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** SPL BATCH QUALITY CONTROL REPORT ** PAGE 1 <br /> METHOD 8020 <br /> Matrix Aqueous Batch Id: HP_J941224201600 <br /> Units gg/L <br /> L A B O R A T O R Y C O N T R O L S A M P L E <br /> S P I K E Method Spike Blank S ike QC Limits(**) <br /> C O M P O U N D S Blank Result Added Result Recovery (Mandatory) <br /> <2> <3> <1> % % Recovery Range <br /> Benzene ND 50 47 94 0 54 - 126 <br /> Toluene NO 50 45 90 0 61 - 125 <br /> EthylBenzene ND 50 45 90 0 57 - 129 <br /> 0 Xylene ND 50 44 88.0 32 - 160 <br /> M & P Xylene ND 100 99 99 0 32 - 160 <br /> M A T R 1 % S P I K E S <br /> S P I K E Sample spike Matrix spike Matrix Spike MS/MSD QC Limits(***) <br /> C 0 M P 0 U N D S Results Added Duplicate Relative % Advisor <br /> Result Recovery Result Recovery Difference RPD <br /> <2> <3> <1> <4> <1> <5> Max. Recovery Range <br /> Benzene NO 20 21 105 21 105 0 19 61 - 131 <br /> Toluene ND 20 20 100 20 100 0 18 57 - 127 <br /> EthylBenzene ND 20 19 95 0 20 100 5 13 18 55 - 131 <br /> 0 Xylene ND 20 18 90 0 19 95 0 5 41 20 40 - 130 <br /> M & P Xylene NO 40 38 95 0 39 97 5 2 60 16 43 - 152 <br /> Analyst YN * = Values Outside QC Range <br /> Sequence Date 12/24/94 NC = Not Calculated (Sample exceeds spike 6y factor of 4 or more) <br /> SPL ID of sample spiked 9412879-01A ND = Not Detected/Below Detection Limit <br /> Sample File ID J_238 TXO % Recovery = [( <1> - <2> ) / <3> ) x 100 <br /> Method Blank File ID LCS % Recovery = (<1> / <3> ) x 100 <br /> Blank Spike File ID J�228 TXO Relative Percent Difference = 1(<4> - <5> / [(<4> + <5> ) x 0 53 x 100 <br /> Matrix Spike File ID J_231 TXO (**) = Source SPL-Houston Historical Data <br /> Matrix Spike Duplicate File ID J_232 TXO (***) = Source SPL-Houston Historical Data <br /> SAMPLES IN BATCH SPL ID 9412879-01A 9412AO2-04A 9412879-04A 9412875-04A <br /> Idelis Willi is, QC Officer <br />