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i CALIFORNIA LABORATORY SERVICES <br /> Page 7 of 8 11/17/05 14 15 <br /> APEX Envirotech Inc -Gold River Project Flag City New West#1003 <br /> 11244 Pyrites Way Project Number NWP01 004-RR CLS Work Order# COK0489 <br /> Gold River,CA 95670 Project Manager Jennifer Worsley COC# <br /> Volatile Organic Compounds by EPA Method 8260H- Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch C008671 -EPA 5030 Water M5 <br /> Blank(CO08671-BLKI) _ _ _ _ Prepared&Analyzed 11/14/05 <br /> Di-isopropyl ether ND 050 pg/L <br /> Ethyl tert-butyl ether ND 050 <br /> Methyl tent-butyl ether ND 0 50 <br /> tett Amyl methyl ether ND 0 50 " <br /> Tert butyl alcohol ND 50 <br /> Benzene ND 050 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 1 0 <br /> Surrogate Toluene-d8 989 100 _ 98 9 72-125 <br /> OCS(CO08671-BSI) __ Prepared&Analyzed-11/14/05 <br /> Methyl tett-butyl ether 22 9 050 µg/L 200 114 52-130 <br /> Surrogate Toluene-d8 103 100 103 72-125 <br /> LCS Dup(CO08671-BSD1) Prepared&Analyzed 11/14/05 <br /> Methyl tert-butyl ether 22 4 050 pg/L 200 112 52-130 221 30 <br /> Surrogate Toluene-d8 983 100 983 72-125 T T <br /> 40 <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 www califormalab com 916-638-7301 Fax 916-638-4510 <br />