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} r t } <br /> CALIF01UNIA LABORATORYVICES <br /> Page 26 of 26 <br /> 07/27/06 10:19 <br /> ENGEO-Tracy Project: North Lathrop Properties <br /> 2880 N.Tracy Blvd Ste#3 Project Number: 5044.5.001.01 CLS Work Order#:CPG0655 <br /> Tracy,CA 95376 Project Manager: Zac Crawford COC#:69131 <br /> Metals (Dissolved) 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 CP05476-6010AINo Digestion <br /> Blank(CP05476-BLKI) Prepared&Analyzed:07/21/06 <br /> Calcium ND 1.0 mg/L <br /> Magnesium ND 10 „ <br /> Potassium ND 1.0 " <br /> Sodium ND " <br /> 1.0 <br /> LCS(CP05476-BSI) Prepared&Analyzed:07/21/06 <br /> Calcium 9.77 1.0 mg/L 10.0 97.7 80-120 20 <br /> Magnesium 9.15 1.0 10.0 91.5 80-120 20 <br /> Potassium 8.92 1.0 10.0 89.2 80-120 20 <br /> Sodium 9.05 1.0 10.0 90.5 80-120 <br /> 20 <br /> LCS 1Dup(CP05476-BSDI) Prepared&Analyzed:07/21/06 <br /> Calcium 9.75 L0 mg/L 10.0 97.5 80-120 0.205 20 <br /> Magnesium 9.16 1.0 10.0 91.6 80-120 0.109 20 <br /> Potassium 9.18 1.0 10.0 91.8 80-120 2.87 20 <br /> Sodium 9.20 1.0 10.0 92.0 80-120 1.64 20 <br /> Matrix Spike(CP05476-MSI) Source:CPG0651-01 Prepared&Analyzed:07/21/06 <br /> Calcium 88.0 1.0 mgt 10.0 80 80.0 75-125 25 <br /> Magnesium 29.3 1.0 10.0 20 93.0 75-125 25 <br /> Potassium 11.7 1.0 " 10.0 2.2 95.0 75-125 25 <br /> Sodium 61.6 1.0 10.0 53 86.0 75-125 25 <br /> Matrix Spike Dup(CP05476-MSD1) Source:CPGO651-01 Prepared,&Analyzed:07/21/06 <br /> Calcium 89.8 1.0 mg/L 10.0 80 98.0 75-125 2.02 25 <br /> Magnesium 31.0 1.0 10.0 20 110 75-125 5.64 25 <br /> Potassium 13.4 1.0 10.0 2.2 112 75-125 13.5 25 <br /> Sodium 63.7 1.0 10.0 53 107 75-125 3.35 25 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 w,californialab.com 916-638-7301 Fax: 916-638-4510 <br />