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CALIFORNIA LABORATORY SERVICES , <br /> 11/30/0413:17 , <br /> ENSR-Sacramento Project: Former Unocal 0187,437 EftStVor i:krc#:t5&�709 <br /> 10411 Old Placerville Rd., Suite 210 Project]Number: 06940-325-100 <br /> Sacramento,CA 95827-2508 Project Manager: Ben Heningburg COC#: 1,2, 3 <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 CN09059-EPA 5030 Water MS <br /> LCS Dup(CN09059-BSD1) Prepared&Analyzed: 11/22/04 <br /> Methyl tert-butyl ether 18.0 0.50 pg/L 20,0 90.0 52-130 0.00 30 <br /> Surrogate:Toluene-d8 10.8 10.0 108 72-125 <br /> Batch CN09068-EPA 5030 Water MS , <br /> Blank(CN09068-BLKI) Prepared&Analyzed: 11/22/04 <br /> Di-isopropyl ether ND 0.50 pg/L <br /> Ethyl tert-butyl ether ND 0.50 " <br /> Methyl tert-butyl ether ND 0.50 " <br /> tert-Amyl methyl ether ND 0.50 " <br /> Tert-butyl alcohol ND 5.0 <br /> 1,2-Dibromoethane(EDB) ND 0.50 " <br /> Surrogate:Toluene-d8 9.38 10.0 93.8 72-125 <br /> LCS(CN09068-BSI) Prepared&Analyzed: 11/22/04 <br /> Methyl ter(-butyl ether 17.5 0.50 gg/L 20.0 87.5 52-130 <br /> Surrogate:Toluene-d8 9.66 10.0 96.6 72-125 <br /> LCS Dup(CN09068-BSDI) Prepared&Analyzed: 11/22/04 , <br /> Methyl tert-butyl ether 17.2 0.50 pg/L 20.0 86.0 52-130 1.73 30 <br /> Surrogate:Toluene-d8 9.55 10.0 95.5 72-115 <br /> Batch CN09089-EPA 5030 Water MS <br /> Blank(CN09089-BLKI) Prepared&Analyzed: 11/23/04 <br /> Di-isopropyl ether ND 0.50 gg/L <br /> Ethyl tert-butyl ether ND 0.50 " <br /> Methyl tert-butyl ether ND 0.50 " <br /> tert-Amyl methyl ether ND 0.50 , <br /> Tert-butyl alcohol ND 5.0 " <br /> Surrogate:Toluene-d8 9.37 10.0 93.7 72-125 <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 />