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ENERGY <br />LABORATORIES <br />0 <br />www.energylab.com ` Helena, MT 871 -472 -0711 • Billings, MT 800 - 735 -4489 *Casper, WY 888- 235 -0515 <br />Aordytleal Excellence Since 1832 Gillette, WY 866 - 686 -7175 • Rapid City, SD 888- 672 -1225 • College Station, TX 888 -690 -2218 <br />Client: Cotter Corporation <br />Project: Schwartz SW 07/19/11 S25861- S25868 <br />Method: E300.0 <br />Sample ID: ICV- 110725 <br />Chloride <br />Sulfate <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />2 Initial Calibration Verification Standard <br />9.97 mg /L 1.0 100 90 110 <br />39.8 mg /L 1.0 99 90 110 <br />Method: E300.0 <br />Sample ID: ICB 110725 2 Method Blank Run: IC2- C_110725A <br />Chloride ND mg /L 3.0 <br />Sulfate ND mg /L 5.0 <br />Sample ID: LFB 110725 2 Laboratory Fortified Blank Run: IC2- C_110725A <br />Chloride 10.1 mg /L 1.0 101 90 110 <br />Sulfate 40.7 mg /L 1.0 102 90 110 <br />Sample ID: C11070766 002BMS 2 Sample Matrix Spike Run: IC2- C_110725A <br />Chloride 35.6 mg /L 1.0 92 80 120 <br />Sulfate 46.9 mg /L 1.0 102 80 120 <br />ND - Not detected at the reporting limit. <br />Report Date: 08/21/11 <br />Work Order: C11070766 <br />Analyte <br />Count Result Units <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Analytical Run: IC2- C_110725A <br />07/25/11 17:20 <br />Batch: R148571 <br />07/25/11 17:35 <br />07/25/11 17:51 <br />07/26/11 06:11 <br />Sample ID: C11070766 002BMSD 2 Sample Matrix Spike Duplicate Run: IC2- C_110725A 07/26/11 06:26 <br />Chloride 35.7 mg /L 1.0 93 80 120 0.2 10 <br />Sulfate 47.4 mg /L 1.0 104 80 120 1.0 10 <br />Page 22 of 38 <br />