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' CALIFORNIA LABORATORY SERVICES <br /> 07/29/04 14 04 <br />' ENSR-Sacramento Project Former Unocal 5098,5606 ppt�c ����qA e ggto kt <br /> 3 CL�Worvk Oi-�er�'RG0238 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-293-120 COC# 1,2 <br /> Sacramento,CA 95827-2508 Project Manager Ben I Henmgburg <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 Soil 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 /> Surrogate Toluene-d8 00476 00500 952 60-140 <br /> LCS(CN05392-BSI) Prepared&Analyzed 07/09/04 <br /> Methyl tert-butyl ether 00483 00050 mg/kg 00500 96 6 60-140 <br /> Surrogate Toluene-d8 00454 00500 908 60-140 <br /> ftS Dup(CN05392-BSDI) Prepared& Analyzed 07/09/04 <br /> Methyl tert-butyl ether 00427 00050 mg/kg 00500 854 60-140 12 3 30 <br />' Surrogate Toluene-d8 00481 " 00500 962 60-140 <br /> Matrix Spike(CN05392-MSI) Source CNCO206-07 Prepared& Analyzed 07/09/04 <br /> Methyl tent-butyl ether 00359 00050 mglkg 00500 ND 718 60-140 <br /> Surrogate Toluene-d8 00372 " 00500 744 60-140 <br /> Matrix Spike Dup(CN05392-MSDI) Source CNG0206-07 Prepared&Analyzed 07/09/04 <br /> Methyl tert-butyl ether 00332 00050 mg/kg 0 0500 ND 664 60-140 781 30 <br /> Surrogate Toluene-d8 00408 00500 816 60-140 <br /> 1 <br /> CA DONS ELAPAccred�tat�on/ReDtstratlonNu�mber33 „ '.'. - <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www caltforntalab com 916-638-7301 Fax 916-638-4510 <br />