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CALIFORNIA LABORATORY SERVICES <br /> p �g t� ��1pp2/16/03 09 14 <br /> ENSR-Sacramento Protect Former Unocal 2859, 1665 C� fV r�iOr�er#nCML0104 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-357-100 <br /> Sacramento,CA 95827-2508COC# <br /> Project Manager Ben Hentngburg <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 CL31001 -EPA 5030 Water MS <br /> Blank(CL31001-BLK1) Prepared&Analyzed 12/09/03 <br /> Di-isopropyl ether ND 050 gglL <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 50 " <br /> 12-Dibromoethane{EDB) ND 050 " <br /> 1,2-Dichloroethane ND 050 <br /> Tetrachloroethene ND 050 <br /> Surrogate Toluene-d8 112 100 112 71-125 <br /> S(CL31001-BSI) Prepared&Analyzed 12/09/03 <br /> ethyl tert-butyl ether 178 050 pg/L 200 890 52-130 <br /> Surrogate Toluene-d8 114 too 114 72-125 <br /> LCS Dup(CL31001-BSD1) Prepared&Analyzed 12/09/03 <br /> Methyl tert-butyl ether 176 050 µg/L 200 880 52-130 1 13 30 <br /> Surrogate Toluene-d8 115 11100 115 72-125 <br /> Matrix Spike(CL31001-MS1) Source CML0104-18 Prepared&Analyzed 12/09/03 <br /> Methyl tert-butyl ether 149 050 µg/L 200 ND 745 52-140 <br /> Surrogate Toluene-d8 110 " loo 110 72-125 <br /> Matrix Spike Dup(CL31001-MSD1) Source CML0104-18 Prepared&Analyzed 12/09/03 <br /> Methyl tert-butyl ether 21 0 050 pg/L 200 ND 105 52-140 340 30 QR-02 <br /> Surrogate Toluene-d8 109 100 109 72-115 <br /> Batch CL31009-EPA 5030 Water MS <br /> Blank(CL31009-BLKI) Prepared&Analyzed 12/09/03 <br /> Di-isopropyl ether ND 050 gg/L <br /> Ethyl tert-butyl ether ND 050 " <br /> Methyl tert-butyl ether ND 050 <br /> CA DOHS ELAP Accreditation/Regtstration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 www callfornlalab com 916-638-7301 Fax. 916-638-4510 <br />