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SPL BATCH QUALITY CONTROL REPORT *� HOUSTON LABORATORY <br /> California LUFT Manual for Gasoline <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON, TEXAS 77054 <br /> Batch Id: VARE980516114600 PHONE(713)660-0901 <br /> Units: mg/L <br /> r ; <br /> L A B O R A T O R Y C 0 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 0 U N D S Blank Result Added Result Recovery (Mandatory) <br /> _. y <br /> <2> <3> <1> % % Recovery Range <br /> .o-:1 Gasoline Range Organics ND 1.0 0.90 90.0 64 - 131 <br /> M A T R I X S P I K E S <br /> S P 1 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 % (Advisory) _ <br /> Result Recovery Result Recovery Difference RPD <br /> <2> <3> <1> <4> <1> <5> Max. Recovery Range <br /> GASOLINE RANGE ORGANICS ND0.90 0.65 72.2 0.54 60.0 18.5 36 36 - 160 <br /> Values outside QC Range due to Matrix Interference (except RPD) <br /> Analyst: HS <c = Data outside Method Specification limits. <br /> { Sequence Date: 05/16/98 NC = Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked: 9805408-02H ND = Not Detected/Below Detection Limit <br /> Sample File ID: EEE2263.TX0 % Recovery = l( <1> - <2> ) / <3> I x 100 <br /> .-..Aethod Blank File ID: LCS Y Recovery = (<l> / <3> ) x 100 <br /> '>lank Spike File ID: EEE2250.TX0 Relative Percent Difference = 1(<4> - <5> 1 / ((<4> + <5> ) x 0.51 x 100 <br /> =3 Matrix Spike File 1D: EEE2279.TX0 (**) = Source: SPL-Houston Historical data (1st Q 197) <br /> Matrix Spike Duplicate Fite ID: EEE2280.TX0 ("*") = Source: SPL-Houston Historical Data (1st Q 197) <br /> SAMPLES IN BATCH(SPL ID): 9805381-09A 9805381-10A 9805371-04B 9805408-02H <br /> 9805381-05A 9805381-06A 9805381-07A 9805381-08A <br /> `I <br />