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Chevron Grotmdwater Monitoring Report(4Q200 1) Pane 2 oft ' <br /> Facility: #9-6258-2409 Cast Mair Street,Stockton.CA Dater January 31,2002 I <br /> •-� II <br /> DISCUSSION: <br /> This groundwater monitoring and sampling event was performed by Gettler-Ryan Inc. on November 29,2001. <br /> Three wells were.sampled during this event. MW-3 was not accessible due to a car parked over the well. Benzene EI <br /> was not detected in the samples collected from the three wells. TPHg, MtBE, and TAME were detected only in the <br /> sample collected from MW-4 at concentrations of 85 µg/I, 36 p0l, and 4 pg/l, respectively. Depth'to water across <br /> the site increased an average of approximately 1.68 feet from the previous sampling event, which occurred in <br /> October, 1997. Groundwater flow was to the northeast at 0.0005 ft.lft. ;I <br /> LIMITATIONS: <br /> The findings presented in this letter are based on data and interpretations provided by Gettler-Ryan, Inc. Gettler- <br /> Ryan's report is attached. The data presented in this summary is accurate only to the degree implied by the sources '1', <br /> and methods used. No warranty, expressed or implied, is made by SECOR. <br /> If you have any questions, please feel free to call us at(9 16)861-0400. <br /> ' I <br /> Sincerely,' <br /> SECOR International Inc. <br /> i <br /> William E. Brasher, P.E. :J <br /> Project Manager <br /> i <br /> dll <br /> i <br /> ATTACHMENTS: <br /> Attachment A—January 11,2001 Groundwater Monitoring& Sampling Report by Gettler-Ryan Inc. :I <br /> cc: Bob Cochran, Chevron Products Company, P.O. Box 6004, San Ramon, CA 94583-0804 �I <br /> Marty Hartzell, RWQCB—CVR, 3443 Routier Road, Suite A, Sacramento, CA 95827 <br /> ,II <br /> i, <br /> I <br /> III i <br /> ii <br /> .il <br /> ii <br /> .i <br />