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SPL BATCH QUALITY CONTROL REPORT == PACEHOUSTON LABORATORY <br /> METHOD 8020/602 8880 INTERCHANGE DRIVE <br /> .i 0 HOUSTON,TEXAS 77054 <br /> PHONE(713)860-0901 <br /> Matrix: Aqueous Batch Id: HP_J960721063300 <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 /> <2> <3> <1> $ Recovery Range <br /> MTBE ND 50 51 102 20 - 110 <br /> Benzene ND 50 44 88.0 62 - 121 <br /> Toluene ND 50 45 90.0 66 - 136 <br /> EthylBenzene ND 50 45 90.0 70 - 136 <br /> 0 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 E S <br /> S P I K £ Sample Spike Matrix Spike Matrix Spike MS/MSD OC 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 22 110 19 95.0 14.6 20 39 - 150 <br /> BENZENE ND 20 18 90.0 18 90.0 0 25 39 - 150 <br /> TOLUENE ND 20 18 90.0 17 85.0 5.71 26 56 - 134 <br /> THYLBENZENE ND 20 17 85.0 16 80.0 6.06 38 61 - 128 <br /> 0 XYLENE ND 20 16 80.0 15 75.0 6.45 29 4D - 130 <br /> M & P XYLENE ND 40 34 85.0 31 77.5 9.23 20 43 - 152 <br /> Analyst: AA * Values Outside QC Range <br /> Sequence Date: 07/21/96 NC - 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> 1 x 100 <br /> Method Blank File ID: LCS k Recovery - (<1> / <3> } x 100 <br /> Blank Spike File ID: J_491.TXO Relative Percent Difference = 1 (<4> - <5> I / [(<4> + <5> ) x 0.51 x 100 <br /> Matrix Spike File ID: J-494.TX0 (**) - Source: SPL-Houston Historical Data (3rd Q 195) <br /> Matrix Spike Duplicate File ID: J_495.TX0 {**_} = Source: SPL-Houston Historical Data (2nd Q 195) <br /> SAMPLES IN BATCHCSPL_ ID) 9607856-03A 9607856-OIA 9507846-06A 9607862-02A <br /> 9607859-04A 9607846-08A 9607834-OIA 9607866-01A <br /> 9507809-02A 9607852-OIA 9607852-02A 9607852-03A <br /> 9607852-04A 9607852-05A 9607852-06A 9607862-09A <br /> 9607862-10A <br /> QC Officer <br />