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i <br /> CALIFORNIA LABORATORY SERVICES <br /> 03/08/04 12 43 <br /> ENSR-Sacramento Protect Former Unocal 2859, 1665 Ptc�f` 4rvke rge gnCNGU011 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-357-100 CaO�C�# 1,2,3 <br /> Sacramento,CA 95827-2508 Project Manager Ben I Henmgburg <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Reporting Spike Source %REC RPD <br /> �..Iyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Ra Itch CN01760-EPA 5030 Water MS <br /> lank(CN01760-BLK1) Prepared&Analyzed 03/03/04 <br /> i-isopropyl ether ND 0 50 pg/l, <br /> Ethyl tert-butyl ether ND 0 50 " <br /> (ethyl tert-butyl ether ND 050 " <br /> rt-Amyl methyl ether ND 050 <br /> ert-butyl alcohol ND 50 " <br /> 1,2-Dibromoethane(EDB) ND 050 " <br /> ■2-Dichloroethane ND 050 " <br /> urrogale Toluene-d8 985 100 985 72-125 <br /> =LCS(CN01760-BSI) Prepared&Analyzed 03/03/04 <br /> I tert-butyl ether 198 0 50 pg/L 200 990 52-130 <br /> Surrogate Toluene-d8 103 100 103 72-125 <br /> CS Dup(CNO]760-BSD1) Prepared&Analyzed 03/03/04 <br /> ethyl tert-butyl ether 21 3 0 50 Iig1L 200 106 52-130 730 30 <br /> Surrogate Toluene-d8 104 100 104 72-125 <br /> 1 <br /> 1 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 1249 Fitzgerald Road Rancho Cordova, CA 95742 www californtalab com 916-638-7301 Fax 916-638-4510 <br />