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QC Sample Results <br /> Client: Conestoga-Rovers&Associates, Inc. TestAmerica Job ID:440-66281-1 <br /> Project/Site: 1267 Country Club Blvd., Stockton, CA <br /> Method: 8260B -Volatile Organic Compounds (GC/MS) (Continued) <br /> Lab Sample ID: MB 440-154413/4 Client Sample ID:Method Blank <br /> Matrix:Water Prep Type:Total/NA <br /> Analysis Batch: 154413 <br /> MB MB <br /> Analyte Result Qualifier RL MDL Unit D Prepared Analyzed oil Fac <br /> N-Propylbenzene ND 0.50 ug/L 01/07/1408:26 1 <br /> 4-Isopropyltoluene ND 0.50 ug/L 01/07/14 08:26 1 <br /> sec-Butyl benzene ND 0.50 ug/L 01/07/14 08:26 1 <br /> Styrene ND 0.50 ug/L 01/07/14 08:26 1 <br /> Tert-amyl-methyl ether(TAME) ND 0.50 ug/L 01/07/14 08:26 1 <br /> tert-Butyl alcohol(TBA) ND 10 ug/L 01/07/14 08:26 1 <br /> tert-Butyl benzene ND 0.50 ug/L 01/07/14 08:26 1 <br /> Tetrachloroethene ND 0.50 ug/L 01/07/14 08:26 1 <br /> Toluene ND 0.50 ug/L 01/07/14 08:26 1 <br /> trans-1,2-Dichloroethene ND 0.50 ug/L 01/07/14 08:26 1 <br /> trans-1,3-Dichloropropene ND 0.50 ug/L 01/07/14 08:26 1 <br /> Trichloroethene ND 0.50 ug/L 01/07/14 08:26 1 <br /> Trichlorofluoromethane ND 0.50 ug/L 01/07/14 08:26 1 <br /> Vinyl chloride ND 0.50 ug/L 01/07/14 08:26 1 <br /> Xylenes,Total ND 1.0 ug/L 01/07/14 08:26 1 <br /> 1,3,5-Trimethylbenzene ND 0.50 ug/L 01/07/14 08:26 1 <br /> Ethylbenzene ND 0.50 ug/L 01/07/14 08:26 1 <br /> Vinyl acetate ND 2.0 ug/L 01/07/14 08:26 1 <br /> 2-Butanone(MEK) ND 5.0 ug/L 01/07/14 08:26 1 <br /> 4-Methyl-2-pentanone(MIBK) ND 5.0 ug/L 01/07/14 08:26 1 <br /> MB MB <br /> Surrogate %Recovery Qualifier Limits Prepared Analyzed DR Fac <br /> 4-Bromoiluorobenzene(Surr) 108 80-120 01/07/14 08:26 1 <br /> Dibromofluoromethane(Surf) 92 76-132 01/07/14 08:26 1 <br /> Toluene-d8(Surr) 103 80-128 01/07/14 08:26 1 <br /> Lab Sample ID: LCS 440-154413/5 Client Sample ID: Lab Control Sample <br /> Matrix:Water Prep Type:Total/NA <br /> Analysis Batch: 154413 <br /> Spike LCS LCS %Rec. <br /> Analyte Added Result Qualifier Unit D %Rec Limits <br /> 1,1,1,2-Tetrachloroethane 25.0 28.3 ug/L 113 60-141 <br /> 1,1,1-Trichloroethane 25.0 28.6 ug/L 114 70-130 <br /> 1,1,2,2-Tetrachloroethane 25.0 29.9 ug/L 120 63-130 <br /> 1,1,2-Trichloroethane 25.0 24.4 ug/L 98 70-130 <br /> 1,1-Dichloroethane 25.0 23.8 ug/L 95 64-130 <br /> 1,1-Dichloroethene 25.0 27.5 ug/L 110 70-130 <br /> 1,1-Dichloropropene 25.0 28.8 ug/L 115 70-130 <br /> 1,2,3-Trichlorobenzene 25.0 25.6 ug/L 102 60-140 <br /> 1,2,3-Trichloropropane 25.0 30.2 ug/L 121 63-130 <br /> 1,2,4-Trichlorobenzene 25.0 27.3 ug/L 109 60-140 <br /> 1,2,4-Trimethylbenzene 25.0 29.8 ug/L 119 70-135 <br /> 1,2-Dibromo-3-Chloropropane 25.0 30.3 ug/L 121 52-140 <br /> 1,2-Dibromoethane(EDB) 25.0 27.0 ug/L 108 70-130 <br /> 1,2-Dichlorobenzene 25.0 26.8 ug/L 107 70-130 <br /> 1,2-Dichloroethane 25.0 27.2 ug/L 109 57-138 <br /> 1,2-Dichloropropane 25.0 24.7 ug/L 99 67-130 <br /> 1,3-Dichlorobenzene 25.0 28.0 ug/L 112 70-130 <br /> TestAmerica Irvine <br /> Page 12 of 33 1/13/2014 <br />