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CALIFORNIA LABORATORY SERVICES ' <br /> 09/09/04 15 38 ' <br /> ENSR-Sacramento Project Former Unocal 2859, 166'ffi Wo Vdr18crtWnCNH0847 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-357-100 COC# e <br /> Sacramento,CA 95827-2508 Project Manager Ben I Heningburg <br /> GasBTEX by GC PID/FID - Quality Control , <br /> Reporting Spike Source T %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes , <br /> Batch CN06673- EPA 5030 Water GC <br /> Blank(CN06673-BLK1) Prepared&Analyzed 08/27/04 ' <br /> Gasoline ND 50 µg/L <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 , <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 10 <br /> Surrogate o-Chlorotoluene(BTEh) 213 200 106 65-135 ' <br /> Surrogate o-Chlorotoluene(Gas) 188 200 94 0 65-135 <br /> LCS(CN06673-BSI) Prepared&Analyzed 08/27/04 <br /> Benzene 21 5 050 pg/L 200 108 70-140 <br /> Toluene 206 050 200 103 70-140 <br /> Ethylbenzene 208 0 50 200 104 70-140 <br /> Xylenes(total) 65 6 10 600 109 70-140 <br /> Surrogate o-Chlorotoluene(BT-FX) 214 200 107 65-135 <br />�LCS Dup(CN06673-BSDI) Prepared&Analyzed-08/27/04 <br /> Benzene 220 050 gg/L 200 110 70-140 2 30 30 <br /> Toluene 21 6 050 200 108 70-140 4 74 30 <br /> _Ethylbenzene _ = - _ — _ -213--__ __-050- _ ----200-_---- - ----106--- 70-140 _2 3830 <br /> Xylenes(total) 660 10 600 110 70-140 0 608 30 , <br /> Surrogate o-Chlorotoluene(BTEX) 201 200 100 65-135 <br /> Matrix Spike(CN06673-MSI) Source CNHO847-04 Prepared&Analyzed 08/27/04 <br /> Benzene 224 050 pg/L 200 1 5 104 60-140 ' <br /> Toluene 225 050 200 1 6 104 60-140 <br /> Ethylbenzene 22 1 050 200 1 6 102 60-140 <br /> Xylenes(total) 69 7 10 600 55 107 60-140 , <br /> Surrogate o-Chloratoluene(BTTX) 196 200 980 65-135 <br /> • <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www californlalab com 916-638-7301 Fax 916-638-4510 ' <br />