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HOUSTON LABORATORY <br /> �• SPL BATCH QUALITY CONTROL REPORT ** 8880 INTERCHANGE DRIVE <br /> ® Method 5030A/8020A *** HOUSTON TEXAS 77054 <br /> PHONE(713)660 0901 <br /> Matrix Aqueous Batch Id HP N970427115200 <br /> Units ug/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 Limit$(**) <br /> C 0 M P 0 U N D S Blank Result Added Result Recovery (Mandatory) <br /> <2> <3> <1> % t Recovery Range <br /> MTBE ND 50 46 92 0 20 - 110 <br /> Benzene ND 50 43 8 87 6 62 - 121 <br /> Chlorobenzene ND 50 45 1 90 2 55 - 135 <br /> 1,2-Dichlorobenzene ND 50 43 7 87 4 37 - 154 <br /> 1,3-Dichlcrobenzene ND SO 46 3 92 6 50 - 141 <br /> 1,4-Dichlorobenzene ND 50 47 8 95 6 42 - 143 <br /> EthylBenzene ND 50 45 90 0 70 - 136 <br /> Toluene ND 50 46 2 92 4 66 - 136 <br /> O Xylene ND 50 45 90 0 74 - 134 <br /> M & P Xylene ND 100 93 93 0 77 - 140 <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 O M P 0 U N D S Results Added Duplicate Relative t (Advisory) <br /> Result Recovery Result Recovery Difference RPD <br /> <2> <3> <1> <4> <1> <5> Max Recovery Range <br /> MTBE 57 20 204 735 * 237 900 + 20 2 * 20 39 - 150 <br /> BENZENE ND 20 16 80 0 17 85 0 6 06 25 39 - 150 <br /> CHLOROBENZENE ND 20 16 80 0 17 85 0 6 06 20 55 - 135 <br /> 1,2-DICHLOROBENZENE 1 6 20 18 82 0 16 72 0 13 0 20 37 - 154 <br /> 1,3-DICHLOROBENZENE 4 2 20 17 64 0 16 59 0 8 13 20 50 - 141 <br /> 1,4-DICHLOROBENZENE ND 20 17 85 0 16 80 0 6 06 20 42 - 143 <br /> ETHYLBENZENE ND 20 17 85 0 16 80 0 6 06 38 61 - 128 <br /> TOLUENE ND 20 18 90 0 17 85 0 S 71 26 56 - 134 <br /> 0 XYLENE ND 20 17 85 0 17 85 0 0 29 40 - 130 <br /> M E, p XYLENE ND 40 34 85 0 34 BS 0 0 20 43 - 152 <br /> i <br />