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;* SPL BATCH QUALITY CONTROL REPORT * pAMOUSTON LABORATORY' <br /> METHOD 8020/602 8880 INTERCHANGE DRIVE <br /> O HOUSTON,TEXAS 77054 <br /> T PHONE(713)660-0901 <br /> Matrix: Aqueous Batch Id: HP J960504093900 0 <br /> Units: µg/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 D S Blank Result Added Result Recovery (Mandatory) <br /> c2> <3> <i> t Recovery Range <br /> MTBE ND 50 39 78.0 20 - 110 <br /> Benzene ND 50 47 94.0 52 - 121 <br /> Toluene ND 50 45 90.0 66 - 136 <br /> EthylBenzene ND 50 46 92.0 70 - 136 <br /> O Xylene ND 50 47 94,0 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 DuplicateRelative % (Advisory) <br /> Result Recovery Result Recovery Difference APD <br /> <2> <3> <1> <4> <1> <5> Max. Recovery Range <br /> MTBE 2 20 20 90.0 19 85.0 5.71 20 39 - 150 <br /> BENZENE 2 20 16 70.0 16 70.0 0 25 39 - 150 <br /> TOLUENE ND 20 13 65.0 13 65.0 0 26 56 - 134 . <br /> ETHYLBENZENE ND 20 13 65.0 14 70.0 7.41 38 61 - 128 <br /> O XYLENE ND 20 15 75.0 15 75.0 0 29 40 - 130 <br /> M & P XYLENE ND 40 29 72.5 29 72.5 0 20 43 - 152 <br /> Analyst: VHZ * Values Outside QC Range <br /> Sequence Date: 05/04/96 NC a Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked: 9604CO2-02A ND - Not Detected/Below Detection Limit <br /> Sample File ID: J-586.TXO t Recovery - [( <1> - 42> ) / <3> ] x 100 <br /> Method Blank File ID: LCS % Recovery - (<1> / <3> ) x 100 <br /> Blank Spike File ID: J_57I.TXO Relative Percent Difference 1 (<4> - <5> I / [(<4> + <5> ) x 0,51 x 100 <br /> Matrix Spike File ID: J-594.TXO [**) s Source: SPL-Houston Historical Data (3rd Q 195) <br /> Matrix Spike Duplicate File TD: J_595.TXO (***) Source: SPL-Houston Historical Data ;2nd Q 195) <br /> SAMPLES IN BATCH(SPL ID): 9604BO2-02A 96041302-03A 9604BO2-04A 9604BO6-01A <br /> 9604806-02A 9604806-03A 9604CO2-02A 9604986-OBA <br /> 9604986-03A 9604802-01A <br /> QC Officer <br />