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+ PL BATCH QUALITY CONTROL REPORT ** <br /> Modified 8015H**x <br /> HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON,TEXAS 77054 <br /> O <br /> / -r Batch Id: HP 0980821102311 PHONE (713)660-0901 <br /> — <br /> Units: mg/kg <br /> L A B O R A T 0 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 /> c2> <3> <1> Y % Recovery Range <br /> Gasoline Range Organics ND 1.0 0.77 77.0 53 - 137 <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 4 (Advisory) <br /> Result Recovery Result Recovery Difference RPD <br /> <2> <3> <1> c4> <1> c5> Max. Recovery Range <br /> GASOLINE RANGE ORGANICS 0.05 0.9 0.77 80.0 1.0 105 28.0 50 36 - 163 <br /> * Values outside QC Range due to Matrix Interference lexcept RPD) <br /> Analyst: CS . = Data outside Method Specification limits. <br /> Sequence Date_ 08/21/98 NC = Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked: 9608718-01A ND - Not Detected/Below Detection Limit <br /> Sample File ID: OOH3224.TX0 W Recovery (I <1> - <2> ) / <3> ) x 100 <br /> Method Blank File ID; LCS % Recovery = (<l> / c3> ) x 100 <br /> Blank Spike File ID; OOH3218.TX0 Relative Percent Difference (<4> - <S> / [(<4> + <5> ) x 0.5) x 100 <br /> Matrix Spike File ID: OOH3244.TX0 (**) = Source: SPL-Houston Historical Data (1st O•197) <br /> Matrix Spike Duplicate File ID: 0OH3222.TX0 (***) = Source: SPL-Houston Historical Data(lst Q. 197) <br /> SAMPLES IN BATCHSSPL ID) ; 9808805-OIB 9808805-03B 9808805-04B 9808605-07B <br /> 9808805-0813 9808805-09B 98083BS-02A 9808718-OIA <br /> 9806718-05A 9808718-06A 9808718-07A 9808714-OIA <br /> is <br />