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SPL BATCH QUALITY CONTROL REPORT ** HOUSTON LABORATORY <br /> CA LUFT 8880 INTERCHANGE DRIVE <br /> MA04roz 0 HOUSTON,TEXAS 77054 <br /> Matrix: Aqueous Batch Id: HP_N961121175200 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 Result Added Result Recovery (Mandatory) <br /> <2> <3> <1> t 1 Recovery Range <br /> Petroleum Hydrocarbons-Gas ND 1.0 1.0 100 50 - 150 <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 Limitsf***) <br /> C O M P O U N D S Results Added Duplicate Relative 4 (Advisory) <br /> Result Recovery Result Recovery Difference RPD <br /> <2> c3> <1> <4> <1> <5> Max. Recovery Range <br /> PETROLEUM HYDROCARBONS-GAS 0.13 0.9 1.0 96.7 0.98 94.4 2.41 50 50 - 150 <br /> Analyst: RL * = Values outside QC Range <br /> Sequence Date: 11/21/96 NC = Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked: 9611854-OIA ND = Not Detected/Below Detection Limit <br /> Sample File ID: NWK088.TX0 Recovery [f cl> - <2> } / <3> 1 x 100 <br /> Method Blank File ID: LCS % Recovery = (<1> / <3> I x 100 <br /> Blank Spike File ID: NN6K080.TX0 Relative Percent Difference (<4> - <5> / [(<4> + <5> ) x 0.51 x 100 <br /> Matrix Spike File ID: NN6K083.TXO (**) - Source: Temporary Limits • <br /> Matrix Spike Duplicate File ID: NN61<084=0 (***) = Source: Temporary Limits <br /> SAMPLES IN BATCH(SPL IDI: 96111368-01A 9611852-02A 9611852-03A 9611854-02A <br /> 9611854-03A 9611911-OIA 9611911-02A 9611911-05A <br /> 9611911-04A 9611911-03A 9611911-07A 9611911-08A <br /> 9611911-06A 961LB68-02A 9611B68-03A 9611854-01A <br /> i <br />