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ASSOCIATED LABORATORIES <br /> • QA REPORT FORM <br /> QC Sample LR 85380-221 <br /> Main-. WATER <br /> Prep Date 12/23/01 <br /> Analysts Date 12/23/01 12/24/01 <br /> LAB lD#'s In Batch LR 85380,85447 <br /> MATRIX SPIKE/'MATRIX SPIKE DUPLICATE RESULT <br /> REPORTING UNITS= ug/L <br /> Sample Spike Matrix liatr.x %Rec %Rec <br /> Test Method Result Added Spike Spk Dup NIS MSD RPD <br /> Benzene 8021 ND too 9 6 9 9 Q6 QQ 3 <br /> Toluene 8021 ND 10 0 98 10 0 9b I Oo 2 <br /> Ethylbenzene 8021 ND 100 1 1 7 1 1 9 117 110 2 <br /> Xylenes 8021 ND 20 0 200 205 1ofj 103 2 <br /> ND=Nor Defected <br /> . RPD—Relative Percent Difference of Marrtx Spike and Matrix Spike Dup 51.REC LIMITS — 70 130 <br /> %J2EC MS&MSA=Percent Recovery of Matrix Spike&Matrix Spike Duplicate JRPD LIM17S = 30 <br /> PREPARATION BLANK/LAB CONTROL SAMPLE RESULTS <br /> PRET' BILK LCS <br /> Test Method Value Result True %Rec L Limit H Limit <br /> Benzene 8021 ND 9 6 too 96 80% 120% <br /> Toluene 8021 ND I 1 5 too 115 80% 120% <br /> Ethylbenzene 8021 ND 11 l 10 0 111 80% 120% <br /> Xylenes 1 8021 1 ND 1 204 1 200 102 80% 120% <br /> LCS =Lab Control Sample Result <br /> TRUE—Trite Value of LCS <br /> L LIMIT/H LIMIT=LCS Control Lunirs <br /> SURROGATE RECOVERY <br /> Sample No AAA-TFT <br /> QC Limit 70-130 <br /> QA Sample 101 <br /> MS 90 <br /> MSD 91 <br /> Method Blank 99 <br /> LCS 90 <br /> AAA TFT-a a a Trafluornioluene <br /> 114/2002 8021 btex 1223w1 <br />