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JCALIFoRNIA LABORATORY SERVICES <br /> 07/22/04 12 22 <br /> ENSR-Sacramento Project Former Unocal 5098, 5606 R'-- WorV 81,01erl'EAG0548 <br />' 10411 Old Placerville Rd,Suite 210 Project Number 06940-293-100 COC# 1,2,3 <br /> Sacramento,CA 95827-2508 Project Manager Ben 1 Heningburg <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 CN05593- EPA 5030 Water MS <br /> Matrix Spike(CN05593-MSI) Source CNG0548-01 Prepared&Analyzed 07/16/04 <br />'Toluene 260 050 µg/l- 200 78 91 0 58-139 <br /> Trichloroethene 166 0 50 200 ND 830 55-138 <br /> Surrogate 12-Dichloroethane-d4 759 10 0 759 66-150 <br /> Surrogate Toluene-d8 9 38 100 938 72-125 <br /> Surrogate 4-Bromofluorobenzene 943 100 943 73-125 <br /> Matrix Spike Dup(CN05593-MSDI) Source CNG0548-01 Prepared&Analyzed 07/16/04 <br />'Benzene 789 0 50 pg/L 20 0 59 995 32-152 0 883 25 <br /> Chlorobenzene 165 0 50 200 ND 825 62-134 1 80 25 <br /> Tor, <br /> 17 3 0 50 " 200 ND 865 32-152 172 25 <br /> e 25 8 0 50 200 7 8 90 0 58-139 0 772 25 <br />'Tnc loroethene 16 3 0 50 200 ND 81 5 55-138 1 82 25 <br /> Surrogale 1 2-Dichloroethane-d4 718 100 718 66-150 <br />' <br /> Surrogate Toluene-d8 888 i; 100 888 72-125 <br /> Surrogate 4-Bromo luorobenzene 883 100 883 73-125 <br /> i <br /> CA DOHS EL AP Accreditation/RegistrattonNumber 1233 <br />'3249 Fitzgerald Road Rancho Cordova, CA 95742 www callfornlalab com 916-638-7301 Fax 916-638-4510 <br />