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I <br /> CALIFORNIA LABORATORY SERVICES <br /> I04/25/05 1129 <br /> ENSR-Sacramento Project Former Unocal 5098,5606 ffi'W1 rV6r0dfekrt7,9D0543 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-293-100 COC# 1,2,3,4 <br /> Sacramento,CA 95827-2508 Project Manager Margret Riggin <br /> IVolatile Organic Compounds by EPA Method 8260B -Quality Control <br /> Reporting Spike Source °/"1tEC RPD <br /> Analyte Result Llmlt Units Level Result °/aREC Limits RPD Limit Notes <br /> Batch C002903-EPA 5030 Water MS <br /> Blank(CO02903-BLKI) Prepared&Analyzed 04/18/05 <br /> 1,3,5-Trunethylbenzene ND 050 µg/L <br /> Vinyl chloride ND 10 " <br /> Xylenes(total) ND 10 <br /> Surrogate 1,1-Dichloroethane-d4 941 100 941 66-135 <br /> Surrogate Toluene-d8 917 100 917 72-115 <br /> Surrogate 4-Bromofluorobemene 977 100 977 73-125 <br /> LCS(CO02903-BS1) Prepared&Analyzed 04/18/05 <br /> Benzene 196 0 50 µg/L 200 980 60-135 <br /> obenzene 190 0 50 200 950 60-133 <br /> I ichloroethene 221 0 50 200 110 42-150 <br /> Toluene 192 0 50 200 96 0 60-137 <br /> Trichloroethene 184 050 200 920 62-140 <br /> ISurrogate 1,2-Dichloroethane-d4 937 100 93 7 66-135 <br /> Surrogate Toluene-d8 936 100 936 72-125 <br /> Surrogate 4-Bromofluorobenzene 9 71 100 972 73-125 <br /> ILCS Du (CO02903-BSD1) Prepared&Analyzed 04/18/05 <br /> Benzene 201 050 µg/L 200 100 60-135 2 52 25 <br /> Chlorobenzene 19 6 050 200 98 0 60-133 3 1 I 25 <br /> 1,1-Dichloroethene 223 050 200 112 42-150 0 901 25 <br /> Toluene 196 050 200 98 0 60-137 206 25 <br /> Tnchloroethene 190 050 200 95 0 62-140 3 21 25 <br /> Surrogate 11-Dtchloroethane-d4 935 10 0 935 66-135 <br /> Surrogate Toluene-& 935 100 93 5 72-115 <br /> Surrogate 4-Bromofluorobenzene 9 78 100 978 73-125 <br /> I <br /> i <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fltzgerald Road Rancho Cordova, CA 95742 www.callfornialab cam 916-638-7301 Fax: 915-638-4510 <br />