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I <br />' ASSOCIATED LABORATORIES <br /> QA REPORT FORM <br />' QC Sample LR 91589-856 <br /> Matrix WATER <br />' Prep Date 04/23/02 <br /> Analysis Date 4/231024/24102 <br />' LAB 1134's in Batch LR 91618 91625,91734 <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 88 8 7 88 87 1 <br /> Toluene 8021 ND 10 9l 91 91 91 0 <br /> Ethylbenzene 8021 ND 10 Il l 111 1 111 111 1 0 <br /> I Xylenes 8021 ND 1 20 202 203 101 102 0 <br /> -d <br /> ND=Nat Detected <br /> RPD=Relative Percent Difference of Maim Spike and Matm Spike Dnp %REC LIMITS 70 130 <br /> "oREC MS&MSD=Percent Recover}of Matrix Speke&Matrix Spike Duplicate JRPD LIMITS 30 <br /> PREPARATION BLANK/LAB CONTROL SAMPLE RESULTS <br /> PREP BILK LCS <br /> Test Method Value Result True %Rec L Limit H Limit <br /> Benzene 8021 ND S 7 10 57 80% 120% <br /> Toluene 8021 ND 89 10 89 80% 120% <br /> Ethylbenzene 8021 ND 10 9 10 109 80% 120°46 <br /> Xvlenes 8021 ND 19 8 20 1)9 80% 120% <br /> LCS =Lab Control Sample Result <br /> I TRUE=True Value of LCS <br /> L LIMIT!N LIMIT=LCS Control Limits <br /> SURROGATERECOVERY <br /> Sample No AAA-TFT <br /> QC Limit 70-130 <br /> IQA Sample 100 <br /> MS 108 <br /> MSD 107 <br /> . Method Blank 99 <br /> it CS 105 <br /> AAA TFT=a a a To illuorotohwne <br /> 512002 8021_btex_0423w <br />