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CALIFORNIA LABORATORY SERVICES <br /> 07/11/05 12 21 <br /> APEX Envirotech Inc -Gold River Project Cohn Property CLS Work Order 01 COG0009 <br /> 11244 Pyrites Way Project Number C01-101001 COC# <br /> Gold River,CA 95670 Project Manager Drew Van Allen <br /> GasBTEX by GC PID/FID - Quality Control <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch C005109-EPA 5030 Water GC <br /> Matrix Spike Dup(CO05109-MSD1) Source COG0009-12 Prepared&Analyzed 07/06/05 <br /> Benzene 53 3 050 pg/L 200 270 NR 60-140 1 67 30 QM-01 <br /> Toluene 266 050 200 50 108 60-140 1 49 30 <br /> Ethylbenzene 21 3 050 200 1 4 995 60-140 232 30 <br /> Xylenes(total) 662 10 600 2 8 106 60-140 268 30 <br /> Surrogate o-Chlorotoluene(BTEX) 197 200 985 65-135 <br /> Batch C005119-EPA 5030 Water GC <br /> Blank(CO05119-BLKI) Prepared&Analyzed 07/06/05 <br /> Gasoline ND 50 pg/L <br /> Onzene ND 050 <br /> luene ND 050 " <br /> Lthylbenzene ND 050 " <br /> Xylenes(total) ND 1 0 " <br /> i <br /> Surrogate o-Chlorotoluene(BTEX) 192 200 960 65-135 <br /> Surrogate o-Chlororoluene(Gas) 189 200 945 65-135 <br /> LCS(CO05119-BSI) Prepared&Analyzed 07/06/05 <br /> Gasoline 433 50 pg/L 500 866 65-135 <br /> Surrogate o-Chlororoluene(Gas) 19 7 200 98 5 65-135 <br /> LCS Dup(CO05119-BSD1) Prepared&Analyzed 07/06/05 <br /> Gasoline 432 50 pg/L 500 864 65-135 0231 30 <br /> Surrogate o-Chlorotoluene(Gas) 194 200 970 65-135 <br /> Batch C005122-EPA 5030 Water GC <br /> Blank(CO05122-BLKI) Prepared&Analyzed 07/06/05 <br /> Gasoline ND 50 pg/L, <br /> Benzene ND 050 " <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " <br /> CA DOHS ELAP Accreditation/Registration Number 1233 <br /> 3249 Fitzgerald Road Rancho Cordova, CA 95742 www.californlalab corn 916-638-7301 Fax 916-638-4510 <br />