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C <br /> CALIFORNIA LABORATORY- SERVICES <br /> 07/28/10 13:18 <br /> AECOM,Inc.dba AECOM Environment Project: Stockton Scavenger, 1240 Navy Drive, Stockton,CA <br /> 10461 Old Placerville Rd.,Suite 170 Project Number: 60157454.3 CLS Work Order#: CTG0988 <br /> Sacramento CA,95827-2508 Project Manager: Chris Drabandt COC#: <br /> Metals by EPA 6000/7000,Series Methods - Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch CT05438-EPA 3050B <br /> Blank(CT05438-BLKI) Prepared&Analyzed:07/27/10 <br /> I'I Lead ND 0.50 mg/kg <br /> LCS(CT05438-BSI) Prepared&Analyzed:07/27/10 <br /> Lead 4.91 2.0 mg/kg 5.00 98 75-125 <br /> LCS Dup(CT05438-BSD1) Prepared&Analyzed:07/27/10 <br /> Lead 4.85 2.0 mg/kg 5.00 97 75-125 1 25 <br /> Matrix Spike(CT05438-MSI) Source:CTG0988-06 Prepared&Analyzed:07/27/10 <br /> Lead 11.7 2.0 mg/kg 5.00 6.35 106 75-125 <br /> Matrix Spike Dup(CT05438-MSD1) Source: CTG0988-06 Prepared&Analyzed:07/27/10 <br /> Lead 12.5 2.0 mg/kg 5.00 6.35 123 75-125 7 30 <br /> kr` <br /> �r <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 www.californialab.com 916-638-7301 Fax: 916-638-4510 <br />