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CALIFORNIA LABORATORY VICES <br /> Page 15 of 28 <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 /> Conventional Chemistry Parameters by PA Methods- Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch CP05425- General Pre <br /> Blank(CP05425-BLKI) Prepared&Analyzed:07/20/06 <br /> Bromide ND 0.10 mg/L <br /> Fluoride ND 0.10 " <br /> Nitrate as N ND 0.50 " <br /> Nitrate/Nitrite as N ND 400 µg/1 <br /> LCS(CP05425-BSI) Prepared&Analyzed:07/20/06 <br /> Fluoride 2.09 0.10 mg/L 2.00 <br /> Bromide 104 80-120 20 <br /> 1.98 0.10 2.00 99.0 80-120 <br /> Nitrate/Nitrite as N 1080 400 20 <br /> Nitrate as N µ� 1060 102 80-120 20 <br /> 0.492 0.50 mg/L 0.451 109 80-120 20 <br /> LCS Dup(CP05425-BSDI) Prepared&Analyzed:07/20/06 <br /> Bromide 1.99 0.10 mg/L 2.00 <br /> 99.5 80-120 0.504 20 <br /> Fluoride 2.10 0.10 2.00 <br /> 105 80-120 0.477 20 <br /> Nitrate/Nitrite as N 1080 400 µg/L 1060 <br /> ]OZ 80-120 0.00 20 <br /> Nitrate as N 0.492 0.50 mg/L 0.451 <br /> 109 80-120 0.00 20 <br /> Matrix Spike(CP05425-MSI) Source:CPG0645-01 Prepared&Analyzed:07/20/06 <br /> Bromide 2.07 0.10 m <br /> g/L 2.00 ND 104 75-125 25 <br /> Fluoride 2.13 0.10 2.00 0.10 102 75-125 25 <br /> Nitrate/Nitrite as N 1510 400 µg/L 1060 550 90.6 75-125 <br /> 25 <br /> Nitrate as N <br /> 0.914 0.50 mg/L 0.451 0.55 80.7 75-125 25 <br /> Matrix Spike Dup(CP05425-MSD1) Source:CPG0645-01 Prepared:07/20/06 Analyzed:07/21/06 <br /> Bromide 2.08 0.10 mg/L 2.00 ND 104 75-125 0.482 25 <br /> Fluoride 2.14 0.10 2.00 0.10 102 75-125 0.468 25 <br /> Nitrate/Nitrite as N 1510 400 µg/L 1060 550 90.6 75-125 0.00 25 <br /> Nitrate as N 0.913 0.50 mg/L 0.451 0.55 80.5 75-125 0.109 25 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 WWW.Californialab.com 916-635-7301 Fag: 916-638-4510 <br />