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SPL BATCH QUALITY CONTROL REPORT HOUSTON LABORATORY <br /> California LUFT Manual for Gasoline 8880 INTERCHANGE DRIVE <br /> O HOUSTON TEXAS 77054 <br /> PHONE(713)660-0901 <br />. Matrix Aqueous Batch Id VARE990111153800 <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 /> S P I K E Sample Spike Matrix Spike Matrix Spike MS/MSD QC Lxmlts(*") <br /> C o M P 0 U N D S Results Added DUPllcate. Relative } Adviso <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 58 64 4 0 60 66 7 3 S1 36 36 - 160 <br /> • - values outside QC Range due to Matrix Interference (except RPD) <br /> Analyst L3 - Data outside Method Specification limits <br /> Sequence Date 01./11/99 NC - Not Calculated (Sample exceeds spike by factor of 4 or morel <br /> SPL ID of sample spiked 9901279-02A ND = Not Detected/Below Detection Limit <br /> Sample File ID EEA2022 TXO % Recovery = (( <1> <2> ) / <3> 1 x 100 <br /> Method Blank File ID LCS } Recovery = (<1> / <3> 1 x 100 <br /> Blank Spike File ID EEA2015 TX0 Relative Percent Difference = 1 (<4> - <5> 1 / [(<4> - <5> 1 x 0 51 x 100 <br /> Matrix Spike File ID EEA2018 TXO S"1 = Source SPL-Houston Historical data (1st Q 97) <br /> Matrix Spike Duplicace File ID E£A2019 TXG Source SPL-Houston Historical Data (1st Q 197) <br /> SAMPLES IN BATCH SPL ID 9901280-04A 9901281-07A 9901279-01A 9901279-02A <br /> 9901280-OIA <br /> i <br />