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** PL BATCH QUALITY CONTROL REPORT ** <br /> California LUFT Manual for Gasoline HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> QQ HOUSTON, TEXAS 77054 <br /> Z� MAO a9z Batch Id: HP_5980925100190 PHONE(713)660-0901 <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 Reault Added Result Recovery (mandatory) <br /> rY <br /> <2> <3> <1> % t Recovery Range <br /> Gasoline Range Organics NO 1.0 0.78 78.0 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 MSO Spike MS <br /> P� / 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 ND 0.90 0.84 93.3 0.84 93.3 L <br /> 0 36 36 - 160 <br /> * = Values outside QC Range due to Matrix Interference (except RPD) <br /> Analyst: YN « = Data outside Method Specification limits. <br /> Sequence Date: 09/25/98 NC - Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked: 9809792-03A ND = Not Detected/Below Detection Limit <br /> Sample File ID: SS13199.TXO % Recovery = (( <1> - <2> ) / <3> 1 x 100 <br /> Method Blank File ID: LCS %' Recovery - (<1> / <3> ) x 100 <br /> Blank Spike File ID: SS13192-TXO Relative Percent Difference 1 (<4> - <5> / ((<4> + <5> ) x 0.51 x 100 <br /> Matrix Spike File ID: SSI3196.TX0 (**) = Source: SPL-Houston Historical data (1st Q 197) <br /> Matrix Spike Duplicate File 10: SSI3197.TXO (***) = Source: SPL-Houston Historical Data (1st Q '97) <br /> SAMPLES IN BATCH SPL ID) : 9809911-07A 9809911-05A 9809911-06A 9809787-02A <br /> 9809787-04A 9809787-05A 9809787-06A <br />