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* SPL BATCH QUALITY CONTROL REPORT ** PAGEiOUSTON LABORATORY <br /> METHOD 8020*** 8880 INTERCHANGE DRIVE <br /> 41 j9Z HOUSTON TEXAS 77054 <br /> NNOWNWONNEF Q <br /> PHONE(7t 3)660-0901 <br /> Matrix Aqueous Batch Id HP_N960708052200 <br /> Units Kg/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 Spike QC Limits(**) <br /> C O M P O U N 0 S Blank Result Added Result Recovery (Mandatory) <br /> <2> <3> <1> % Recovery Range <br /> MTBE ND 50 47 94 0 20 - 110 <br /> Benzene ND SO 45 90 0 62 - 121 <br /> Toluene ND so 44 88 0 66 - 136 <br /> EthylBenzene ND 50 48 96 0 70 - 136 <br /> O Xylene ND 50 46 92 0 74 - 134 <br /> M & P Xylene ND 100 97 97 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 MS/MSD QC Limits(***) <br /> C O M P O U N D S Results Added Duplicate Relative (Advisory} <br /> Result Recovery Result Recovery Difference RPD <br /> <2> <3> <1> <4> <1> <5> Max Recovery Range <br /> MTBE ND 20 23 115 23 115 0 20 39 - 150 <br /> BENZENE ND 20 23 115 23 115 0 25 39 - 150 <br /> TOLUENE ND 20 22 110 21 105 4 65 26 56 - 134 <br />• ET14YLBENZENE ND 20 22 110 22 110 0 38 61 - 128 <br /> O XYLENE ND 20 19 95 0 20 100 5 13 29 40 - 130 <br /> M & P XYLENE ND 40 40 100 41 102 1 98 20 43 - 152 <br /> Analyst LS Values Outside QC Range <br /> Sequence Date 07/08/96 NC - Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPI, ID of sample spiked 9607144-DIA ND = Not Detected/Below Detection Limit <br /> Sample File ID N_326 TXO % Recovery - [( <1> - <2> ) / <3> ) x 100 <br /> Method Blank File ID LCS % Recovery - (<l> / <3> 1 x 100 <br /> Blank Spike File ID N_298 TXO Relative Percent Difference y 1 (<4> - <5> I / [(<4> . <5> 1 x 0 51 x 100 <br /> Matrix Spike File ID N�344 TXO (•*F - Source SPL-Houston Historical Data (4th Q 195) <br /> Matrix Spike Duplicate File ID N_345 TXO {***) Source SPL-Houston Historical Data (4th Q 195) <br /> SAMPLES IN BATCH(SPL ID) 9607133-06A 9607133-OSA 9607133-05A 9607133-07A <br /> 9607133-OBA 9607144-08A 9607144-OIA 9607144-02A <br /> 9607144-03A 9607144-04A 9607144-05A 9607144-06A <br /> 9607144-07A 9607262-01A 9607262-02A <br /> G � � <br /> QC O ficer <br />