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CALIFORNIA LABORATORY SERVICES <br /> Page 8 of 11 12/09/05 12 33 <br /> APEX Envirotech Inc -Gold River Protect Flag City New West#1003 <br /> 11244 Pyrites Way Project Number NWP01 004 CLS Work Order# COL0194 <br /> Gold River,CA 95670 Project Manager Jennifer Worslcy <br /> Conventional Chemistry Parameters by APHA/EPA Methods - Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch C009257-6010AINo Digestion _ <br /> LCS(CO09257-BSI) Prepared&Analyzed 12/07/05 <br /> Calcium 11 9 1 0 mg/L loo 119 80-120 <br /> Magnesium 102 1 0 100 102 80-120 <br /> Potassium 982 1 0 100 982 80-120 <br /> Sodium 100 10 100 100 80-120 <br /> LCS Dup(CO09257-BSDI) Prepared&Analyzed 12/07/05 <br /> Calcium 109 10 mg/L 100 109 80-124 877 20 <br /> Magnesium 102 10 100 102 80-120 000 20 <br /> Potassium 104 10 100 104 80-120 574 20 <br /> Sodium 106 10 100 106 80-120 5 83 20 <br /> atrix Spike(CO09257-MSI) Source COL0194-01 Prepared&Analyzed 12/07/05 <br /> alcium 644 10 mg/L too 56 840 75-125 <br /> Magnesium 375 10 too 28 950 75-125 <br /> Potassium 139 10 100 22 117 75-125 <br /> Sodium 146 10 100 140 600 75-125 QM-4X <br /> Matrix Spike Dup(CO09257-MSDI) Source COL0194-01 Prepared&Analyzed 12/07/05 <br /> Calcium 646 10 mg/L 100 56 860 75-125 0 310 25 <br /> Magnesium 376 10 100 28 960 75-125 0 266 25 <br /> Potassium 140 10 100 22 118 75-125 0 717 25 <br /> Sodium 146 10 100 140 600 75-125 000 25 QM-4X <br /> Batch C009258-General Preparation <br /> Blank(CO09258-BLKI) Prepared 12/07/05 Analyzed 12/08/05 <br /> Total Dissolved Solids ND 10 mg/L <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www californlalab com 916-638-7301 Fax 916-638-4510 <br />