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SPL BATCH QUALITY CONTROL REPORT ** HOUSTON LABORATORY <br /> California LOFT Manual for Gasoline 8880 INTERCHANGE DRIVE <br /> M40 MriQ HOUSTON,TEXAS 77054 <br /> PHONE(713)660.0901 <br /> Matrix: Aqueous Batch Id: VARE990329100300 <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 /> ry <br /> <2> <3> <1> % °s Recovery Range <br /> Gasoline Range Organics ND 1.0 0.93 93.0 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 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> <1> <4> <1> <5> Max. Recovery Range <br /> GASOLINE RANGE ORGANICS ND 0.90 0.74 82.2 0.74 62.2 D 36 36 - 160 <br /> * Values Outside QC Range due to Matrix Interference (except RPD) <br /> Analyst: LJ a = Data outside Method Specification limits- <br /> Sequence Date: 03/29/99 NC = Not Calculated (Sample exceeds spike by factor of 4 or morel <br /> SPL ID of sample spiked: 9903899-02A ND Not Detected/Below Detection Limit <br /> Sample File ID: EEC5013.1'X0 ; Recovery = [( <1> - <2> ) / <3> ] x 1GO <br /> Method Blank File ID: LCS !� Recovery = (<1> / <3> ] x 100 <br /> Blank Spike File ID: EEC5006.TX0 Relative Percent Difference = 1 (<4> - <5> / [(<4> + <5> 1 x 0.5) x 100 <br /> f r.. <br /> Matrix Spike File ID: EEC5009.TX0 {**} Source: SPL-Houston Historical data (1st Q 197) <br /> Matrix Spike Duplicate File ID: EEC5010.TXO <br /> P P I***1 = Source: SPL-Houston Historical Data (lst 0 197) <br /> SAMPLES IN BATCH(SPL ID) : 9903B99-05A 9903399-06A 9903B99-07A 9903899-08A <br /> 9903699-01A 9903899-D2A 9903899-03A 99031399-04A <br /> s <br />