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A <br /> SPL BATCH QUALITY CONTROL REPORT =- HOUSTON LABORATORY <br /> METHOD 8020 8880 INTERCHANGE DRIVE <br /> HOUSTON.TEXAS 77054 Md #A Fez <br /> a PHONE (713)660-0901 <br /> Matrix: Aqueous Batch Id: 14P_5990128104000 <br /> Units: ug/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> % Recovery Range <br /> MTBE ND 50 47 94.0 72 - 128 <br /> Benzene ND 50 49 98.0 61 - 1.1.9 <br /> Toluene ND 50 49 98.0 65 - 125 <br /> £thyl3enzene ND 50 49 98.0 70 - 118 <br /> 0 Xylene ND 50 5C 100 72 117 <br /> M & P Xylene ND 100 100 100 72 - 116 <br /> M A T R-1. X S P I K E S <br /> S P I x E Sample Spike Matrix Spike Matrix Spike MS/MSP OC Limits(***) <br /> C O M P O U N D S Results Added Duplicate Relative Adviso } <br /> Result Recovery Result Recovery Difference RPD <br /> <2> <3> <1> <4> <1> <5> Max. Recovery Range <br /> MTBE 30 20 51 105 48 90.0 15.4 20 39 - 150 <br /> BENZENE ND 20 23 115 23 115 0 21 32 - 164 <br /> 'TOLUENE ND 20 23 115 23 115 0 20 38 - 159 <br /> ETHYLBENZENE ND 20 22 11D 23 115 4 44 19 52 - 142 <br /> O XYLENE ND 20 22 110 23 115 4.44 is 53 - 143 <br /> M & P XYLENE ND 40 45 112 46 115 2.64 17 53 - 144 <br /> Values outside QC Range due Co Matrix Interference (except RPD} <br /> Analyst, CJ = = Data outside Method Specification limits. <br /> Sequence Date: 01/26/99 NC - Not Calculated (Sample exceeds spike by factor of 4 or more) <br /> SPL ID of sample spiked: 99CIB16-01A ND = Not Detected/Below Detection Limit <br /> Sample File ID: S_A4124.TXC % Recovery = (( <1> - <2> ) / <3> 1 x 100 <br /> Method Blank File ID: LCS % Recovery = (<1> / <3> ) x 100 <br /> Blank Spike File ID: S_A4102.TXD Relative Percent Difference = 1 (<4> - <5> 1 / ((<4> + <5> } x 0.51 x 100 <br /> Matrix Spike File ID: S_A4104,TX0 I+`I Source: SPL-Houston Historical Data (1st Q '97) <br /> Matrix Spike Duplicate File ID: S_A41D5.TX0 ('++1 = Source: SPL-Houston Historical Data (1st Q '97) <br /> SAMPLES IN BATCH(SPL ID)_ 99DIB16-01A 9901A30-08A 9901816-02A 9901A30-09A <br /> 9901816-12A 990JA21-05A 99DIA30-05A 9901A30-07A <br /> s <br />