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Associated Laboratories <br /> QA / QC EPA Methods 8260, 624, & 524.2 '- GCMS # 4 <br /> Sample ID: MS/MSD-water sample 160554-927 <br /> Date Analyzed November 29, 2005 2.45am <br /> Sample Matrix. water <br /> Units: pg/L <br /> Applies to LR 159393, 160407, 159880, 160530, 160554 <br /> Sample I Spike Spike Dup Spice Dup ac Limas <br /> Compound Conc Added Res Res % Rec % Rec RPD RPD 96 Rec <br /> 1,1-Dichloroethene - 000 : '500 5470 5526 109 1 111 n 1 22 - 59 - 172 <br /> MTBE 000 500 5270 4936 105 99 7 24 62 - 137 <br /> Benzene 000 500 50 26 51 97 101 104 3 24 62 - 137 <br /> Trichloroethene 000 500 5283 5089 106 102 4 21 66 - 142 <br /> Toluene 000 1 500 1 50.11 - 1 50.35 1 100 1 101 0 21 59 - 139 <br /> Chlorobenzene 000 1 500 1 4816 1 4797 1 96 96 0 21 60 - 13311 <br /> * <br /> =Outside QC limits due to high concentration in sample <br /> Sample ID: LCS - water <br /> Date Analyzed: November 28, 2005 9 21 pm <br /> Sample Matrix. water <br /> -Units• pg/L <br /> Sample Spike Spike Spike ac Limits <br /> Compound Conc Added I Res % Rec RPD % Rec <br /> 1,1-Dichloroethene 000 500 5524 110 22 59 - 172 <br /> MTBE 000 500 5049 101 , 24 62 - 137 <br /> Benzene - =- _ —0 00W -50 0= "52+49- - - - -105-= - -- - - 24`- 62- 137 -" <br /> Trichloroethene . 0 00 50 0 53 30_ 107, 21 . 66 - 142 <br /> Toluene 000 500 51 22 102 21 59 - 139 <br /> Chlorobenzene 000 50 0 4966 99 21 160 - 133, <br /> If Sample Result>4 tunes Spike Added,then"NC" <br /> Surrogate Recovery GCMS # 4 <br /> Limits <br /> Compound Mal MB2 MS MSD LCS % Rec <br /> Dibromofluoromethane 101 98 101 104 99 70-135 <br /> 1,2-Dichloroethane-d4 113 109 105 105 109 70-135 <br /> Toluene-d8 100 1 95 1 100 1 100 1 99 1 1 1 70-135 11 <br /> p-Bromofluorobenzene 1 98 1 107 1 97 1 101 1 100 1 70-135 <br /> 8260LB_l1 1128 4 <br />