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S E C 0 R <br /> Vicki McCartney <br /> January 29, 2004 <br /> • Page 2 <br /> h� <br /> Number of Detections Minimum Maximum <br /> Constituents above the MDL of the 3 Concentration in pg/L(Well ID) Concentration in pglL(Well ID) <br /> Total Samples <br /> .4.1 <br /> TPHg 2 620 (MW-2) 6,800(MW 3) <br /> Benzene 2 5(MW-2) 500(MW-3) <br /> MtBE 3 3(MW-1 &MW-3) 590(MW-2) <br /> (41 <br /> Definitions TPHg =Total petroleum hydrocarbons as gasoline � <br /> MDL = Method detection limit MtBE= Methyl tertiary butyl ether <br /> pg/L = Micrograms per liter <br /> Should you have any questions or concerns regarding these activities, please feel free to contact me <br /> at 916-861-0400, ext 283 , <br /> Sincerely, " <br /> SECOR International Incorporated <br /> Ai <br /> /obW Jackson, Jr <br /> Staff Geologist <br /> Attachments <br /> Attachment 1 Groundwater Monitoring & Sampling Report by Gettler-Ryan Inc , dated December 3, 2003 <br /> cc Robert J Cochran, Chevron Environmental Management Company, San Ramon, CA 94583 <br /> Marty Hartzell, Regional Water Quality Control Board-CVR, Rancho Cordova, CA 95670 <br /> d <br /> r� <br /> t <br /> a <br /> i3 <br /> 1Chevron1920331Periodic Monitonng120031402003 QMR 92033 doc SECOR International Incorporated R <br />