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I <br /> I CALIFORNIA LABORATORY SERVICES <br /> 1 07/29/04 10 48 <br /> ENSR-Sacramento Project Former Unocal 5098,5606CLc W X8r0 "7' G0701 <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 Hemngburg <br /> Volatile Organic Compounds by EPA Method 8260B- Quality Control <br /> I <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPL) Limit Notes <br /> Batch CN05777-EPA 5030 Water MS <br /> Blank(CN05777-BLK1) Prepared&Analyzed 07/23/04 <br /> 1,3 5-Trimethylbenzene ND 050 µg/L <br /> Vinyl chloride ND 1 0 " <br /> Xylenes(total) ND I 0 I. <br /> Surrogate 1 2-Drchloroethane-d4 134 I, 100 134 66-150 <br /> Surrogate Toluene-d8 101 100 101 72-125 <br /> Surrogate 4-Bromofluorobenzene 990 100 990 73-125 <br /> LCS(CN05777-BSI) Prepared&Analyzed 07/23/04 <br /> Benzene 232 050 µg/L 200 116 60-135 <br />,Cllorolonzene 21 1 050 200 106 60-133 <br /> *oene <br /> hloroethene 232 050 200 116 42-150 <br /> 253 0 50 200 126 60-137 <br /> Trichloroethene 218 0 50 200 109 62-140 <br /> Surrogate 12-Dichloroethane-d4 121 10 0 121 66-150 <br /> Surrogate Toluene-d8 131 100 132 72-125 S-GC <br /> Surrogate 4-Bromofluorobemene 921 100 92 1 73-125 <br /> LCS Dup(CN05777-BSDI) Prepared&Analyzed 07/23/04 <br /> Benzene 23 1 050 pg/L 200 116 60-135 0 432 25 <br /> Chlorobenzene 21 1 050 200 106 60-133 000 25 <br /> I,1-Dichloroethene 23 1 0 50 11 20 0 116 42-150 0 432 25 <br /> Toluene 249 050 200 124 60-137 I 59 25 <br /> Trichloroethene 226 050 200 113 62-140 3 60 25 <br /> Surrogate 1 1-Drchloroethane-d4 122 10 0 122 66-150 <br /> Surrogate Toluene-d8 11 7 100 127 72-125 S-GC <br /> Surrogate 4-Bromofluorobenzene 948 10 0 948 73-125 <br /> I <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> L249 Fitzgerald Road Rancho Cordova.CA 95742 www calhfornlalab com 916-638-7301 Fax 916-638-4510 <br />