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SPL BATCH QUALITY CONTROL REPORT *; PAGE <br /> METHOD 8020/602 HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON, TEXAS 77054 <br /> Batch Id: HP_J960721063300 PHONE(713)660-0901 <br /> Units: IU /L <br /> L A S 0 R A T 0 R Y C O N T R O L S A M P L E <br /> g p i g E Method Spike Blank Spike QC Limits(**) <br /> C O M P O U N D S Blank Result Added Result Recovery (Mandatory) <br /> <1> Y Recovery Range <br /> c2> <3> <br /> MTBE ND 50 51 102 20 - 110 <br /> Benzene <br /> ND gq 44 88.0 62 - 121 <br /> Toluene ND 50 45 90.0 66 - 136 <br /> EthylBenzene ND 50 45 90.0 70 - 136 <br /> O Xylene ND 50 44 88.0 74 - 134 <br /> M & P Xylene ND 100 94 94.0 77 140 <br /> M A T R I X S P I K-ES <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 Du licate Relative (Advisory) <br /> Result Recovery Result Recovery Difference RPD <br /> <2> c3> <4> <1> <5> Max. Recovery Range <br /> MTBE ND 20 110 19 95.0 14.6 20 39 - 150 <br /> BENZENE ND 20 90.0 18 90.0 0 25 39 - 150 <br /> TOLUENE ND 20 90.0 17 85.0 5.71 26 56 - 134 <br /> ETHYLBENZENE ND 20 85.0 16 80.0 6.06 38 64 - 128 <br /> O XYLENE ND 20 80.0 15 75.0 6.45 29 40 - 130 <br /> M & P XYLENE ND 40 85.0 31 77.5 9.23 20 43 - 152 <br /> Analyst: AA * Values Outside QC Range <br /> Sequence Date: 07/21/96 NC R Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked: 9607856-01A ND - Not Detected/Below Detection Limit <br /> Sample File ID: J�503.TX0 % Recovery - (( <1> - <2> ) / <3> ) x 100 <br /> Method Blank File ID: LCS % Recovery - (<1> / <3> ! x 100 <br /> Blank Spike Pile ID: J_491.TX0 Relative Percent Difference 1 (<4> - <5> / {(<4> + <5> ) x 0.51 x 100 <br /> Matrix Spike File ID: J_494.TX0 (**) + Source: SPL-Houston Historical Data (3rd Q '95) <br /> Matrix Spike Duplicate File ID: J__--495.TX0 (**•) - Source: SPL-Houston Historical Data (2nd Q '95) <br /> SAMPLES IN HATCH SPL ID) - 9607856-03A 9607856-DIA 9607846-06A 9607862-02A <br /> 9601859-04A 9607846-OBA 9607834-01A 9607866-OIA <br /> 9607809-02A 9607852-01A 9607852-02A 9607852-03A <br /> 9607852-04A 9607852-OSA 9607852-06A 9607862-09A <br /> 9607862-10A <br /> • <br /> v <br /> QC Officer ` <br />