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CALIFORNIA LABORATORY SERVICES <br /> 08/19/05 11 13 <br /> APEX Envirotech Inc -Gold River Project New West Petroleum CLS Work Ordor# COH0494 <br /> 11244 Pyrites Way Project Number NWP01 004 COC# 53578 <br /> Gold River,CA 95670 Project Manager Jennifer Worsley <br /> Metals by EPA 6000/7000 Series Methods - Quality Control <br /> Reporting Spike Source %RE~C RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch C006169- EPA 3050B <br /> Blank(CO06169-BLKI) Prepared&Analyzed 08/17/05 <br /> Lead ND 2 5 mg/kg <br /> LCS(CO06169-BSI) Prepared&Analyzed 08/17/05 <br /> Lead 23 6 2 5 mg/kg 25 0 94 4 75-125 <br /> LCS Dup(CO06169-BSD1) Prepared&Analyzed 08/17/05 <br /> Lead 235 2 5 mg/kg 25 0 94 0 75 125 0 425 25 <br /> Matrix Spilie(COO 6169-NISI) Source C0110582-01 Prepared&Analyzed 08/17/05 <br /> Lead 252 25 mg/kg 250 3 2 88 0 75-125 <br /> Matrix Spike Dup(CO06169-MSDI) Source COH0582-01 Prepared&Analyzed 08/17/05 <br /> Le ad <br /> 250 2) mg/kg 250 32 872 75 125 0 797 30 <br /> CA 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 />