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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> ® HOUSTON,TX 77054 <br /> Quality Control Report (713)660-0901 <br /> ATC Associates, Inc. <br /> 090.38083.0060/Crop Production Services <br /> Analysis: EDB,DBCP and 1,2,3-Trichlorpropane WorkOrder: 10030200 <br /> Method: E504.1 Lab Batch ID: R297415 <br /> Method Blank Samples in Analytical Batch: <br /> RunID: HP_M_100309A-5424707 Units: ug/L Lab Sample ID Client Sample ID <br /> Analysis Date: 03/09/2010 17:00 Analyst: AR 10030200-01D MW-2 <br /> 10030200-03C MW-5 <br /> 10030200-04C MW-6R <br /> -- - - 10030200-05D MW-7 <br /> Analyte Result Qual lRep Limit` MDL <br /> 1,2-1) -3-chloropropane ND 0025__ 0.00331 <br /> 1 2-Dibromoethane ND 0.025 0 0082, <br /> �� �- <br /> Surr:t-Chloro-2-fluorobenzene 102.2_ i 69-14� <br /> Laboratory Control Sample/Laboratory Control Sample Duplicate(LCS/LCSD) <br /> RunID: HP_M_100309A-5424721 Units: ug/L <br /> Analysis Date: 03/09/2010 21:29 Analyst: AR <br /> Added Spike Result Recovery Added Spike Result Percent i Limit Limit <br /> Analyte LCS LCS LCS LCSD LCSD LCSD RPD RPD Lower Upper , <br /> Limit <br /> 1 2-Dibromo-3-chloropropane 0.500 0.609'_- 122-----0.500---- 0-.-5-98----Recov 1201— 1.8� 20 701 1301 <br /> -- <br /> 0.500 ——� <br /> 1,2-Dibromoethane ' 0.532 106 0.500 0.528 106 0.8 20 70 1301 <br /> -- — - — - - — — - <br /> Surr. 1-Chloro 2-fluorobenzene 100 95.7 95.7 100 93.9 93.9 1.9 30} 69' 144 <br /> Matrix Spike(MS)/Matrix Spike Duplicate(MSD) <br /> Sample Spiked: 10030224-09 <br /> RunID: HP_M_100309A-5424717 Units: ug/L <br /> Analysis Date: 03/09/2010 20:45 Analyst: AR <br /> Analyte Sample Smp MS MS SMS% MS MSD MSD MSD% MSD r RPD RPD�RPD Low�Hi h <br /> Result Qual Spike Result Rcvry Qua[ Spike Result RcvryyQual Qual Limit I Limit I Limit <br /> Added Added <br /> 1,2-Dibromo-3-chloropropane ND L O.L0704 141 *- 0.5 0.702 140 0.284 20' 65 135 <br /> �1 2-Dibromoethane 0.0290E 0.5� 0.675 129 0.5 0.672 134 0.356 201 52 148 <br /> - — - — 0. — - -- } - r <br /> Surr: 1-Chloro-2-fluorobenzene ND 100 103 103 100E 103 103 0.0698 30 69 144 <br /> — -- _._ �_�_ <br /> Qualifiers: ND/U-Not Detected at the Reporting Limit Ml--Matrix Interference <br /> E-Estimated Value exceeds calibration curve D-Recovery Unreportable due to Dilution <br /> J-Estimated value between MDL and PQL `-Recovery Outside Advisable QC Limits <br /> B-Analyte Detected In The Associated Method Blank <br /> N/C-Not Calculated-Sample concentration is greater than 4 times the amount of spike added.Control limits do not apply. <br /> TNTC-Too numerous to count <br /> QC results presented on the QC Summary Report have been rounded.RPD and percent recovery values 4/9/20102:31:15 PM <br /> calculated by the SPL LIMS system are derived from QC data prior to the application of rounding rules. <br />