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CALIFORNIA LABORATORY SERVICES <br /> 07/11/05 12 21 <br /> APEX Envirotech Inc -Gold River Project Cohn Property CLS Work Order# COG0009 <br /> 11244 Pyrites Way Project Number COH01 001 COC# <br /> Gold River,CA 95670 Project Manager Drew Van Allen <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Nat <br /> MW-1 (COG0009-01)Water Sampled 06/30/05 17 50 Recened 07/01/05 10 40 <br /> Di-isopropyl ether ND 050 pg/L 1 C005076 07/06/05 07/06/05 EPA 82608 <br /> Ethyl tert-butyl ether ND 050 " <br /> Methyl tent-butyl ether ND 050 " <br /> tert-Amyl methyl ether ND 050 " <br /> cert-butyl alcohol 85 50 " <br /> Surrogate Toluene-d8 119% 71-115 " <br /> MW-2(COG0009-02)Water Sampled 06/30/05 18 00 Received 07/01/05 10 40 <br /> Di-isopropyl ether ND 050 µg/L I C005076 07/06/05 07/06/05 EPA 8260B <br /> Ethyl tert-butyl ether ND 050 " <br /> Methyl tort-butyl ether ND 050 " <br /> 1wrt-Amyl methyl ether ND 050 <br /> ert-butyll alcohol 27 50 " <br /> Surrogate Toluene-d8 119% 72-125 <br /> MW-3(COG0009-03)Water Sampled 06/30/05 17 40 Received 07/01/05 10 40 <br /> Di-isopropyl ether ND 050 pg/L l C005076 07/06/05 07/06/05 EPA 8260E <br /> Ethyl ten-butyl ether ND 050 <br /> Methyl tert-butyl ether ND 050 " <br /> tert-Amyl methyl ether ND 050 <br /> Tert-butyl alcohol ND 5 0 " <br /> Surrogate Toluene-d8 124% 71-115 " <br /> MW-4(COG0009-04)Water Sampled 06/30/05 17 10 Received 07/01/05 10 40 <br /> Di-isopropyl ether ND 050 µg/L 1 C005076 07/06/05 07/06/05 EPA 8260B <br /> Ethyl tert-butyl ether ND 050 " " <br /> Methyl tert-butyl ether ND 050 " " <br /> tert-Amyl methyl ether ND 050 " <br /> Tert-butyl alcohol ND 5 0 " <br /> Surrogate Toluene-d8 973% 71-115 " <br /> 0 <br /> CA DOHS FLAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www californialab com 916-638-7301 Fax 916-638-4510 <br />