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* SPL BATCH QUALITY CONTROL REPORT ** PAG'�iOUSTON LABORATORY <br /> Modified 8015 - Gasoline 8880 INTERCHANGE DRIVE <br /> HOUSTON TEXAS 77054 <br /> Matrix Aqueous Batch Id HP N960411125700 PHONE(713) 660-0901 <br /> Units mg/L <br /> L A B 0 R A T 0 R Y C 0 N T R 0 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> cl> Recovery Range <br /> Gaselxne Petr Hydrocarbon ND 1 0 0 76 76 0 56 - 130 <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> cl> <5> Max Recovery Range <br /> GASOLINE PETR HYDROCARBON ND 0 9 0 62 68 9 0 66 73 3 6 19 22 37 - 169 <br /> Analyst VHZ * Values Outside QC Range <br /> Sequence Date 04/11/96 NC = Not Calculated (Sample exceeds spike by factor of 4 or mare) <br /> SPL ID of sample spiked 9604286-01A ND - Not Detected/Below Detection Limit <br /> Sample File ID NN-054 TXO t Recovery - [( <1> - <2> ) / <3> ] x 100 <br /> Method Blank File ID LCS k Recovery = (<1> / <3> ) x 100 <br /> ank Spike File ID NN 046 TXO Relative Percent Difference (<4> - <5> / [(<9> + <5> } x 0 51 x 100 <br /> trix Spike File ID NN 050 TXO (`*} Source SPL-Houston Historical data (3rd Q '95) <br /> Matrix Spike Duplicate File ID NN-051 TXO (•**) a Source SPL-Houston Historical Data (3rd Q 195) <br /> SAMPLES IN BATCH(SPL ID) 9604286-05A 9604286-06A 9604286-09A 9604286-04A <br /> 9604286-07A 9604286-03A 9604098-04A 9604098-IOA <br /> 9604100-OSA 9604100-06A 9604286-02A 9604286-OBA <br /> 9604266-10A 9604286-11A 9604286-12A 9604286-13A <br /> 9604279-OIA 9604286-OIA <br /> QC Officer <br />