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ASSOCIATED LABORATORIES <br /> QA REPORT FORM <br /> QC Sample LR 79670-219 <br /> Matrix WATER <br /> Prep Date 09/1 6YO I <br /> Analysis Date 09/16/01 -09/17/01 <br /> LAB ID##'s to Batch LR 79683 79805,79779,79913 <br /> MATRIX SPIKE/MATRIX SPIKE DUPLICATE RESULT <br /> REPORTING UNITS= ug/L <br /> Sample Spike Matrix Matrix %Rec %Rec <br /> Test Method Result Added Spike Spk Dup MS MSD RPD <br /> Benzene 8021 ND 10 0 l04 10 0 1p0 to{� l} <br /> Toluene 8021 ND 10 0 10 2 101 102 Ml I <br /> Ethyibcnzene 8021 ND 100 1 1 8 1 1 6 118 1 16 <br /> Xylenes 9021 ND 200 214 20 9 1 107 1(}� <br /> ND-Not Detected <br /> RPD-Relatne Percent Difference of Marra Spike and Matra Spike Dup "REC LIMITS = 70 110 <br /> 'aEC MS&MSD a Percent Recovery of Matrix Spike&Maim Spike Duplicate RPD LIMITS = i0 <br /> PREPARATION BLANK/LAB CONTROL SAMPLE RESULTS <br /> PREP BLK LCS <br /> Test Method Value Result True %Rec L Limit H Limit <br /> Benzene 8021 ND 1006 too 101 80% 120% <br /> Toluene 8021 ND 1009 t00 101 800% 120% <br /> Ethylbenzene 8021 ND 1 1 47 100 H5 5 80% 120% <br /> Xylenes 8021 ND 1i 20 83 20 0 t€)1 80% 120% <br /> LCS -Lab Control Smnple Result <br /> TRUE-True VaLte o1 LCS <br /> L.LIMITI H LIMIT=LCS Control Limits <br /> SURROGATE RECOVERY <br /> Sample No AAA-TFT <br /> QC Limit 70-130 <br /> QA Sample 97 <br /> MS 103 <br /> MSD 103 <br /> Method Blank 1 95 <br /> LCS 103 II <br /> AAA TFT-a a a Trifiuorotoluene <br /> 9/25/2001 8021 btex "16w <br />