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* SPL BATCH QUALITY CONTROL REPORT ** HOUSTON LABORATORY <br /> California LUFT Manual for Gasoline 8880 INTERCHANGE DRIVE <br /> 1/10A rA114 lieHOUSTON TEXAS 77454 <br /> �" PHONE(713) 660-4901 <br /> Matrix Soil Batch Id HP_0991018175000 <br /> Units mg/kg <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> t t Recovery Range <br /> Gasoline Range Organics ND 1 0 0 79 79 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 S Results Added Duplicate Relative 3 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 83 92 2 0 72 60 0 14 2 50 36 - 163 <br /> * Values outside QC Range due to Matrix Interference (except RPD) <br /> Analyst fab < = Data outside Method Specification limits <br /> Sequence Date 10/18/99 NC = Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked 9910437-01A ND = Not Detected/Below Detection Limit <br /> Sample File ID OOJ3019 TRO t Recovery = [( <1> - <2> ) / <3> 1 x 100 <br /> 4 thod Blank File ID LCS t Recovery = (<1> / <3> ) x 100 <br /> ank Spike File ID OOJ3013 TXO Relative Percent Difference = 1 (<4> - <5> / [(<4> + <5> ) x 0 51 x 100 <br /> Matrix Spike File ID OOJ3016 TXO (**) = Source SPL-Houston Historical Data (1st Q 197) <br /> Matrix Spike Duplicate File ID OOJ3017 TX0 (**') Source SPL-Houston Historical Data (1st Q 197) <br /> SAMPLES IN BATCH(SPL ID) 9910418-09A 9910418-IIA 9910418-19A 9910418-25A <br /> 9910313-03A 9910418-03A 9910313-14A 9910313-20A <br />