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1 <br /> CALIFORNIA LABORATORY SERVICES <br /> 07/22/04 12 22 <br /> ENSR-Sacramento Project Former Unocal 5098,5606 CLC#'W rV8trode--#"RG0548 <br /> 10411 Old Placeryille 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 /> Blank(CN05593-BLK1) Prepared&Analyzed 07/16/04 <br /> 1,3,5-Tnmethylbenzene ND 050 pg/L <br /> Vinyl chloride ND 10 <br /> Xylenes(total) ND 10 " <br /> Surrogate I 1-Dichloroethane-d4 126 100 126 66-150 <br /> Surrogate Toluene-d8 119 100 119 71-125 <br /> Surrogate 4-Bromofluorobenzene 112 100 112 73-125 <br /> LCS(CN05593-BSI) Prepared&Analyzed 07/16/04 <br /> Benzene 19 5 0 50 pg/L 20 0 975 60-135 <br /> Chlorobenzene 20 7 0 50 20 0 104 60-133 <br /> 1,1-Dichloroethene 18 8 0 50 200 94 0 42-150 <br /> Toluene 20 6 0 50 200 103 60-137 <br /> Trichloroethene 19 4 0 50 20 0 97 0 62-140 <br /> Surrogate 12-Dichloroethane-d4 118 100 118 66-150 <br /> Surrogate Toluene-d8 108 "__ _ 100 _ _ _ __ __ _ 108 72-125 _ <br /> Surrogate 4-Bromofluorobenzene 101 100 101 73-125 <br /> —---Prepared-&Analyzed-07/16104 T-- - -- - - - � <br /> Benzene 19 0 0 50 µg/L 200 95 0 60-135 260 25 <br /> Chlorobenzene 20 0 050 200 100 60-133 344 25 <br /> 1,1-Dichloroethene 186 0 50 200 93 0 42-150 107 25 <br /> Toluene 200 050 200 100 60-137 2 96 25 <br /> `Trichloroethene W 192 050 - ` 200 96 0 62-140 104 25 <br /> Surrogate 12-Dichloroethane-d4 119 100 119 66-150 <br /> Surrogate Toluene-d8 113 10 0 113 72-125 <br /> Surrogate 4-Bromofluorobenzene 104 100 104 73-125 <br /> Matrix Spike(CN05593-MSI) Source CNG0548-01 Prepared&Analyzed 07/16/04 ' <br /> Benzene 796 050 pg/L 200 59 103 32-152 <br /> Chlorobenzene 16 8 0 50 200 ND 84 0 62-134 <br /> 1,1-Dichloroethene 176 0 50 200 ND 880 32-152 <br /> CA DOHS ELAP Accredltation/Realstratlon Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www callfornialab cam 916-638-7301 Fax. 916-638-4510 1 <br />