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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: Metals by Method 2001,Dissolved WorkOrder: 10030200 <br /> Method: E200.7 Lab Batch ID: 98359 <br /> Method Blank Samples in Analytical Batch: <br /> RunID: ICP2_100309A-5424436 Units: mg/L Lab Sample ID Client Sample ID <br /> Analysis Date: 03/10/2010 7:36 Analyst: EG 10030200-01F MW-2 <br /> Preparation Date: 03/09/2010 10:00 Prep By: M_ Method E200.7/200.8 10030200-03E MW-5 <br /> 10030200-04E MW-6R <br /> Analyte ResuND[Qual Rep Lo it —6-006 <br /> �pn . .Macanese - NDI 0.01L_ 0.0003. <br /> Laboratory Control Sample(LCS) <br /> RunID: ICP2_100309A-5424437 Units: mg/L <br /> Analysis Date: 03/10/2010 7:41 Analyst: EG <br /> Preparation Date: 03/09/2010 10:00 Prep By: M_ Method E200.7/200.8 <br /> Analyte J Spike Result Percent Qual Lower I Upper <br /> Added Recovery Limit Limit <br /> Iron 1 000 1 079 107 9 85 115 <br /> ;Manganese 1.000 1.090, 109.0 85 1151 <br /> Matrix Spike(MS)/Matrix Spike Duplicate(MSD) <br /> Sample Spiked: 10030200-01 <br /> RunID: ICP2_100309A-5424439 Units: mg/L <br /> Analysis Date: 03/10/2010 7:52 Analyst: EG <br /> Preparation Date: 03/09/2010 10:00 Prep By: M_ Method E200.7/200.8 <br /> Analyte I Sample�Smp MS MS MS% MS T MSD MS MSD%]MSD RPD RPD RPD Low High <br /> Result Qua[ Spike Result Rcvry Qual J Spike Result Rcvry Qual Qual Limit Limit Limit <br /> Added f Added <br /> Iron 0 01120 J 11.011 99.98 1 1.035 102.4 2.346 ! 20 70 130 <br /> - - — <br /> Manganese 4.944 1 5.759 N/C 1 6.004 N/C N/C 20 70 130 <br /> L _f __ _f ___ 1_ <br /> Qualifiers: ND/U-Not Detected at the Reporting Limit MI-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 4/9/2010 2:31:16 PM <br /> calculated by the SPL LIMS system are derived from QC data prior to the application of rounding rules. <br />