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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 /> Aqueous Batch Id HP_8990922170501 PHONE(713)660-0901 <br /> Units mg/L <br /> L A B O R A T O R Y C O N T R O 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> <1> % %- Recovery Range <br /> Gasoline Range Organics ND 1 0 0 63 83 0 64 - 131 <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 OC Limits(***) <br /> C O M P O U N D S Results Added Duplicate Relative k (Advisory) <br /> Result Recovery Result Recovery Difference RPD <br /> <2> <3> cl> <4> <1> <5> Max Recovery Range <br /> GASOLINE RANGE ORGANICS 2 4 0 90 2 9 55 6 3 0 66 7 18 2 36 36 - 160 <br /> * Values outside QC Range due to Matrix Interference (except RPD) <br /> Analyst WLR a = Data outside Method Specification limits <br /> Sequence Date 09/22/99 NC = Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked 9909515-05A ND = Not Detected/Below Detection Limit <br /> Sample File ID SSI3121 TXO W Recovery - [( <1> - <2> ) / <3> ) x 100 <br /> Method Blank File ID LCS 96 Recovery = (<1> / <3> 1 x 100 <br /> Blank Spike File ID SSI3112 TRO Relative Percent Difference = 1 (<4> - <5> 1 / [(<4> + <5> ) x 0 53 x 100 <br /> Matrix Spike "File ID SSI3116 TKO (**) Source SPL-Houston Historical data (1st Q 197) <br /> Matrix Spike Duplicate File ID SSI3117 TXO (***} Source SPL-Houston Historical Data (1st Q 197) <br /> SAMPLES IN BATCH(SPL ID) 9909574-04A 9909574-05A 9909623-11A 9909624-12A <br /> 9909626-10A 9909574-OIA 9909574-02A 9909574-03A <br />