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)SOCIATED LABORATORY <br /> LCS FEPORT FORM - METHOD 8260 / 624/ 524 2 <br /> QC Sample LCS#3 <br /> sts Date 04/26/03 10 15 AM <br /> Applies to LR 109260 <br /> Reporting Units= ug/L <br /> LCS RECOVERY / METHOD BLANK <br /> Sample Spike LCS %Rec QC Limits <br /> Test Result Added Spike LCS %REC <br /> 1,1-Dichloroethene ND 50 5148 103 59-172 <br /> MTBE ND 50 4417 88 62-137 <br /> Benzene ND 50 4705 94 62-137 <br /> Trichloroethene ND 50 4624 92 66-142 <br /> Toluene ND 50 4696 94 59-139 <br /> Chlorobenzene ND 50 4574 91 60-133 <br /> QC Sample LCS #4 10 01 PM <br /> Analysis Date 04/26/03 <br /> LCS RECOVERY 1 METHOD BLANK <br /> Sample Spike LCS %Rec QC Limits <br /> Result Added Spike LCS %REC <br /> I,1-Dichloroethene ND 50 5093 102 59-172 <br /> MTBE ND 50 4450 89 62-137 <br /> Benzene ND 50 4632 93 62-137 <br /> Trichloroethene ND 50 4668 93 66-142 <br /> Toluene ND 50 4589 92 59-139 <br /> Chlorobenzene ND 50 4461 89 60-133 <br /> Method Blank=All ND <br /> SURROGATE ( QC Limits : 70-130) <br /> Compound MB#3 MB#4 LCS#3 LCS#4 <br /> Dibromofluoromethane 93 92 95 95 <br /> 1,2-Dtchloroethane-d4 113 1I4 97 96 <br /> Toluene-d8 101 101 103 99 <br /> p-Bromofluorobenzene 101 102 :101 100 <br /> 40 <br /> 4/29/2003 8260 Ics-Ics 0426w <br />