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SPL BATCH QUALITY CONTROL REPORT +* PAGE <br /> METHOD 8020/602 HOUSTON LASORATORy <br /> 8880 INTERCHANGE DRIVE <br /> A Batch Id: HP_J960719092100 HOUSTON,TEXAS 77054 <br /> Units: µg/L PHONE(713)660-0901 <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 Spike <br /> QC Limits(**) <br /> C O M P O U N D S Blank Result Added Result Recovery (Mandatory) <br /> ca> <3> ry <br /> <1°> $ t Recovery Range <br /> MTBE ND 50 54 108 20 - 110 <br /> Benzene ND 50 43 86.0 62 - 121 <br /> Toluene ND 50 43 86.0 66 - 136 <br /> EthylBenzene ND 50 43 86.0 70 - 136 <br /> 0 Xylene ND 50 44 88.0 74 - <br /> 134 <br /> M & P Xylene ND 100 90 90.0 77 - 140 <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 P MS/MSD QC Limits(***) <br /> C O M P O U N D S Results Added Du licate Relative t Adviso ) <br /> Result Recovery Result Recovery Difference RPD <br /> <2> <3> <1> <4> <1> <5> <br /> Max. Recovery Range <br /> MTBE NO 20 22 110 21 105 4.65 20 <br /> 39 - 150 <br /> BENZENE ND 20 19 95.0 19 95.0 0 25 <br /> 39 - 150 <br /> TOLUENE ND 20 18 90.0 18 90.0 0 26 <br /> 56 - 139 <br /> ETHYL8ENZENE NO 20 17 85.0 18 90.0 5.71 38 61 - 128 <br /> 0 XYLENE ND 20 17 85.0 17 85.0 0 �9 <br /> M & P XYLENE ND 40 36 90.0 37 92.5 2.74 20 43 - 152 <br /> Analyst: RL * a values qutsid_ee_QC_Range <br /> `Sequence Date—,07%19/96 NC Not Calculated (Sample exceeds spike by factor of 4 Or more) <br /> SPL ID of sample spiked: 9607795-OSA NO Not Detected/Below Detection Limit <br /> Sample File ID: J-424.TXO 3 Recovery = [( cls - <2> ) / <3> ] x 100 <br /> Method Blank File ID: LCS % Recovery = (<1> / <3> ] x 100 <br /> Blank Spike File ID: S`416.TX0 Relative Percent Difference (<4> - <5> <br /> / [{<4> + c5a } x 0.5] x 100 <br /> Matrix Spike File ID: ,T_431.TXO (**) Source: SPL-Houston Historical Data (3rd Q 195) <br /> Matrix Spike Duplicate File ID: 7_432.TXO (***} Source: SPL-Houston Historical Data (2nd Q '95) <br /> SAMPLES IN BATCH(SPL ID) : 9607795-06A 9697809-03A 9607795-IOA 9607856-02A <br /> 9607755-05A 9607755-02A 9607755-06A 9607755-OSA <br /> 9607755-03A 9607795-15A 9607795-OSA <br /> } s. <br /> QC Officer I ' <br />