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1 <br /> CALIFORNIA LABORATORY SERVICES ' <br /> 08/20/04 14 12 ' <br /> ENSR-Sacramento Project Former Unocal 5098, 5606��c� re��o� ,CNH0556 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-293-100 COC#! <br /> Sacramento,CA 95827-2508 Project Manager Ben I Henmgburg <br /> Metals by EPA 6000/7000 Series Methods - Quality Control <br /> 1 <br /> - Reporting Spike Source %REC RPD <br /> [Analyte Result Lmut Units Level Result %REC Limits RPD Lunt Notes <br /> Batch CN06375-EPA 3050B <br /> Blank(CN06375-BLKI) Prepared&Analyzed 08/18/04 ' <br /> Lead ND 25 mg/kg <br /> LCS(CN06375-BS1) Prepared&Analyzed 08/18/04 <br /> Lead 23 1 25 mg/kg 250 924 75-125 <br /> LCS Dup(CN06375-BSD1) Prepared&Analyzed 08/18/04 <br /> Lead 238 2-5 mg/kg 250 952 75-125 299 25 <br /> Matrix Spike(CN06375-MSI) Source CNH05%-01 Prepared&Analyzed 08/18/04 <br /> Lead 256 25 mg/kg 250 36 880 75-125 <br /> Matrix Spike Dup(CN06375-MSD1) Source CNH0556-01 Prepared&Analyzed 08/18/04 <br /> Lead 264 25 mg/kg 250 36 912 75-125 308 30 <br /> 1 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www caliiornialab com 916-638-7301 Fax 916-638-4510 ' <br />