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Z SPL BATCH QUALITY CONTROL REPORT *• HOUSTON LABORATORY <br /> CA LUFT 8880 INTERCHANGE DRIVE <br /> ® HOUSTON,TEXAS 77054 <br /> Matrix: Aqueous Batch Id: HP_N970403122800 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 R Method Spike _ Blank Spike OC Limits(*-) <br /> C O M P O U N D S Blank Result Added Result Recovery (Mandatory) <br /> <2> <3> <1> !k V Recovery Range <br /> Petroleum Hydrocarbons-Gas ND 1,0 0.74 74.0 50 - 150 <br /> M A T R I X S P I K E S <br /> S P I K H 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 JRecovery Result Recovery Difference RPD <br /> <2> <3> <1> <4> <1> <5> Max. Recovery Range <br /> LOLUM HYDROCARBONS-GAS 0.47 0.90 1.5 114 1.4 103 20.1 50 50 - 150 <br /> Analyst: fab * - Values Outside QC Range. c = Data outside Method Specification limits. <br /> Sequence Date: 04/03/97 NC Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked: 9703F55-02A NO Not Detected/Below Detection Limit <br /> Sample File ID: NND7098.TX0 % Recovery . [( <1> - <2> ) / <3> ] x 100 <br /> Method Blank File ID: LCS % Recovery . (<1> / <3> ) x 100 <br /> Blank Spike File ID: NND7093.TX0 Relative Percent Difference = I (<4> - <5> I / [(<4> + <5> ) x 0.51 x 100 <br /> Matrix Spike File ID: NND7096.TX0 (**) • Source: Temporary Limits <br /> Matrix Spike Duplicate File ID: NND7097.TX0 (***) - Source: Temporary Limits <br /> SAMPLES IN BATCH(SPL ID): 9703F55-06A 9703F79-10A 9703E82-06A 9703E82-07A <br /> 9704053-01A 9704053-02A 9703F80-03A 9703F80-04A <br /> 9703FBO-02A 9703F55-07A 9703F55-09A 9703F80-05A <br /> 9703F55-02A 9703FSS-03A 9703F55-04A 9703F55-05A <br />