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CALIFORNIA LABORATORY SERVICES <br /> Page 7 of 11 12/09/05 12 33 <br /> APEX Envirotech Inc -Gold River Project Flag City New West#1003 <br /> 11244 Pyrites Way Project Number NWPO1 004 CLS Work Order# COL0194 <br /> Gold River,CA 95670 Project Manager Jennifer Worsley <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 [Yates <br /> Batch C009212-General Pre oration <br /> Blank(CO09212-BLK1) Prepared&Analyzed 12/06/05 <br /> Methylene Blue Active Substances ND 010 mg/L <br /> LCS(CO09212-BSI) Prepared&Analyzed 12/06/05 <br /> Methylene Blue Active Substances 0 516 0 10 mg/L 0 500 103 80-120 <br /> LCS Dup(CO09212-BSD1) Prepared&Analyzed 12/06/05 <br /> Methylene Blue Active Substances 0 509 0 10 mg/L. 0 500 102 80-120 l 37 20 <br /> Matrix Spike(CO09212-MSI) Source COL0182-01 Prepared&Analyzed 12/06/05 <br /> Methylene Blue Active Substances 0 509 010 mg/L 0 500 ND 102 75-125 <br /> Matrix Spike Dup(CO09212-MSD1) Source COL0182-01 Prepared&Analyzed 12/06/05 <br /> ethylene Blue Active Substances 0 513 0 10 mg/L 0 500 ND 103 75-125 0 783 25 <br /> Batch C009248-General Preparation <br /> Blank(CO09248-BLKl) Prepared&Analyzed 12/07/05 <br /> Specific Conductance(EC) ND 10 µmhos/cm <br /> Batch C009257-601OA/No Digestion <br /> Blank(CO09257-BLKI) Prepared&Analyzed 12/07/05 <br /> Calcium ND l0 mg/L <br /> Magnesium ND IO " <br /> Potassium ND 10 " <br /> Sodium ND 10 " <br /> Hardness as CaCO3 ND 10 " <br /> CA DOHS FLAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 www californialab com 916-638-7301 Fax 916-638-4510 <br />