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CALIFORNIA LABORATORY SERVICES <br /> e <br /> 07/29/04 10 48 <br /> ENSR-Sacramento Project Former Unocal 5098,5606 ftc fWo,,e 8t9f rtW,RG0701 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-293-100 COC# 1,2,3, 4 <br /> Sacramento,CA 95827-2508 Project Manager Ben 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 CN05718-EPA 5030 Water MS <br /> Blank(CN05718-BLKI) Prepared&Analyzed 07/22/04 1 <br /> 13 5-Trtmethylbenzene ND 050 pglL <br /> Vinyl chloride ND 10 " <br /> Xylenes(total) ND 10 <br /> Surrogate 1,2-Drchloroethane-d4 130 100 130 66-150 <br /> Surrogate Toluene-d8 979 100 979 72-125 <br /> Surrogate 4-Bromojluorobenzene 102 " 100 101 73-125 <br /> LCS(CN05718-BSI) Prepared&Analyzed 07/22/04 <br /> Benzene 182 050 µg/L 200 91 0 60-135 <br /> Chlorobenzene 17 7 0 50 11 200 985 60-133 ' <br /> 1,1-Dichloroethene 183 050 200 915 42-150 <br /> Toluene 19 7 0 50 200 985 60-137 <br /> Trichloroethene 177 0 50 200 88 5 62-140 <br /> Surrogate 1 1-Dichloroelhane-d4 118 10 0 118 66-150 <br /> Surrogate_Toluene-d8 12 3— —100 —113___- _72_115 <br /> Surrogate 4-Bromofluorobenzene 9 12 ]Go 912 73-125 <br /> LCS Dup(CN05718-BSD1) -- T - -T- - T Prepared&Analyzed 07/22/04 -- <br /> Benzene _ -- 214 _0_50 gglL 200 - 107 60-135 162 __25_ r <br /> Chlorobenzenc 20 4 0 50 20 0 102 60 133 142 25 <br /> 1 I-Dichloroethene 22 0 0 50 20 0 110 42-150 184 25 <br /> Toluene_ _ 23 3 050 20 0 116 60-137 167 25 <br /> -� Trichloroethene - W _ 21 3 0 50- 20 0 y 106 - 62-140 185 25 <br /> Surrogate 12-Dichloroethane-d4 11 7 100 117 66-150 ' <br /> Surrogate Toluene-d8 II 9 100 119 - 72-125 <br /> Surrogate 4-Bromo.Jluorobenzene 9 70 10 0 970 73-125 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 www callfornlalah com 916-638-7301 Fax, 916-638-4510 <br />