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SPL BATCH QUALITY CONTROL REPORT +* HOUSTON LABORATORY <br /> Methad 8020A*** 8880 INTERCHANGE DRIVE <br /> HOUSTON TEXAS 1705-L <br /> 0 <br /> us Batch Id VARE980324115100 PHONE 1713) 660 0901 <br /> Units ug/L <br /> L A B O R A T O R Y C O N T R O L S A M P_LE <br /> S P I K E Method Spike Blank Spike QC Limits(**) <br /> C O M P O U N D S Blank Result Added Result Recovery (Mandatary) <br /> <2> <3> <1> % Recovery Range <br /> MTBE ND 50 58 116 72 - 128 <br /> Benzene ND 50 48 196 0 61 - 119 <br /> Toluene ND 50 48 96 0 65 - 125 <br /> EthylBenzene ND 50 48 96 0 70 - 11B <br /> O Xylene ND 50 47 94 0 72 - 117 <br /> M & P Xylene ND 100 96 96 0 72 - 116 <br /> M A T R I X S P I K E S <br /> S P I K E Sample Spike Matrix Spike Matrix Spike MS/MSD QC Limits(***1 <br /> C O M P O U N D S Results Added Duplicate Relative k (Advisory <br /> Result Recovery Result Recovery Difference RPD <br /> <2> <3> <1> <4> <1> <5> Max Recovery Range <br /> MTBE ND 20 26 130 29 145 10 9 20 39 - 150 <br /> BENZENE ND 20 14 70 0 18 90 0 25 0 * 21 32 - 164 <br /> TOLUENE ND 20 13 65 0 18 90 9 32 3 * 20 38 - 159 <br /> ETHYLBENZENE ND 20 13 65 0 17 85 0 26 7 * 19 52 - 142 <br /> O XYLENE ND 20 13 65 0 17 85 0 26 7 * 18 53 - 143 <br /> M & P XYLENE ND 40 25 62 5 34 85 0 30 5 * 17 53 - 144 <br /> * = Values outside QC Range due to Matrix Interference (except RPP) <br /> Anal-st 14Z c = Data outside Method Specification limits <br /> Sequer_e Date 03/25/96 NC s Not Calculated (Sample exceads spike by factor of 4 or more) <br /> SPL ID of sample spiked 9803AO9-06A ND Not Detected/Below Detection Limit <br /> Sample File ID E_C4068 TXO % Recovery = [( <1> - <2> ) / <3> } x 100 <br /> Method Blank File ID LCS % Recovery = (<1> / <3> ) x 100 <br /> Blank Spike File ID E_C4062 TXO Relative Percent Difference = I (<4> - <5> 1 / [(<4> - <5> 1 x 0 51 x 100 <br /> Matrix Spike File ID E_C4064 TXO (**) = Source SPL-Houston Historical Data (1ST Q 1971 <br /> Matrix Spike Duplicate File ID E_C4065 TXD I—) - Source SPL-Houston Historical Data (1ST Q 197) <br /> SAMPLES IN BATCH(SPL ID) 9803985-03A 9803274-02A 9803984-07A 9803985-GIA <br /> 9803985-02A 9803AO9-06A 9803A09-08A 9803AQ9-OSA <br /> 9803A09-07A 9803992-OSA <br />