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** SPL BATCH QUALITY CONTROL REPORT PAGE 1 <br /> METHOD 8020 <br /> O <br /> Matrix: Aqueous Batch Id: HP U941215235400 <br /> Units_ Kg/L <br /> L A B 0 R A T 0 R T 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> % x Recovery Range <br /> Benzene ND SO 53 106 54 - 126 <br /> Toluene HD 50 50 100 61 - 125 <br /> EthylBenzene ND 50 a f 96.0 57 - 129 <br /> 0 Xytene ND 50 49 98.0 32 - 160 <br /> M & P Xylene NO 100 110 110 32 - 160 <br /> M ATR 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 _ OwLicate Relative % (Advisory) <br /> Result Recovery Result Recovery Difference RPD <br /> <2> <3> <1> 44> <1> <5> Nax. Recovery Range <br /> Benzene ND 20 21 105 20 100 4.88 19 61 - 131 <br /> Toluene ND 20 20 100 19 95.0 5.13 18 57 - 127 <br /> EthyLBenzene ND 20 20 100 19 95.0 5.13 18 55 - 131 <br /> 0 Xylene NO 20 20 100 20 100 0 20 40 - 130 <br /> M & P Xylene NR 40 41 102 38 95.0 7.11 16 43 - 152 <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-OIA NO = Not Detected/Below Detection Limit <br /> Sample Fite ID U_551.TXO % Recovery = [( <1> - 42> ) / <3> ) x 100 <br /> Method Blank File ID: LCS % Recovery = (<1> / <3> ) x 100 <br /> Blank Spike File ID: U_543.TX0 Relative Percent Difference = 1(<4> - <5> , / E(<4> + <5> ) x 0.51 x 100 <br /> Matrix Spike Fite ID U_563.TXO (**) = Source: SPL-Houston Historical Data <br /> Matrix Spike Duplicate File ID: UT564.TX0 (***) = Source: SPL-Houston Historical Data <br /> SAMPLES IN BATCH(SPL In: 9412536-03A 9412475-05A 9412475-06A 9412475-07A <br /> 9412475-08A 9412475-09A 9412475-10A 9412474-OIA <br /> 9412474-OZA 9412474-03A 9412536-04A 9412529-04A <br /> 9412536-02A 9412536-01A 9412529-07A 9412529-06A <br /> 9412529-05 94 29 0 2 02A 9412529-01A <br /> i <br /> Ideli tililliams, QC Officer <br />