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5 EC ® R <br /> Ms Vicki McCartney <br /> July 30, 2004 <br /> Page 2 <br /> > 2 <br /> 4 <br /> Number of Detections Minimum Maximum <br /> Constituents above the MDL of the 3 Concentration in pg/L(Well ID) Concentration in pg1L(Well ID) <br /> Total Samples s r <br /> TPHd 1 ND 4 900(MW-1) <br /> TPHg 2 76 (MW-2) 7 000 (MW-3) <br /> ND 1,500(MW-3) <br /> Benzene 1 P <br /> MtBE 3 2(MW-1) 1,200(MW-2) <br /> Definitions <br /> MDL = Method detection limit ND=Non detect <br /> Ng/L = Micrograms per liter ate <br /> t7, <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 /> id M Evans <br /> Project Manager <br /> Attachments <br /> Attachment A—June 11, 2004 Groundwater Monitoring & Sampling Report by Gettler-Ryan <br /> Incorporated <br /> 3 <br /> cc Robert J Cochran, Chevron Environmental Management Company, San Ramon, CA / <br /> Jim Barton, Regional Water Quality Control Board-CVR, Rancho Cordova, CA <br /> r� <br /> 3 <br /> °fF <br /> �A <br /> t <br /> 1 IChevron1920331Periodic Monitonng120041202004 QMR 92033 doc SECOR international incorporated <br /> n <br />