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CALIFORNIA LABORATORY SERVICES <br /> 08/13/04 17 03 <br /> ENSR-Sacramento Project Former Unocal 5098, 5606N AW to er G 0 4 6 9 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-293400 � <br /> COC# 1,2 <br /> Sacramento,CA 95827-2508 Project Manager Ben 1 Hentngburg <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 CN05536-EPA 5030 Water MS <br /> Blank(CN05536-BLKI) Prepared&Analyzed 07/15/04 <br /> 1 2,4-Tnchlorobenzene ND 050 µ8/L <br /> 1 1 I-Trichloroethane ND 050 " <br /> I l 2-Trichloroethane ND 050 " <br /> Trichloroethene ND 050 <br /> Trichlorofluoromethane ND 050 " <br /> 1 2,3-Tnchloropropane ND 050 " <br /> 1,2,4-Tnmethylbenzene - ND 050 <br /> 1,3,5-Trimethylbenzene ND 050 " <br /> Vinyl chloride ND 10 " <br /> Xylenes(total) ND 10 <br /> Di-isopropyl ether ND 050 " <br /> Ethyl tert-butyl ether ND 050 " <br /> tert-Amyl methyl ether ND 050 " <br /> Teri-butyi alcohoi ND 50 <br /> Surroga[e 12-Dichloroerhane-d4 126 !0 0 116-66=150 <br /> Surrogate Toluene-d8 980 100 980 72-125 <br /> --- _ <br /> Surrogate 4-Bromofluarobenzene - "T-- 102"l"----T T„�100 --�102�73=115�— <br /> LCS(CN05536-BSI) Prepared&Analyzed 07/15/04 <br /> Benzene 196 050 µg/L 200 980 60-135 <br /> Chlorobenzene 202 050 200 101 60-133 <br /> - �-- i 1-Dichloroethene - 152 050 - „y 200 t` - 760 - 42-150W - <br /> Toluene 227 050 200 114 60-137 ' <br /> Trichloroethene 215 050 200 108 62-140 <br /> Surrogate 1 2-Dichloroeihane-d4 112 100 111 66-150 ' <br /> Surrogate Toluene-d8 119 100 119 72-125 <br /> Surrogate 4-Bromofluorobenzene 969 100 969 73-125 <br /> CA DOHS ELAP Accreditation/Regtstratlon Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www californialab.com 916-638-7301 Fax 916-638-4510 <br />