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i <br /> S ECOR.. <br /> .Ms. Victoria McCartney <br /> October 8, 2004 <br /> Page 2 , <br /> Number of Detections <br /> above the MDL of the 9 Minimum Maximum <br /> Constituents Concentration in /L ) <br /> Total Samples Ng (Well iD} Concentration In NgIL(Well ED <br /> TPHg 2 88(MW-6S) 3300(MW-8) <br /> Benzene 0 0� ND ND <br /> MtBE 41 (MW-4) 52,000(MW-8) <br /> Definitions: <br /> MDL=Method detection limit <br /> pg/L=Micrograms per liter <br /> ND =Non detect <br /> If you have any questions or concerns regarding these activities, please feel free to contact me at <br /> (916)861-0400 extension 234. <br /> Sincerely, <br /> SECOR International Incorporated <br /> avid M. Evans <br /> Project Manager <br /> ATTACHMENTS: <br /> Attachment A—September 15, 2004 Groundwater Monitoring & Sampling Report by Gettler- <br /> Ryan Incorporated <br /> cc: Robert J. Cochran, Chevron Environmental Management Company, San Ramon, CA <br /> Jim Barton, Regional Water Quality Control Board, Rancho Cordova, CA <br /> lAChevron1914521Periodic Monitoring1200413Q2004 QMR 91452.doc SECOR International Incorporated <br />