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SECOR 3017 Kilgore Road,Suite 100 <br /> _ ^ INTERNATIONAL Rancho Cordova.CA 95670 <br /> Q <br /> E C R INCORPORATED 916-861-0400 TEL <br /> 916-861-0430 FAX <br /> August 31, 2004 � ECQ- 771`}\; <br /> SEP 0 2 2004 <br /> Ms. Devra Lewis ENVIRONMENT HEALTH <br /> California Regional Water Quality Control Board PERMIT/SERVICES <br /> 11020 Sun Center Drive, Suite 200 <br /> Rancho Cordova, California <br /> RE: 2004 Chevron Pipeline Characterization Work Plan <br /> Chevron Pipeline (MP 9.90) 30-2792 <br /> Adjacent to 541 West Grant Line Road <br /> Tracy, California <br /> SECOR Project No.: 77CH.32792.01.0120 <br /> Dear Ms. Lewis: <br /> SECOR International Incorporated (SECOR), on behalf of Chevron Environmental <br /> Management Company (Chevron), has prepared this work plan (Work Plan) to further <br /> characterize a section of the Chevron pipeline (Pipeline) located adjacent to 541 West <br /> Grant Line Road, Tracy, California. This Work Plan was prepared pursuant to a phone <br /> conversation between Robert J. (Bob) Cochran of Chevron, David Evans of SECOR, and <br /> Devra Lewis of the California Regional Water Quality Control Board (CRWQCB) on August <br /> 19, 2004. During this phone conversation the CRWQCB requested that Chevron verify the <br /> location of the Pipeline with respect to West Grant Line Road, prepare a historical <br /> groundwater flow rose diagram using data from Chevron Service Station 9-8632 (575 West <br /> Grant Line Road), evaluate product throughput and testing records for the Pipeline, and <br /> prepare a map depicting utilities located near the Pipeline. <br /> This Work Plan includes a brief site description, proposed scope of work and schedule. <br /> SITE DESCRIPTION <br /> The section of the Pipeline (Milepost 9.90) is located approximately 50 feet south of 541 <br /> West Grant Line Road in Tracy, California (Figure 1). The Pipeline runs underground down <br /> West Grant Line Road (Figure 2). The surrounding area consists of commercial buildings, <br /> residential lots, and an unlined storm water basin that is located south of undeveloped <br /> property. The pipeline has been an active refined fuel pipeline since 1965. There have <br /> been no reported leaks from the Pipeline in this area to date. <br /> I:\Chevron\32792\Reports\2004 Chevron Pipeline Characterization Work Plan.doc <br /> ,r <br /> �i <br />