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ENERGY <br />LABORATORIES <br />Client: Cotter Corporation <br />www.energylab.com <br />Analytical frralls u Slag 1952 <br />Project: Schwartz SW 7/13/11 S25884- S25886 Work Order: C11070522 <br />Analyte <br />Qualifiers: <br />Count Result Units <br />Helena, MT 877 472 - 0711 e Billings, MT 800 - 735 - 4489 ® Casper, WY 888 235 - 0515 <br />Gillette, WY 866 - 686 - 7175 o Rapid City, SO 888 672 - 1225 • College Station, TX 888 - 690 - 2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 08/10/11 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E300.0 <br />Sample ID: ICV 110715 2 Initial Calibration Verification Standard <br />Chloride 9.93 mg /L 1.0 99 90 110 <br />Sulfate 39.8 mg /L 1.0 99 90 110 <br />Analytical Run: IC2- C_110715A <br />07/15/11 14:03 <br />Batch: R148207 <br />07/15/11 14:19 <br />Method: E300.0 <br />Sample ID: ICB 110715 2 Method Blank Run: IC2- C_110715A <br />Chloride 0.07 mg /L 0.04 <br />Sulfate ND mg /L 0.1 <br />Sample ID: LFB 110715 2 Laboratory Fortified Blank Run: IC2- C_110715A 07/15/11 14:34 <br />Chloride 9.87 mg /L 1.0 98 90 110 <br />Sulfate 39.7 mg /L 1.0 99 90 110 <br />Sample ID: C11070502 007AMS 2 Sample Matrix Spike Run: IC2- C_110715A 07/16/11 09:04 <br />Chloride 85.5 mg /L 1.0 80 120, A <br />Sulfate 39.2 mg /L 1.0 101 80 120 <br />Sample ID: C11070502 007AMSD 2 Sample Matrix Spike Duplicate Run: IC2- C_110715A 07/16/11 09:20 <br />Chloride 85.7 mg /L 1.0 80 120 0.3 10 A <br />Sulfate 39.9 mg /L 1.0 103 80 120 1.7 10 <br />RL - Analyte reporting limit. A - The analyte level was greater than four times the spike level. In <br />accordance with the method % recovery is not calculated. <br />ND - Not detected at the reporting limit. MDC - Minimum detectable concentration <br />Page 17 of 28 <br />