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0 CALIFORNIA LABORATORY SERVICES <br /> Page 6 of 7 11/16/05 15 16 <br /> APEX Envirotech Inc -Gold River Project Flag City New West#1003 <br /> 11244 Pyrites Way Project Number NWPOI 004 CLS Work Order# COK0377 <br /> Gold River,CA 95670 Project Manager Jennifer Worsley COC# <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 C008324- EPA 5030 Water NIS <br /> Blank(CO08324-BLKI) Prepared &Analyzed 11/11/05 <br /> Di isopropyl ether ND 050 1ig/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 so " <br /> i <br /> Surrogate Toluene-d8 961 100 961 71-115 <br /> LCS(CO08324-BSI) Prepared&Analyzed 11/11/05 <br /> Methyl tert-butyl ether 217 050 pg/L 200 108 52-130 <br /> Surrogate Toluene-0 100 100 100 71-125 <br /> rCS Dup(CO08324-BSDi) Prepared&Analyzed 11/11/05 <br /> Methyl cert-butyl ether 203 050 pg/L 200 102 52-130 667 30 <br /> Surrogate Toluene d8 102 100 101 71-115 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www californialab com 916-638-7301 Fax 916-638-4510 <br />