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E C 0 R -- <br /> Victoria McCartney <br /> April 24, 2003 <br /> Page 2 <br /> Number of Detections Minimum Maximum <br /> Constituents above the MDL of the 15 Concentration in prg1L(Well ID) Concentration In y91L(Welt ID) <br /> Total Samples <br /> TPHg 4 2,400(MW-7) 110,000(MW-9S) <br /> Benzene 4 18(MW-9) 7,400(MW-9S) <br /> MtBE 0 ND ND <br /> Definitions: <br /> MDL=Method Detection Limit <br /> pg/L=Micrograms per Liter <br /> ND =Non Detect <br /> Should you have any questions or concerns regarding these activities, please feel free to contact me <br /> (916)-861-0400 extension 284. <br /> Sincerely, <br /> SECOR International Incorporated <br /> Uk <br /> 7 IPL--- <br /> William E. Brasher, P.E. <br /> Project Manager <br /> ATTACHMENTS: <br /> Attachment A—February 11, 2003 Groundwater Monitoring& Sampling Report by Gettler-Ryan Inc. <br /> cc: Robert J. Cochran, CEMC, P.O. Box 6004, San Ramon, CA 94583-0804 <br /> Jim Barton, RWQCB-CVR, 3443 Routier Road, Suite A, Sacramento, CA 95827 <br /> Greyhound Lines, P.O. Box 660362, Dallas TX 75266-0362 <br /> I:1Chevmn1905571Periodic Monitoring1200311 Q2003 QMR 90557.doe SECOR Intemational Incorporated <br />