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CALIFORNIA LABORATORY SERVICES <br /> 08/11/05 13 47 <br /> APEX Envirotech Inc -Gold River Piojccl New West Petroleutn CLS Work Order# COH0133 <br /> 11244 Pyrites Way Project NnMbO NWPOI 004 1V1 COC# 53577 <br /> Gold River,CA 95670 Project Ivl ina.--r Jennifer Worsley <br /> Volatile Organic Compounds Ly EPA Method 8260B - Quality Control <br /> Reportmg Spike Source %REC RPD <br /> Analyte Result Limit Unus Level Result %REC Limits RPD Limit Notes <br /> Batch C005878- EPA 5030 Soil MS <br /> Blank(CO05878-BLKI) Prep iiod & \nalyzed 08/04/05 <br /> Di-isopropyl ether — — - ND- - 50- lig/k- _- - <br /> Ethyl Cert-butyl ether ND 50 <br /> Methyl tert-butyl ether ND 5() <br /> tert-Amyl methyl ether ND 50 <br /> Tert-butyl alcohol ND 50 <br /> Surrogate Toluene-d8 496 500 992 60-140 <br /> LCS(CO05878-BSI) PiLp Bred&Analyzed 08/04/05 <br /> Methyl tent-butyl ether 449 50 Mg/kg 500 89 8 60-140 <br /> Surrogate Toluene-d8 482 50 0 964 60-140 <br /> &CS Dup(CO05878-BSD1) Pica,ii ed i -Nnalyzed 08/04/05 <br /> Methyl tent-butyl ether 45 3 50 t'glk 2 -)00 906 60-140 0 887 30 <br /> Surrogate Toluene d8 481 500 96 2 60-140 <br /> Matrix Spike(CO05878-MSI) _ _ Soutce C0110135-02 Prep ired Lvi Analyzed 08104.105 <br /> Methyl tert-butyl ether 42 5 50 pd/k, 0 VD 85 0 60-140 <br /> Surrogate Toluene-d8 498 5110 996 60-140 <br /> Matrix Spike Dup(CO05878-MSD1) Source C0110135-02 Prepaied& Analyzed 08/04/05 <br /> Methyl tert-butyl ether 42 7 5 0 ti_'kg 0 "I'D 85 4 60-140 0 469 30 <br /> Surrogate Toluene-d8 488 u uT 976 60-140 <br /> CA DDHS FLAP Acctt-llit ition/Registiahnii Number 1233 <br /> 3249 Fitzgerald Road Rancho Cot lova, CA 95742 IN IN%% L,tlltol ill d it, tom 916-638-7301 Fax 916-6384510 <br />