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Quality Control Results <br /> Client: Environmental Cost Management, Inc. Job Number: 720-24805-1 <br /> Lab Control Sample/ Method: 8260B/CA_LUFTMS <br /> Lab Control Sample Duplicate Recovery Report-Batch: 720-63445 Preparation: 5030B <br /> LCS Lab Sample ID: LCS 720-63445/4 Analysis Batch: 720-63445 Instrument ID: Chemtation 3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 12230924.D <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 10 mL <br /> Date Analyzed: 12/23/2009 2043 Final Weight/Volume: 10 mL <br /> Date Prepared: 12/23/2009 2043 <br /> LCSD Lab Sample ID: LCSD 720-63445/5 Analysis Batch: 720-63445 Instrument ID: Chemtation 3 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 12230925.D <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 10 mL <br /> Date Analyzed: 12/23/2009 2117 Final Weight/Volume: 10 mL <br /> Date Prepared: 12/23/2009 2117 <br /> %Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS Qual LCSD Qual <br /> 1,1-Dichloroethene 108 113 70-130 4 20 <br /> 1,1-Dichloroethane 105 109 70-130 3 20 <br /> Dichlorodifluoromethane 130 143 38-142 9 20 <br /> Vinyl chloride 121 130 58-147 7 20 <br /> Chloroethane 119 124 51 -149 4 20 <br /> Trichlorofluoromethane 94 99 62-136 5 20 <br /> Methylene Chloride 96 97 71 -127 2 20 <br /> trans-1,2-Dichloroethene 94 99 80-125 6 20 <br /> cis-1,2-Dichloroethene 114 116 80-136 1 20 <br /> Chloroform 101 104 70-130 2 20 <br /> 1,1,1-Trichloroethane 108 111 74-135 3 20 <br /> Carbon tetrachloride 107 113 69-136 6 20 <br /> 1,2-Dichloroethane 100 103 70-133 3 20 <br /> Trichloroethene 106 110 72-138 4 20 <br /> 1,2-Dichloropropane 105 106 75-138 1 20 <br /> Dichlorobromomethane 110 112 74-140 1 20 <br /> trans-1,3-Dichloropropene 108 108 74-137 0 20 <br /> cis-1,3-Dichloropropene 113 116 72-148 2 20 <br /> 1,1,2-Trichloroethane 102 105 67-151 3 20 <br /> Tetrachloroethene 107 111 80-134 4 20 <br /> Chlorodibromomethane 108 108 68-137 0 20 <br /> Chlorobenzene 104 107 80-122 2 20 <br /> Bromoform 83 85 56-144 2 20 <br /> 1,1,2,2-Tetrachloroethane 98 100 72-146 2 20 <br /> 1,3-Dichlorobenzene 104 106 80-128 3 20 <br /> 1,4-Dichlorobenzene 101 102 80-122 1 20 <br /> 1,2-Dichlorobenzene 101 103 80-127 1 20 <br /> Chloromethane 102 110 52-136 7 20 <br /> Bromomethane 124 124 23-171 0 20 <br /> 1,1,2-Trichloro-1,2,2-trifluoroethane 113 116 66-132 3 20 <br /> EDB 103 105 70-143 2 20 <br /> 1,2,4-Trichlorobenzene 99 101 70-143 3 20 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 20 Of 40 <br />