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North State Environmental Laboratory CA FLAP# „�: <br /> 90 South Spruce Avenue Suite V • South San Francisco CA 94080 • (650) 266-4563 • FAX (650) 266-4560 <br /> C E R T I F I C A T E Q F A N A L Y S I S <br /> Job Dumber 00-0254 Date Sampled 02/23/2000 <br /> Client Western Geo-Engineers Date Analyzed 02/28/2000 <br /> Pro]ect 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 1D MW1 MW2 MW3 <br /> Matrix WATER WATER WATER <br /> Analyte ug/L ug/L ug/L <br /> Ethanol ND<100 ND<100 ND<100 <br /> methyl-t-Butyl Ether 11 ND<1 a <br /> Di-isopropyl Ether ND<1 ND<l ND<1 <br /> tertiary Butyl Alcohol ND<50 ND<50 ND<50 <br /> Ethyl-t-Butyl Ether ND<1 ND<1 ND<l <br /> t-Amyl Methyl Ether ND<1 ND<1 ND<1 <br /> St]R-Dibromofluoromethane 1138 Rec 1108 Rec 119% Rec <br /> 0R-Toluene-d8 1108 Rec 114% Rec 1188 Rec <br /> R-4-Bromofluorobenzene 1148 Rec 1086 Rec 1168 Rec <br /> i <br /> Page 1 Of 2 <br />