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' SPL BATCH QUALITY CONTROL REPORT ** PAGIHOUSTON LABORATORY <br /> METHOD B020/602 8880 INTERCHANGE DRIVE <br /> ® HOUSTON.TEXAS 77054 <br /> PHONE(713)660-0901 <br /> Matrix: Aqueous Batch Id: HP J96030061200 <br /> Units: ug/L <br /> L A B 0 R A T 0 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> 1; % Recovery Range <br /> MTBE ND 50 53 106 20 - 110 <br /> Benzene ND 50 54 10B 62 - 121 <br /> Toluene ND 50 50 100 66 - 136 <br /> EthylBenzene ND 50 49 98.0 70 - 136 <br /> O Xylene ND 50 48 96.0 74 - 134 <br /> M & P Xylene ND 100 100 100 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 NLS/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 4 20 29 90.0 30 95.0 5.41 20 39 - 150 <br /> BENZENE ND 20 21 105 21 105 0 25 39 - 150 <br /> `:TOLUENE ND 20 18 90.0 18 90.0 0 26 56 - 134 <br /> r%ETHYLBENZENE ND 20 17 85.0 17 85.0 0 381 61 - 128 <br /> 0 XYLENE ND 20 16 90.0 17 85.0 5.71 29 40 - 130 <br /> M & P XYLENE ND 40 35 87.5 34 85.0 2.90 20 43 - 152 <br /> Analyst; AA = Values Outside QC Range <br /> Sequence Date: 03/09/96 NC = Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked: 9603020-02A ND = Not Detected/Below Detection Limit <br /> Sample File ID: S_495.TX0 % Recovery - [( <1> - <2> ) / <3> ] x 100 <br /> Method Blank File ID: LCS % Recovery = (<1> / <3> ) x 100 <br /> Blank Spike File ID: J_482.TX0 Relative Percent Difference = ( (<4> - <5> / [(<4> + <5> ) x 0.51 x 100 <br /> Matrix Spike File ID: J_510.TX0 (*•} Source: SPL-Houston Historical Data (3rd Q 195) <br /> Matrix Spike Duplicate File ID; J_511.TX0 (*••] = Source: SPL-Houston Historical Data (2nd Q 195) <br /> SAMPLES IN BATCH(SPL ID): 9603232-OIA 9603232-02A 9603232-03A 9603232-04A <br /> 9603232-OSA 9603232-06A 9603232-07A 9603232-08A <br /> 9603020-02A 9603020-OSA 9603114-07A 9603114-OBA <br /> 9603115-01A 9603115-02A 9603115-03A 9603115-04A <br /> 9603114-09A 9603115-05A 9603114-06A <br /> QC Officer <br />