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COLUMBIA ANALYTICAL SERVICES, INC. <br />Analytical Results <br />1 <br />Client: Shaw Environmental & Infrastructure, Inc <br />Service Request: P0700116 <br />Project: Foothill Landfill, San Joaquin <br />County/791289 (Leachate <br />Module) <br />Date Collected: <br />NA <br />Sample Matrix: Water <br />Date Received: NA <br />1 <br />Volatile Organic Compounds <br />1 <br />Sample Name: Method Blank <br />Units: ug/L <br />Lab Code: PWG0700310-4 <br />Basis: NA <br />1 <br />Extraction Method: EPA 5030B <br />Level: Low <br />Analysis Method: 8260B <br />Dilution <br />Date <br />Date <br />Extraction <br />Analyte Name Result <br />Q <br />PQL MDL <br />Factor <br />Extracted <br />Analyzed <br />Lot Note <br />trans-l,3-Dichloropropene ND <br />U <br />0.50 0.39 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />1 <br />trans-1,4-Dichloro-2-butene ND <br />U <br />20 0.75 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Trichloroethene (TCE) ND <br />U <br />0.50 0.38 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Trichlorofluoromethane ND <br />U <br />1.0 0.60 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Vinyl Acetate ND <br />U <br />10 0.90 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Vinyl Chloride ND <br />U <br />0.50 0.43 <br />1 <br />02/13/07 <br />02/13/07 <br />PWG0700310 <br />Control Date <br />Surrogate Name %Rec <br />Limits Analyzed <br />Note <br />Dibromofluoromethane 109 <br />77-126 02/13/07 <br />Acceptable <br />Toluene -d8 104 <br />77-119 02/13/07 <br />Acceptable <br />4-Bromofluorobenzene 94 <br />74-121 02/13/07 <br />Acceptable <br />1 <br />1 <br />1 <br />Comments: <br />Printed: 02/16/2007 08:34:31 <br />Form I - Organic <br />Page 3 of <br />3 <br />P:\STEALTMCRYSTAL.RPT\Formlm.rpt Merged <br />SuperSetReference: <br />RR13372 <br />