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COLUMBIA ANALYTICAL SERVICES,INC. <br /> Analytical Results <br /> rClient: Shaw Environmental&Infrastructure,Inc Service Request: P0700322 <br /> Project: Harney Lane Landfill,San Joaquin County/124593(Ground Water) Date Collected: 04/02/2007 <br /> Sample Matrix: Water Date Received: 04/03/2007 <br /> Volatile Organic Compounds <br /> Sample Name: MW-4 Units: ug/L <br /> Lab Code: P0700322-004 Basis: NA <br /> Extraction Method: METHOD Level: Low <br /> Analysis Method: 624M <br /> Dilution Date Date Extraction <br /> Analyte Name Result Q PQL MDL Factor Extracted Analyzed Lot Note <br /> Trichlorofluoromethane ND U 1.0 0.60 1 04/05/07 04/05/07 PWG0700543 <br /> Vinyl Chloride ND U 0.50 0.43 1 04/05/07 04/05/07 PWG0700543 <br /> Control Date <br /> Surrogate Name %Rec Limits Analyzed Note <br /> 1,2-Dichloroethane-d4 103 73-115 04/05/07 Acceptable <br /> 4-Bromofluorobenzene 99 63-118 04/05/07 Acceptable <br /> Toluene-d8 107 76-122 04/05/07 Acceptable <br /> f Analyte Comments <br /> 1,1,2-Trichlorotrifluoroethane This analyte is not listed in EPA Method 624 <br /> cis-1,2-Dichloroethene This analyte is not listed in EPA Method 624 <br /> Dichlorodifluoromethane This analyte is not listed in EPA Method 624 <br /> Total Xylenes This analyte is not listed in EPA Method 624 <br /> Methyl tert-Butyl Ether This analyte is not listed in EPA Method 624 <br /> Comments: This method does not fall under the laboratory's NELAC certificate of approval. The method was modified(desorption time)to achieve the reporting limits. <br /> 12 <br /> Printed: 04/09/2007 13:59:13 Form l A-Organic Page 2 of 2 <br /> P:ISTEALTH\CRYSTAL.RPTTormlm.rpt Merged SuperSetReference: RR13511 <br />