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COLUMBIA ANALYTICAL SERVICES INC. <br /> Analytical Results <br /> Client: Shaw Environmental&Infrastructure,Inc Service Request: L0600154 <br /> Project: North County Landfill,San Joaquin County/791288(Ground Water) Date Collected: NA <br /> Sample Matrix: Water Date Received: NA <br /> Volatile Organic Compounds <br /> Sample Name: Method Blank Units: ug/L <br /> Lab Code: LWG06004194 Basis: NA <br /> Extraction Method: EPA 5030B Level: Low <br /> Analysis Method: 8260B <br /> Dilution Date Date Extraction <br /> Analyte Name Result Q PQL MDL Factor Extracted Analyzed Lot Note <br /> trans-1,3-Dichloropropene ND U 0.50 0.11 1 02/01/06 02/01/06 LWG06004197 <br /> trans-l,4-Dichloro-2-butene ND U 20 0.86 1 02/01/06 02/01/06LWG0600419 <br /> Trichloroethene(TCE) ND U 0.50 0.36 1 02/01/06 02/01/06 LWG0600419 <br /> Trichlorofluoromethane ND U 1.0 0.47 1 02/01/06 02/01/06 LWG0600419 <br /> Vinyl Acetate ND U 10 2.2 1 02/01/06 02/01/06 LWG0600419 <br /> Vinyl Chloride ND U 0.50 0.27 1 02/01/06 02/01/06 LWG0600419 <br /> Control Date <br /> Surrogate Name %Rec Limits Analyzed Note <br /> Dibromofluoromethane 101 77-126 02/01/06 Acceptable <br /> Toluene-d8 102 77-119 02/01/06 Acceptable <br /> 4-Bromofluorobenzene 94 74-121 02/01/06 Acceptable <br /> Comments: <br /> 28 <br /> PrintM- mm)i,)nn4 i c-no-i7 F....., 1 A n.....,.,:- .,-- <br />