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** SPL BATCH QUALITY CONTROL REPORT ** HOUSTON LABORATORY <br /> California LUFT Manual for Gasoline 8880 INTERCHANGE DRIVE <br /> p HOUSTON, TEXAS 77054 <br /> Matrix: Aqueous Batch Id: HP 5980113224D00 PHONE(713)660-0901 <br /> Units: mg/L — <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 O M P O U N D S Blank Result Added Result Recovery (Mandatory) <br /> EY <br /> <2> <3> <1> % % Recovery Range <br /> Gasoline Range Organics NO 1.0 0.67 67.0 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 Du licate Relative % (Advisory) <br /> Result Recovery Result Recovery Difference RPO <br /> <2> <3> <1> <4> <1> <5> Max. Recovery Range <br /> GASOLINE RANGE ORGANICS ND 0.90 0.76 84.4 1 0.78 86.7 2.69 36 36 - 160 <br /> * = Values outside QC Range due to Matrix Interference (except RPD) <br /> Analyst: VHZ « = Data outside Method Specification limits. <br /> Sequence Date: 01/13/98 NC = Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked: 9801334-03A ND = Not Detected/Below Detection Limit <br /> Sample File ID: SSA2073.TXO % Recovery = U <1> - <2> ) / <3> ] x 100 <br /> Method Blank File ID: LCS % Recovery = (<l> / <3> ) x 100 <br /> Blank Spike File ID: SSA2065.TXO Relative Percent Difference = I(<4> - <5> / E(<4> + <5> ) x 0.51 x 100 <br /> Matrix Spike File ID: SSA2068.TXO (**) = Source: SPL-Houston Historical data (1st Q 197) <br /> Matrix Spike Duplicate File ID: SSA2069.TX0 (***) = Source: SPL-Houston Historical Data (1st Q 197) <br /> SAMPLES IN BATCH SPL ID): 9801349-01A 9801349-02A 9801349-03A 9801334-04A <br /> 9801334-02A 9801334-03A 9801334-01A <br /> M <br />