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North State Environmental Laboratory CA FLAP# 1753 <br /> 90 South Spruce A%enue Suite V • South San Francisco CA 94080 • (650) 266-4563 • FAX (650) 266-4560 <br /> CERTIFICATE OF ANALYSIS <br /> Job Number 00-0254 Date Sampled 02/23/2000 <br /> Client Western Geo-Engineers Date Analyzed 02/28/2000 <br /> Project ARC Pump & Weld Date Reported 03/03/2000 <br /> Volatile Organics by GC/MS Method 8260 <br /> Laboratory Number 00-0254-01 00-0254-02 00-0254-03 <br /> Client ID MW1 MW2 -W3 <br /> Matrix WATER WATER RATER <br /> Analyte ug/L ug/L ig/L <br /> Bromochloromethane ND<5 ND<5 14D<5 <br /> Dichlorodifluoromethane ND<5 ND<5 %0<5 <br /> Chloromethane ND<5 ND<5 ND<5 <br /> Vinyl Chloride Np<5 ND<5 ND<5 <br /> Bromomethane ND<5 ND<5 %D<5 <br /> Chloroethane ND<5 ND<5 ND<5 <br /> Trichlorofluoromethane ND<1 ND<1 ',D<l <br /> 01-Dichloroethene ND<l ND<1 ND<1 <br /> cetone N0<5C ND<50 ND<50 <br /> Trichlorotrzfluorcethane ND<1 ND<1 ND<1 <br /> Methylene Chloride ND<100 ND<100 ND<100 <br /> t-1,2-Dichloroethene ND<1 ND<1 ND<1 <br /> Methyl-t-butyl Ether 11 ND<l B <br /> 1,1-Dichlcroethane ND<1 ND<1 ND<1 <br /> 2,2-Drchloropropane ND<1 ND<1 ND<1 <br /> cis-1,2-Dichloroethene ND<1 ND<1 ND<1 <br /> 2-Butanone ND<10 ND<10 ND<10 <br /> Chloroform ND<1 ND<1 ND<1 <br /> 1,1,1-Trichloroethane ND<1 ND<l ND<1 <br /> Carbon Tetrachloride ND<1 ND<l ND<1 <br /> 1, 1-Dichloropropene ND<1 ND<l ND<1 <br /> Benzene 3700 1300 2600 <br /> 1,2-Drchloroet'iane 21 29 37 <br /> Tracnloroethene ND<1 ND<1 ND<1 <br /> 1,2-Dichloropropane ND<1 ND<1 ND<1 <br /> Dibromomethane ND<1 ND<1 ND<l <br /> Bromodichloromethane ND<l ND<1 ND<1 <br /> trans-1,3-Drchloropropene ND<l ND<1 ND<1 <br /> 4-Methyl-2-Pentanone ND<10 ND<10 ND<10 <br /> Toluene 14 30 17 <br /> cis-1,3-Dichloropropene ND<1 ND<1 ND<l <br /> 1,1,2-Trichloroethane ND<1 ND<1 ND<l <br /> Tetrachloroethene ND<1 ND<1 ND<1 <br /> ,3-Dichloropropane ND<1 ND<1 ND<1 <br /> -Hexanone ND<10 ND<10 ND<10 <br /> Dibromochloromethane ND<1 N0<1 ND<1 <br /> Page 1 Of 4 <br />