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SPL BATCH QUALITY CONTROL REPORT*+ <br /> HOUSTON LABORATORY <br /> METHOD 8020*** 8880 INTERCHANGE DRIVE <br /> "A HOUSTON,TEXAS 77054 <br /> Batch Id: HP_0970531054510 PHONE(713)660-0901 <br /> Unita: pg/L <br /> L A B 0 R A T 0 R Y C O N T R 0 L S A M P L E <br /> S P I K E Method Spike __ _Blank Spike T QC Limits(**) <br /> C O M P O U N D S Blank Result Added Result Recovery (Mandatory) <br /> <2> <3> <1> It Recovery Range <br /> MTBE ND 50 42 84.0 20 - 110 <br /> Benzene ND 50 45 90.0 62 - 121 <br /> Toluene NO 50 48 96.0 66 - 136 <br /> Ethyi_Benzene ND 50 51 102 70 - 136 <br /> O-Xylene ND 50 49 98.0 74 - 134 <br /> M and P Xylene ND 1DO 95 95.0 77 - 140 <br /> Total Xylene ND I50 0 0 <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 t (Advisory)_ <br /> Result Recovery Result Recovery Difference RPD <br /> <2> <3> <1> <4> <1> <5> Max. Recovery Range <br /> MTBE 57 2G 76 95.0 62 25.0 * 117 * 20 39 - 150 <br /> BENZENE NO 20.0 19 95.0 14 70.0 30.3 * 25 39 - 150 <br /> TOLUENE ND 20.0 19 95.0 14 70.0 30.3 * 26 56 - 134 <br /> ETHYL BENZENE ND 20.0 19 95.0 13 65.0 37.5 38 61 - 128 <br /> O-XYLENE ND 20.0 19 95.0 14 70.0 30.3 * 29 40 - 130 <br /> M AND P XYLENE ND 40.0 35 87.5 26 65.0 29.5 * 20 43 - 152 <br /> Analyst: DAO * Values Outside QC Range. < - Data outside Method Specification limits. <br /> Sequence Date: 05/31/97 NC - Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked: 9705C92-OIA ND a Not Detected/Below Detection Limit <br /> Sample File ID: 0OF704I.TXO t Recovery [( <1> - <2> ) / <3> ) x 100 <br /> Method Blank File ID: LCS t Recovery c (<1> / <3> ) x 100 <br /> Blank Spike File ID: OOF7036.TXO Relative Percent Difference - 1 (<4> - <5> 1 / ((<4> + <5> x 0.51 x 100 <br /> Matrix Spike File ID: 0OF7051.TXO (**} Source: SPL-Houston Historical Data (4th Q 195) <br /> Matrix Spike Duplicate File ID: 0OF7052.TXO (*+*} Source: SPL-Houston Historical Data (3rd Q 196) <br /> SAMPLES IN BATCH(SPL ID): 9705C44-02A 9705C44-03A 9705044-04A 97051)01-06B <br /> 9705DOI-04B 9705DOI-03B 9705DOI-10B 9705F10I-12B <br /> 9705D01-11B 9705C92-01A 9705C92-02A 9705C92-04A <br /> 9705092-05A 9705092-06A 9705879-OIA 9705DOI-01B <br />