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CALIFORNIA LABORATORY SERVICES <br /> 08/13/04 17 03 <br /> ENSR-Sacramento Project Former Unocal 5098,5606tNF*AX81,00eV,CNG0469 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-293-100 COC# 1,2 <br /> Sacramento,CA 95827-2508 Project Manager Ben I Heningburg <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Reporting _ <br /> Analyte Result Limit Units Dilution Batch Prepared Anaiyzed Method Not <br /> MW-1 (CNG0469-01)Water Sampled 07/14/04 12 14 Received 07/14/04 19 10 <br /> Surrogate 1 2-Dichloroethane-d4 120% 66-150 CN05536 07115104 07115104 EPA 8260E <br /> Surrogate Toluene-d8 103% 72-125 <br /> Surrogate 4-Bromgfluorobenzene 104% 73-125 " <br /> MW-5(CNG0469-02)Water Sampled 07/14/04 15 14 Received 07/14/0419 10 <br /> Acetone ND 10 µg/L 1 CN05536 07/15/04 07/15/04 EPA 8260B <br /> Benzene ND 050 " <br /> Bromobenzene ND 050 <br /> Bromochloromethane ND 050 <br /> BromodiLhloromethaiie ND 0 50 " <br /> Bromoform ND 050 " <br /> Bromomethane ND 10 <br /> 2-Butanone ND 10 <br /> n-Butylbenzene ND 050 " <br /> sec-Butylbenzene ND 050 " <br /> tert-Butylbenzene ND 050 " <br /> Carbon tetrachloride ND 0 50 " <br /> Chl&—o nzene ND 0 50 "— <br /> Chloroethane ND 050 " <br />--- Chloroform------ --- --- — ND-- 0 50 --"—"---" — " — -- - ----' <br /> Chloromethane ND 10 " <br /> _ -- o-Chlorotoluene -------- - - - - --- -ND- ---0 50-- - -i-- --- — -- - - - -- --'= -- --_--- - - --- — <br /> p-Chiorotoluene ND 050 " <br /> Dibromochloromethane ND 050 <br /> _ _1,2-Dibromo-3-chloropropane ND- 10 <br /> 1,2-Dibromoethane(EDB) ND 0 50 " <br /> Dibromomethane ND 050 ' <br /> 1,2-Dichlorobenzene ND 050 " <br /> 1,3-Dichlorobenzene ND 0 50 " <br /> 1,4-Dichlorobenzene ND 0 50 " <br /> Dichlorodifluoromethane(Freon 12) ND 10 ' <br /> 1,1-Dichloroethane ND 050 " <br /> 1,2-Dichloroethane ND 050 " <br /> 1,1-Dichloroethene ND 0 50 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www californialab com 916-638-7301 Fax 916-638-4510 <br />