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CALIFORNIA LABORATORY SERVICES <br /> 05/18/12 12:02 <br /> Environmental Cost Management,Inc. Project: 5725 Hall 2009 CLS Work Order#•CVE0380 <br /> 3525 Hyland Ave.,Suite 200 Project Number: [none] COC#: 130588 <br /> Costa Mesa CA,92626 Project Manager: Binayak Acharia <br /> Conventional Chemistry Parameters by APHA/EPA Methods - Quality Control <br /> CLS Labs <br /> Reporting Spike Source %REC RPD <br /> Analyte Result MDL Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch CV03055-General Prep <br /> Blank(CV03055-BLKI) Prepared&Analyzed:05/09/12 <br /> Nitrate as N ND 0.053 0.50 mg/L <br /> LCS(CV03055-BS1) Prepared&Analyzed:05/09/12 <br /> Nitrate as N 0.423 0.053 0.50 mg/L 0.451 94 80-120 J <br /> LCS Dup(CV03055-BSD1) Prepared&Analyzed:05/09/12 <br /> Nitrate as N 0.431 0.053 0.50 mg/L 0.451 96 80-120 2 20 J <br /> Matrix Spike(CV03055-MS1) Source:CVE0380-01 Prepared&Analyzed:05/09/12 <br /> Nitrate as N 4.24 0.053 0.50 mg/L 0.451 3.94 65 80-120 QM-4X <br /> Matrix Spike Dup(CV03055-MSD1) Source:CVE0380-01 Prepared&Analyzed:05/09/12 <br /> Nitrate as N 4.24 0.053 0.50 mg/L 0.451 3.94 65 80-120 0.05 20 QM-4X <br /> Batch CV03068-General Preparation <br /> Blank(CV03068-BLKI) Prepared:05/09/12 Analyzed:05/10/12 <br /> Total Dissolved Solids ND 10 10 mg/L <br /> Duplicate(CV03068-DUPI) Source:CVE0354-01 Prepared:05/09/12 Analyzed:05/10/12 <br /> Total Dissolved Solids 395 10 10 mg/L 393 0.5 20 <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 />