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SPL BATCH QUALITY CONTROL REPORT '• HOUSTON LABORATORY <br /> Method Modified 6015A--• for Gasoline 8880 INTERCHANGE DRIVE <br /> HOUSTON.TEXAS 77054 <br /> triz: Aqueous <br /> 0 Batch Id: HP 13971022114500 PHONE(713)660-0901 <br /> _ <br /> Units: mg/7, �+✓ <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 0.87 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 Limitsi—) <br /> C O M P O U N D S Results Added Duplicate Relative t (Advisory) <br /> Result Recovery Result Recovery Difference RPD <br /> <2> <3> <1> <4> <1> <5> Max. Recovery Range <br /> GASOLINE RANGE ORGANICS ND 0.9 0.99 110 1.0 111 0.945 36 36 - 160 <br /> Analyst: MF - Values Outside QC Range. - Data outside Method Specification limits. <br /> Sequence Date: 10/22/97 NC - Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked: 9710805-09A ND - Not Detected/Below Detection Limit <br /> Sample File ID: UUJ7852.TXO k Recovery - (( <1> - c2> ) / <3> 1 x 100 <br /> Method Blank File ID: LCS i Recovery - (<1> / <3> ) x 100 <br /> Blank Spike File ID: UUJ786l.TX0 Relative Percent Difference - 1 (<4> - <5> I / ((<4> - <5> ) x 0.51 x 100 —*h <br /> Matrix Spike File ID: UUJ7865.TXO (") - Source: SPL-Houston Historical data (1st Q 197) <br /> Matrix Spike Duplicate File ID: UUJ7866.TXO I—) - Source: SPL-Houston Historical Data (1st Q 197) <br /> SAMPLES IN HATCH(SPL ID) : 9710855-04A 9710855-OSA 9710855-06A 9710877-04A <br /> 9710877-02A 9710877-03A 9710855-03A 9710855-01A <br /> 9710855-02A <br /> f'�t <br />