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1 <br /> CALIFORNIA LABORATORY SERVICES <br /> 11/23/04 13 10 <br /> ENSR-Sacramento Project Former Unocal 5098, 5400 f tc5{1WWyk d.% kt�n 0683 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-293-120 COC 40519 <br /> Sacramento,CA 95827-2508 Project Manager Ben I Hentngburg <br /> IVolatile 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 CN09036-EPA 5030 Soil MS <br /> Blank(CN09036-BLKI) Prepared&Analyzed 11/19/04 <br /> Di-isopropyl ether ND 50 µg/kg <br /> Ethyl tert-butyl ether ND so " <br /> Methyl tert-butyl ether ND 5 0 <br /> tert Amyl methyl ether ND so <br /> Tert-butyl alcohol ND 50 " <br /> Surrogate Toluene-d8 509 -500 102 60-140 <br /> LCS(CN09036-BS1) Prepared&Analyzed 11/19/04 <br /> Methyl tert-butyl ether 436 5 0 µg/kg 500 87 2 60 140 <br /> Logateluene-d8 475 500 95 0 60-140 <br /> LCS Dup(CN09036-BSD1) Prepared&Analyzed 11/19/04 <br /> Methyl ten-butyl ether 410 50 µg/kg 500 820 60-140 6 15 30 <br /> Surrogate Toluene-d8 473 11500 94 6 60-140 <br /> Matrix Spike(CN09036-MSI) Source CNK0645-04 Prepared&Analyzed 11/19/04 <br /> Methyl tertbutyl ether 540 5 0 µg/kg Soo ND 108 60-140 <br /> Surrogate Toluene-d8 493 500 98 6 60-140 <br /> Matrix Spike Dup(CN09036-MSD1) Source CNK0645-04 Prepared&Analyzed 11/19/04 <br /> C Methyl tert-butyl ether 520 5 0 µg/kg 50 0 ND 104 60-140 377 30 <br /> Surrogate Toluene-d8 477 Soo 95 4 60-140 <br /> I <br /> ICA DOHS FLAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www californialab.com 916-638-7301 Fax 916-638-4510 <br />