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CALIFORNIA LABORATORY SERVICES <br />' 00p812010414 12 <br /> ENSR-Sacramento Protect Fortner Unocal 5098,5606 ffi'*or�e6co,fek,W" NH0556 <br />' 10411 Old Placerville Rd,Suite 210 Project Number 06940-293-100 COC# <br /> Sacramento,CA 95827-2508 Project Manager Ben I Heningburg <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 Lunt Notes <br /> Batch CN06357-Volatiles <br /> Blank(CN06357-BLKI) Prepared 08/17/04 Analyzed 08/18/04 <br />' DI-isopropyl ether ND 50 µg/kg <br /> Ethyl tert-butyl ether ND 50 <br /> Methyl tent-butyl ether ND 50 " <br />' tert-Amyl methyl ether ND 50 <br /> Tert-butyl alcohol ND 50 <br /> 1,2-Dibromoethane(EDB) ND 50 " <br />' 1,2-Dichloroethane ND 50 <br /> Benzene ND 50 <br /> Toluene ND 50 " <br />' X&ncs(total) ND 10 " <br /> gate Toluene-d8 448 500 896 60-140 <br /> LCS(CN06357-BSI) Prepared 08/17/04 Analyzed 08/18/04 <br />' Methyl tert-butyl ether 428 50 µgAg 500 856 60-140 <br /> Surrogate Toluene-d8 470 500 940 60-140 <br /> LCS Dup(CN06357-BSD1) Prepared 08/17/04 Analyzed 08/18/04 <br />' Methyl tert-butyl ether 430 50 µglkg 500 860 60-140 0 466 30 <br /> Surrogate Toluene-d8 429 11500 858 60-140 <br />' Matrix Spike(CN06357-MSI) Source CNHO555-41 Prepared 08/17/04 Analyzed 08/18/04 <br /> Methyl tert-butyl ether 302 50 µg/kg 500 ND 604 60-140 <br /> Surrogate Toluene-d8 447 " 500 894 60-140 <br />' Matrix Spike Dup(CN06357-MSDI) Source CNH055"] Prepared 08/17/04 Analyzed 08/18/04 <br /> Methyl ten-butyl ether 326 50 µglkg 500 ND 652 60-140 764 30 <br /> Surrogate Toluene-d8 436 500 872 60-140 <br /> 1 <br /> • <br /> r <br /> CA DOHS FLAP Accreditation/Registration Number 1233 <br />' 3249 Fitzgerald Road Rancho Cordova, CA 95742 www callfornialab coin 916-638-7301 Fax 916-638-4510 <br />