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** SPL BATCH QUALITY CONTROL REPORT *' PAGE 1 <br /> METHOD 8020/602 <br /> Matrix Aqueous Batch Id- HP_0950323071500 <br /> Unfits Icg/L <br /> L A B 0 R A T 0 R Y C 0 N T R 0 L S A M P L E <br /> S P I K E Method Spike Blank mike QC Limits(**) <br /> C 0 M P 0 U N D S Stank Result Added Result Recovery (Mandatory) <br /> <2> <3> <1> % % Recovery Range <br /> MTBE ND 50 30 60 0 56 - 135 <br /> Benzene ND 50 36 72 0 61 - 123 <br /> Toluene ND 50 36 72 0 62 - 122 <br /> EthylBenzene ND 50 37 74 0 56 - 119 <br /> 0 Xylene ND 50 35 70 0 32 - 160 <br /> M & P xylene ND 100 81 81 0 32 - 160 <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 OC Limits(***) <br /> C 0 M P 0 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 /> MTBE 36 20 63 135 63 135 0 20 39 - 150 <br /> Benzene 89 20 100 NC 110 NC NC 33 39 - 150 <br /> Toluene 2 20 15 65 0 16 70.0 7 41 35 56 - 134 <br /> Ethy[Senzene 49 20 62 65 0 65 80.0 20 7 40 61 - 128 <br /> 0 xylene ND 20 13 65 0 14 70.0 7 41 29 40 - 130 <br /> M & P xylene 9 40 38 72 5 37 70.0 3 51 20 43 - 152 <br /> Analyst VHZ * = Values Outside OC Range <br /> Sequence Date 03/23/95 NC = Not Calculated (Sample exceeds spike 6y factor of 4 or more) <br /> SPL IO of sample spiked 9503588-03A ND = Not Detected/Below Detection Limit <br /> Sample File ID 00183 TXO % Recovery = (( <1> - <2> ) / <3> ) x 100 <br /> Method Blank File ID LCS % Recovery = (<l> / <3> ) x 100 <br /> Blank Spike File ID 00170 TXO Relative Percent Difference = 1(<4> - <5> 1 / [(<4> + <5> ) x 0 51 x 100 <br /> Matrix Spike File ID 00_173 TXO (**) = Source SPL-Houston Historical Data <br /> Matrix Spike Duplicate File ID 00_174 TXO (***} = Source SPL-Houston Historical Data <br /> SAMPLES IN BATCH(SPL ID)- 9503750-09A 9503750-OSA 9503750-07A 9503750-06A <br /> 9503750-05A 9503750-04A 9503750-03A 9503750-02A <br /> 9503750-01A 9503750-11A <br /> Z <br /> Idelis Williams, QC Officer <br />