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* SPL BATCH QUALITY CONTROL REPORT w* PAGEHOUSTON LABORATORY <br /> METHOD 8020/602 8880 INTERCHANGE DRIVE <br /> HOUSTON,TEXAS 77054,., , <br /> ' PHONE (713)660-0901 <br /> Matrix: Aqueous Batch Id: HP J960725121100 <br /> Units: Kg/L 0 <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 /> t 1; Recovery Range <br /> MTBE NO 50 51 102 20 - 110 <br /> Benzene NO 50 37 74.0 62 - 121 <br /> Toluene ND 50 37 74.0 66 - 136 <br /> EthylBeazene NO 50 39 78.0 70 - 136 <br /> 0 Xylene NO 50 39 78.0 74 - 134 <br /> M & P Xylene ND 100 80 80,0 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 2.0 20 17 75.0 19 85.0 12.5 20 39 - 150 <br /> BENZENE NO 20 18 90.0 19 95.0 5.41 25 39 - 150 <br /> TOLUENE NO 20 19 95.0 19 95.0 0 26 56 - 134 <br /> ETHYLBENZENE ND 20 18 90.0 18 90.0 0 38 61 - 128 <br /> 0 XYLENE ND 20 18 90,0 18 90.0 0 29 40 - 130 <br /> M & P XYLENE NO 40 37 92.5 38 95.0 2.67 20 43 - 152 <br /> Analyst: RL Values Outside OC Range <br /> Sequence Date: 47/24/96 NC = Not Calculated (Sample exceeds spike by factor of 4 or morel <br /> SPL ID of sample spiked: 9607A60-07A ND = Not Detected/Below Detection Limit <br /> Sample File ID: J_655.TXO I Recovery = [( <1> - <2> ) / e3> ] x 100 <br /> Method Blank File ID: LCS I Recovery = (<1> / <3> } x 100 <br /> Blank Spike File ID; J_632.TX0 Relative Percent Difference I (c4> - <5> / ((c4> t <5> I x 0.5] x 100 <br /> Matrix Spike File ID: J-660,TXO (**} Source: SPL-Houston Historical Data (3rd Q 195) <br /> Matrix Spike Duplicate File ID: J_661.TXO (+**) = Source: SPL-Houston Historical Data (2nd Q -95) <br /> SAMPLES IN BATCH(SPL ID) : 9607971-02A 9607971-04A 9607971-OSA 9607971-06A <br /> 9607A25-01A 9607A25-02A 9607A25-03A 9607A25-04A <br /> 9607A70-01A 9607A25-05A 9607A20-01A 9607A60-07A <br /> 9607A60-02A 9607A70-03A 9607A60-06A 9607A70-02A <br /> 9607852-06A 9607852-07A 9607852-08A 9607971-OIA <br /> QC Officer <br />