 1�Ll H <br /> 304 East Weber Avenue,Third Floor PE ; f, ;',;. ,cS <br /> Stockton, California 95202 <br /> Re: Groundwater Monitoring Well Abandonment <br /> ARCO Service Station#5650 <br /> 18970 Lower Sacramento Road <br /> Woodbridge, California <br /> Dear Mr. Knoll: <br /> This letter, prepared by SECOR International Incorporated (SECOR) on behalf of Atlantic <br /> Richfield Company (ARCO), presents the results of the abandonment of monitoring wells MW-1, <br /> MW-2, and MW-3, at the above referenced site (Figure 1). Monitoring well abandonment was <br /> approved by the San Joaquin County Public Health Services (SJCPHS) on September 7, 2001 in a <br /> conversation between Mr. Harlin Knoll with SJCPHS and Clinton Harms with SECOR. <br /> Monitoring wells MW-1, MW-2, and MW-3 were abandoned on September 25, 2001 in <br /> accordance with San Joaquin County requirements and with Bulletin 74-90: California Well <br /> Standards, California Department of Water Resources, June 1991. West Hazmat Drilling of <br /> Rancho Cordova, California, pressure grouted each of the monitoring wells. Upon completion of <br /> pressure grouting, each well was over-drilled to a depth of approximately four feet below ground <br /> surface. The resulting borings were then backfilled to grade with cement grout. <br /> A SECOR representative and Mr. Harlin Knoll of SJCPHS were onsite to observe the well <br /> abandonment activities. <br /> If you have any questions regarding this letter, please call us at (916) 861-0400. <br /> Sincerely, <br /> SECOR International Incorporated <br /> s� <br /> Clinton Harms �Q�O9\k E ESS� <br /> Project Scientist QJS4,^LAJ -�Ios���T <br /> cc N0.C 058399 <br /> t L Exp.) <br /> usty enkosky, P s <br /> CMLN_ <br /> L � <br /> Senior Engineer Of CAUti�P� <br /> Attachments: Figure 1 —Site Map <br /> cc: Ms. Kateri Luka, ARCO <br /> 3017 Kilgore Road, Suite 100, Rancho Cordova, CA 95670 916.861.0400 916.861.0430 Fax www.secor.com <br />