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** SPL BATCH QUALITY CONTROL REPORT ** HOUSTON LABORATORY <br /> METHOD 8020*** 8880 INTERCHANGE DRIVE <br /> 0 HOUSTON, TEXAS 77054 40i a0z <br /> PHONE(713)660.0901 <br /> Matrix: Aqueous Batch Id: HP 5980117124000 <br /> Units: y,g/L <br /> L A B O R A T O R Y C O 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 0 M P 0 U N D S Blank Result Added Result Recovery (Mandatory) <br /> <2> <3> <1> % % Recovery Range <br /> MTBE NO 50 51 102 72 - 128 <br /> Benzene NO 50 56 112 61 - 119 <br /> Toluene NO 50 57 114 65 - 125 <br /> Ethyl Benzene NO 50 55 110 70 - 118 <br /> O-Xylene ND 50 57 114 72 - 117 <br /> M and P Xylene NO 100 110 110 72 - 116 <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 0 M P 0 U N D S Results Added _Duplicate Relative X Advisor <br /> Result Recovery Result Recovery Difference RPD <br /> <2> <3> <1> <4> <1> <5> Max. Recovery Range <br /> MTBE ND 20 23 115 21 105 9.09 20 39 150 <br /> BENZENE NO 20 23 115 22 110 4.44 21 32 164 <br /> TOLUENE ND 20 22 110 22 110 0 20 38 - 159 0 <br /> ETHYL—BENZENE ND 20 21 105 21 105 0 19 52 - 142 <br /> 0-XYLENE ND 20 22 110 22 110 0 18 53 143 <br /> M AND P XYLENE ND 40 43 108 43 108 0 17 53 - 144 <br /> * = Values outside QC Range due to Matrix Interference (except RPD) <br /> Analyst: HS « = Data outside Method Specification limits. <br /> Sequence Date: 01/17/98 NC = Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked: 9801580-02A ND = Not Detected/Below Detection Limit <br /> Sample File ID: S_A2166.TXO % Recovery = U <1> - <2> ) / <3> 7 x 100 <br /> Method Blank File ID: LCS % Recovery = (<l> / <3> ) x 100 <br /> Blank Spike File ID: S_A2159.TXO Relative Percent Difference = 1(<4> - <5> I / ((<4> + <5> ) x 0.57 x 100 <br /> Matrix Spike File ID: S_A2161.TXO (**) = Source: SPL-Houston Historical Data OST Q 197) <br /> Matrix Spike Duplicate File ID: S_A2162.TXO (***) = Source: SPL-Houston Historical Data (1ST 0 197) <br /> SAMPLES IN BATCH(SPL ID): 9801579-05A 9801579-06A 9801545-04A 9801349-07A <br /> 9801580-03A 9801580-05A 9801583-02A 9801583-03A <br /> 9801583-04A 9801583-05A 9801583-06A 9801583-07A <br /> 9801580-04A 9801580-02A 9801579-04A 9801580-01A <br /> 9801579-03A <br />