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* SPL BATCH QUALITY CONTROL REPORT ** <br /> HOUSTON LABORATORY <br /> California LUFT Manual for Gasoline 8880 INTERCHANGE DRIVE <br /> HOUSTON TEXAS 77054 <br /> x queous Batch Td HP_S991021031500 PHONE(713)660-0901 <br /> Units mg/L <br /> L A B O R A T O 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_ QC Limits(**) <br /> C 0 M P O U N D S Blank Result Added Result Recovery (Mandatory) <br /> <2> <3> <1> % ' Recovery Range <br /> Gasoline Range Organics ND 1 0 0 79 79 0 64 - 131 <br /> M A T R I X S P I K E S <br /> 5 P I K ESample 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> <1> <5> Max Recovery Range <br /> GASOLINE RANGE ORGANICS ND 0 90 0 55 61 1 0 56 62 2 1 78 36 36 - 360 <br /> " = Values outside QC Range due to Matrix Interference (except RPD) <br /> Analyst LJ « = Data outside Method Specification limits <br /> Sequence Date 10/21/99 NC = Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked 99100220-10 ND Not Detected/Below Detection Limit <br /> Sample File ID SSJ3121 TXO % Recovery = {( <1> - <2> ) / <3> 1 x 100 <br /> Method Blank File ID LCS % Recovery = (<1> / <3> } x 100 <br /> ink Spike File ID SSJ3113 TXO Relative Percent Difference 1 (<4> - <5> ' / [(<4> + <5> ) x 0 57 x 100 <br /> trix Spike File ID SSJ3115A TXO Source SPL-Houston Historical data (1st Q 197) <br /> Matrix Spike Duplicate File ID SSJ3117 TXO (***} r Source SPL-Houston Historical Data (1st Q 197) <br /> SAMPLES IN BATCH(SPL ID) 9910539-01A 9910456-148 9910456-03A <br />