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CALIFORNIA LABORATORY SERVICES - <br /> 04/26/04 08 16 , <br /> ENSR-Sacramento Project Former Unocal 5098, 5606 CLc§1W rV81,01erl,Cl�1D0609 <br /> 10411 Old Placerville Rd Suite 210 Project Number 06940-293-100 COC# 1, 2, 3,4 C <br /> Sacramento,CA 95827-2508 Project Manager Ben 1 Henmgburg <br /> Volatile Organic Compounds by EPA Method 8264B - Quality Control <br /> ' Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch CN03089-EPA 5030 Water MS <br /> LCS(CN03089-BSI) Prepared&Analyzed 04/19/04 <br /> Benzene 208 0 50 µg/L 200 104 60-135 <br /> Chlorobenzene 170 0 50 200 850 60-133 <br /> 11-Dichloroethene 241 050 200 120 42-150 <br /> Toluene 196 050 200 980 60-137 <br /> Trichloroethene 207 0 50 200 104 62-140 <br /> Surrogate 1 2-Drchloroethane-d4 9 78 100 978 66-135 <br /> Surrogate Toluene-d8 - 11 1 100 111 72-125 <br /> Surrogate 4-Bromofluoroberaene 912 100 912 73-125 <br /> LCS Dup(CN03089-BSDI) s Prepared&Analyzed 04119/04- - <br /> Benzene 18 8 050 µg/L 200 94 0 60-135 101 25 <br /> Chlorobenzene 161 050 200 805 60-133 544 25 <br /> I I-Dichloroethene 23 0 0 50 200 115 42-150 467 25 <br /> Toluene 191 050 200 90 5 60-137 796 25 <br /> Trichloroethene 191 0 50 200 95 5 62-140 804 25 <br /> Surrogate 1 2-Drchloroethane-d4 9 78 100 978 66-135 <br /> Surrogate Toluene-d8 108, 100 _108 72-125 <br /> Surrogate 4-Bromofluorobenzene 947 100 947 73-125 <br /> Batch CN03187-EPA 5030 Water MS <br /> Blank(CN03187-BLK1) Prepared&Andlyzed 04/21/04 a <br />_u Acetone _ -_ _ ._ _ ND v 10 _ gg/L <br /> Benzene ND 0 50 <br /> Bromobenzene ND 0 50 " <br /> Bmmochloromethane ND 050 " <br /> Bromodichloromethane ND 050 <br /> Bromoform ND 0 50 ' <br /> Bromomethane ND 10 " <br /> 2-Butanone ND ]0 <br /> n-Butylbenzene ND 050 <br /> sec-Butylbenzene ND 050 " <br />-- e <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www' callfornlalab com 916-638-7301 Fax 916-638-4510 <br />