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/irawmo WJMZ <br /> ** SPL BATCH QUALITY CONTROL REPORT ** HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> O METHOD 8020 HOUSTON TEXAS 77054 <br /> -42 p PHONE(713)660-0901 <br /> Matrix: Aqueous Batch Id: HP_S991022012900 <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 Stank Spike QC Limits(**) <br /> C 0 M P 0 U N D S Blank Result Added Result Recovery (Mandatory) <br /> <2> <3> <1> % % Recovery Range <br /> MTBE NO 50 54 108 72 - 128 <br /> Benzene ND 50 55 110 61 - 119 <br /> Toluene NO 50 55 110 65 - 125 <br /> EthylBenzene NO 50 55 110 70 - 118 <br /> 0 Xylene NO 50 55 110 72 - 117 <br /> M & P Xylene NO 100 100 100 72 - 116 <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 /> Resutt Recovery Result Recovery Difference RPD <br /> <2> <3> <1> <4> <1> <5> Max. Recovery Range <br /> MTBE 29 20 52 115 52 115 0 20 39 150 <br /> BENZENE ND 20 20 100 20 100 0 21 32 164 <br /> TOLUENE ND 20 19 95 0 20 100 5 13 20 38 - 159 <br /> ETHYLBENZENE ND 20 19 95 0 20 100 5 13 19 52 - 142 <br /> 0 XYLENE ND 20 20 100 21 105 4 88 18 53 - 143 <br /> M & P XYLENE ND 40 35 87 5 36 90 0 2 82 17 53 - 144 <br /> * = Values outside QC Range due to Matrix Interference (except RPD) <br /> Analyst- LJ u = Data outside Method Specification Limits <br /> Sequence Date: 10/22/99 NC = Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked 9910539-02A NO = Not Detected/Below Detection Limit <br /> Sample File ID S_J3152.TXO % Recovery = [( <1> - <2> ) / <3> ) x 100 <br /> Method Blank File ID LCS % Recovery = (<1> / <3> ) x 100 <br /> Blank Spike Fite ID- S_J3145 TXO Relative Percent Difference = 1(<4> - <5> / [(<4> + <5> ) x 0 53 x 100 <br /> Matrix Spike File ID S J3147 TXO (*""} = Source SPL-Houston Historical Data (1st Q 197) <br /> Matrix Spike Duplicate File ID- S_J3148.TX0 (*""*) = Source SPL-Houston Historical Data (1st Q 197) <br /> SAMPLES IN BATCH(SPL 10): 9910539-06A 9910540-03A 9910539-04A 9910539-05A <br /> 9910539-02A 9910539-03A <br />