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CALIFORNIA LABORATORY SERVICES <br /> 07/29/04 14 05 <br /> ENSR-Sacramento Project Former UAocal 5098,5606 c WoA e gto kt p, <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-293-120 COC# 1.O 34,410�NG0206 <br /> Sacramento,CA 95827-2508 Project Manager Ben I Heningburg COC# 41034,41035 <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 Limit Notes <br /> Batch CN05392-EPA 5030 Sod MS <br /> Blank(CN05392-BLKI) Prepared&Analyzed 07/09/04 ' <br /> Methyl tert-butyl ether ND 00050 mg/kg <br /> Benzene ND 00050 " <br /> Ethylbenzene ND 00050 <br /> Toluene ND 00050 " <br /> Xylenes(total) ND 0 010 " <br /> Surrogale Toluene-d8 00476 00500 952 60-140 <br /> LCS(CN05392-BSI) Prepared&Analyzed 07/09/04 <br /> Methyl tort-butyl ether 00483 00050 mglkg 00500 966 60-140 <br /> Surrogate Toluene-d8 00454 00500 908 60-140 <br /> LCS Dup(CN05392-ESDI) Prepared&Analyzed 07/09/04 <br /> Methyl tert-butyl ether 00427 00050 mg/kg 00500 854 60-140 123 30 <br /> Surrogate Toluene-d8 00481 " 00500 962 60-140 <br /> Matrix Spike(CN05392-MS1) Source-CNCO206=07TPrepared&Analyzed 07/09/04 <br /> Methyl tert-butyl ether 00359 00050 mg/kg 00500 ND 71 8 60-140 <br /> Surrogate Toluene-d8— -00372 -"_- _ 0 0500 - 74 4 -�-60-140- _ - - <br /> Matrix Spike Dup(CN05392-MSDI) _ Source CNG0206-07 _.Prepared&Analyzed 07/09/04 <br /> Methyl tert-butyl ether 00332 0 0050 mg/kg 00500 ND 664 60-140 781 30 <br /> Surrogate Toluene-d8 00408 00500 816 60-140 <br /> CA DOHS ELAP AccredltationAegistratton Number 1233 ' <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 www calhfornialab com 916-638-7301 Fax 916-638-4510 <br />