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SPL BATCH QUALITY CONTROL REPORT ** HOUSTON LABORATORY <br /> California LUFT Manual for Gasoline 8880 $NTERCHANGE DRIVE <br /> HOUSTON TEXAS 77054 <br /> 'Wd4 (e) <br /> Batch Id VARE980323030900 <br /> PHONE E713) 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> V t Recovery Range <br /> Gasoline Range Organics ND 0 9 0 92 102 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 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 I Recovery Range <br /> GASOLINE RANGE ORGANICS 0 17 0 90 1 2 114 0 76 65 6 53 9 * 36 36 - 160 <br /> * Values outside QC Range due to Matrix Interference (except RPD) <br /> Analyst VHZ a = Data outside Method Specification limits <br /> Sequence Date 03/23/98 NC - Not Calculated (Sample exceeds spike by factor of 4 or morel <br /> SPL ID of sample spiked 9803274-01A ND = Not Detected/Below Detection Limit <br /> Sample File ID EEC4006 TXO % Recovery = i( <1> - <2> ) / <3> ] x 100 <br /> Method Blank File ID LCS t Recovery = (<1> / <3> ) x 100 <br /> .lank Spike File ID EEC4001 TXO Relative Percent Difference - (<4> [(<4> + <5> I x 0 51 x 100 <br /> Matrix Spike File ID EEC4003 TXO (`*) Source SPL-Houston Historical data list Q '97) <br /> Matrix Spike Duplicate File ID EEC4004 TX0 Source SPL-Houston Historical Data (1st Q 197) <br /> SAMPLES IN BATCH(SPL ID) 9803274-04A 9803984-01A 9803984-02A 9803984-03A <br /> 9803984-04A 9803984-07A 9803984-OBA 9603274-01A <br /> 9803274-02A 9803274-03A <br />