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�* SPL BATCH QUALITY CONTROL REPORT ** PAGE 1 <br /> Modified 8015 - Gasoline <br /> Matrix Aqueous Batch Id: HP_U941216122300 <br /> Units: 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 Spike QC Limits(**) <br /> C O M P O U N D S Blank Result Added Result Recovery (Mandatory) <br /> <2, <3> <1> % % Recovery Range <br /> Petroleum Hydrocarbons ND 0.9 0.83 92 2 56 - 139 <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/NSD 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 /> Petroleum Hydrocarbons 0.7 1 1.1 44 4 0.99 29.0 * 142.0 * 18 40 - 158 <br /> Analyst DAO * = Values outside QC Range <br /> Sequence Date 12/15/94 NC = Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked 9412529-02A ND = Not Detected/Below Detection Limit <br /> Sample File ID UU^552.TXO X Recovery = [( <1> - <2> ) / <3> ) x 100 <br /> Method Blank File ID: LCS % Recovery = (<12- / <3> ) x 100 <br /> Blank Spike File ID UU_544.TX0 Relative Percent Difference = 1(<4> - <5> / [(<4> + <5> ) x 0.51 x 100 <br /> Matrix Spike File ID: UU_562.TXO — C**) = Source SPL-Houston Historical Data <br /> Matrix Spike Duplicate file ID: UU 565 TXO (***) = Source- SPL-Houston Historical Data <br /> SAMPLES IN BATCH(SPL ID)- 9412536-03A 9412475-05A 9412475-06A 9412475-07A <br /> 9412475-08A 9412475-09A 9412475-10A 9412474-OIA <br /> 9412474-02A 9412474-03A 9412536-04A 9412529-04A <br /> 9412536-02A 9412536-OIA 9412529-07A 9412529-06A <br /> 9412529-05 412/529-0 9412529-0 9412529-01A <br /> Y • ( , <br /> Ideli williams, QC Officer <br />