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CALIFORNIA LABORATORY SERVICES <br /> Page 7 of 8 11/28/05 10 20 <br /> APEX Envirotech Inc -Gold River Project Flag City New West#1003 <br /> 11244 Pyrites Way Project Number NWPO1 004 CLS Work Order# COK0632 <br /> Gold River,CA 95670 Project Manager Jennifer Worsley <br /> Volatile Organic Compounds by EPA Method 8260B- Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch C008822-EPA 5030 Water MS <br /> Blank(CO08822-BLKI) Prepared&Analyzed 1 1118105 <br /> Di-tsopropyl ether ND 050 pg/L <br /> Ethyl tert-butyl ether ND 050 <br /> Methyl tert-butyl ether ND 050 " <br /> tert Amyl methyl ether ND 050 " <br /> Tert-butyl alcohol ND 50 " <br /> Surrogate Toluene-d8 975 100 975 72-125 <br /> LCS(CO08822-BS1) Prepared&Analyzed 11/18/05 <br /> Methyl tert-butyl ether 213 050 pg/L 200 106 52-130 <br /> 0agole Toluene-d8 103 100 103 71-125 <br /> FCS Dup(CO08822-BSD1) Prepared&Analyzed 11/18/05 <br /> Methyl Cert-butyl ether 21 0 050 gg/L 200 105 52-130 1 42 30 <br /> Surrogate Toluene d8 996 100 996 71-125 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 www caltformalab com 916-638-7301 Fax. 916-638-4510 <br />