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SPL BATCH QUALITY CONTROL REPORT ** HOUSTON LABORATORY <br /> CA LUFT 8880 INTERCHANGE DRIVE <br /> O HOUSTON,TEXAS 77054 <br /> aqueous Batch Id: HP N970316012900 PHONE(713)660.0901 <br /> 7r__� — <br /> ?nits: 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 S ike QC Limits(**) <br /> C O M P O ? N D S Blank Result Added Result Recovery (Mandatory) <br /> <2> <3> <1> t t Recovery Range <br /> Petroleum Hydrocarbons-Gas ND 1.0 0.84 84.0 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 Limits(***) <br /> C O M P O U N D S Results Added Duplicate Relative It (Advisory) <br /> Result Recovery Result Recovery Difference RPD <br /> <2> <3> c1> <4> <1> <5> Max. Recovery Range <br /> PETROLEUM HYDROCARBONS-GAS ND 0.9 0.96 107 0.98 109 1.85 50 50 - 150 <br /> Analyst: WK * - Values Outside QC Range. - Data outside Method Specification limits. <br /> Sequence Date: 03/16/97 NC - Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked: 9703631-OSA ND . Not Detected/Below Detection Limit <br /> Sample File ID: NNC7539.TXO t Recovery - [( <1> - <2> ) / <3> ] x 100 <br /> Method Blank File ID: LCS t Recovery - (<1> / <3> ] x 100 <br /> Blank Spike File ID: NNC7532.TXO Relative Percent Difference - I (<4> - <5> I / [(<4> + <5> ) x 0.51 x 100 <br /> Matrix Spike File ID: NNC7535.TX0 (**) = Source: Temporary Limits <br /> Matrix Spike Duplicate File ID: NNC7536.TXO (***] Source: Temporary Limits <br /> SAMPLES IN HATCH(SPL ID) : 9703540-03A 9703540-04A 9703540-OSA 9703540-06A <br /> 9703540-07A 9703540-OSA 9703631-04A 9703631-OSA <br /> 9703540-01A 9703540-02A <br />