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* SPL BATCH QUALITY CONTROL REPORT ** PAG <br /> �iQUSTON LA60RATORY <br /> METHOD 8020/602 8880 INTERCHANGE DRIVE <br /> HOUSTON,TEXAS 77054 <br /> ;f Matrix: Aqueous Batch Id: HP N9609151849bb PHONE (713)660-0901 <br /> _. — <br /> Units: hg/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> $ k Recovery Range <br /> MTBE ND 50 44 88.0 63 - 120 <br /> Benzene ND 50 43 86.4 62 - 121 <br /> Toluene ND 50 42 84.4 66 - 136 <br /> SthylBenzene NO 50 46 92,0 70 - 136 <br /> 0 Xylene ND 50 49 98.0 74 - 134 <br /> M & P Xylene ND 100 99 99.0 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 k (Advisory) <br /> Result Recovery Result Recovery Difference RPD <br /> <2> <3> el> <4> <1> <5> Max. Recovery Range <br /> MTBE ND 20 22 110 22 110 0 2C 39 - 150 <br /> BENZENE ND 20 22 110 221 110 ❑ 25 39 - 150 <br /> TOLUENE ND 20 20 100 19 95.0 5.13 26 56 - 134 <br /> „- ETH-YLBENZENE ND 20 21 105 20 100 4.88 38 61 - 128 <br /> 0 XYLENE ND 20 22 110 21 105 4.65 29 40 - 130 <br /> M & P XYLENE ND 40 44 110 44 110 0 20 43 - 152 <br /> Analyst: LJ * = Values Outside QC Range <br /> Sequence Date: 09/15/96 NC = Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked: 9609413-08A ND = Not Detected/Below Detection Limit <br /> Sample File ID: N I6655.TXC % Recovery = [{ <1> - <2> ) / <3> ] x 100 <br /> Method Blank File ID: LCS V Recovery = (<1> / <3> ) x 100 <br /> Blank Spike File ID: N_I6646.TXO Relative Percent Difference = 1 (<4> - <5> I / [(<4> + <5> ) x D.51 x 100 <br /> Matrix Spike File ID; N 16650.TXO (**) = Source: SPL-Houston Historical Data (3rd Q '95) <br /> Matrix Spike Duplicate File ID: N I6651.TXO (***} = Source: SPL-Houston Historical Data (2nd Q 195) <br /> SAMPLES IN BATCH(SPL ID) : 9609413-OSA 9609413-09A 9609324-06A 9609413-01A <br /> 9609413-02A 9609413-03A 9609413-04A 9609413-05A <br /> 9609413-06A 9609413-07A 9609413-IIA 9609413-12A <br /> 9609413-13A 9609413-14A 9609256-OIA 9609256-02A <br /> 9609256-04A 9609256-OSA <br />