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CALIFORNIA LABORATORY SERVICES <br /> 12/16/03 09 14 <br /> ' ENSR-Sacramento Project Former Unocal 2859, 1665 C� �V�e�Sr$ertn�0104 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-357-100 <br /> Sacramento,CA 95827-2508 Project Manager Ben Heningburg COC# <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch CL31009-EPA 5030 Water MS <br /> IBlank(CL31009-BLK1) Prepared&Analyzed 12/09/03 <br /> Tert-amyl methyl ether ND 050 pg/L <br /> Tert-butyl alcohol ND 5 0 " <br /> ' 1,2-Dibromoethane(EDB) ND 050 <br /> I 2-Dichloroethane ND 050 <br /> Surrogate Toluene-d8 9 82 100 98 2 72-125 <br /> ' LCS(CL31009-BSI) Prepared&Analyzed 12/09/03 <br /> Methyl tert-butyl ether 190 050 pg/L 200 -950 52-130 <br /> Surrogate Toluene-d8 107 100 107 72-125 <br /> S Dup(CL31009-BSDI) Prepared&Analyzed 12/09/03 <br /> ethyl ter(-butyl ether 21 1 050 pg/L 200 106 52-130 105 30 <br /> Surrogate Toluene-d8 106 100 106 72-125 <br /> Batch CL31011 -EPA 5030 Water MS <br /> Blank(CL31011-BLKI) Prepared&Analyzed 12/09/03 <br /> Di-isopropyl ether ND 0 50 pg/L <br /> Ethyl tert-butyl ether ND 050 <br /> Methyl tert-butyl ether ND 0 50 " <br /> ' Tert-amyl methyl ether ND 050 '1 <br /> Tert-butyl alcohol ND 5 0 <br /> 1 2-Dibromoethane(EDB) ND 0 50 " <br /> 1 2-Dichloroethane ND 050 " <br /> Surrogate Toluene-d8 9 91 100 991 72-125 <br /> LCS(CL31011-BSI) Prepared&Analyzed 12/09/03 <br /> Methyl tert-butyl ether 198 050 pg/L 20 0 990 52-130 <br /> Surrogate Toluene-d8 104 100 104 72-125 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 www californtalab.com 916-638-7301 Fax- 916-638-4510 <br />