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• x <br /> SPL BATCH QUALITY CONTROL REPORT "` HOUSTON LABORATORY <br /> METHOD 8020 8880 INTERCHANGE DRIVE <br /> HOUSTON,TEXAS 77054 <br /> ozePHONE(713)880-0901 <br /> tr1x: Aqueous Batch 1d: HP_S990127150500 <br /> Units: ug/L <br /> L A B O R A T 0 R Y C O N T R O L S A M P L 8 <br /> S P I K E Method Spike Blank Spike__ __ QC Limits(*) <br /> C 0 M P 0 U N D S Blank Result Added Result Recovery (Mandatory) <br /> <2> <3> <1> t S Recovery Range <br /> MTBE ND 50 47 94.0 72 - 128 <br /> Benzene ND 50 47 94.0 61 - 119 <br /> Toluene ND 50 48 96.0 65 - 125 <br /> EChylBenzene ND 50 47 94.0 70 - 118 - <br /> 0 Xylene ND 50 48 96.0 72 117 <br /> M & P Xylene ND 100 95 95.0 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 Y iAdvisory) <br /> Result Recovery Result Recovery Difference RPD <br /> <2> <3> <1> <4> <1> <5> Max. Recovery Range <br /> MTBE 26 20 42 80.0 49 115 35.9 * 20 39 - 150 <br /> 9ENZENE ND 20 22 110 23 115 4.44 21 32 - 164 <br /> TOLUENE ND 20 23 115 23 115 0 20 38 - 159 <br /> ETHYLBENZENE ND 20 22 110 23 115 4.44 19 52 - 142 <br /> 0 XYLENE ND 20 22 110 23 115 4.44 18 53 - 143 <br /> M & P XYLENE ND 40 44 110 45 112 1.80 17 53 - 144 <br /> • Values outside QC Range due to Matrix Interference {except RPD) <br /> Analyst: GS Data outside Method Specification limits. <br /> Sequence Date: 01/27/99 NC � Not Calculated {Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked: 9901A21-02A ND = Not Detected/Below Detection Limit <br /> Sample File ID: S_A4074.TX0 % Recovery = [( <1> - <2> ) / <3> j x 100 <br /> Method Blank File ID: LCS 1; Recovery = (<1> / <3> ) x 100 <br /> Blank Spike File ID: S_A4067.TX0 Relative Percent Difference (<4> - <5> / [(<4> . <5> ) x 0.5] x 100 <br /> Matrix Spike File ID: S_A4069.TX0 l**) = Source: SPL-Houston Historical Data [1st Q 197) <br /> Matrix Spike Duplicate File ID: S_A4070.TXO (*'*} = Source: SPL-Houston Historical Data {18t Q 197) <br /> SAMPLES IN BATCH(SPL ID) : 9901A21-03A 9901A21-04A 9901A17-09A 9901A17-10A <br /> 9901A17-11A 9901A17-12A 9901A24-02A 9901A24-03A <br /> 9901A30-01A 9902A30-02A 9901A30-03A 9901A30-04A <br /> 9901A30-05A 5901A30-06A 9901A30-07A 9901A21-02A <br /> 9901A24-01A 4901A21-05A 9901A21-01A <br /> a <br />