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ENERGY <br />www.energylab.com <br />Asslytleal Enema Slaw 1152 <br />J <br />Helena, MT 877-472-0711 • Billings, MT 680 -735 -4489 • Casper, WY 888- 235 -0515 <br />Gillette, WY 866 -686 -7175 • Rapid City, SD 888- 672 -1225 • College Station, TX 888 -689 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 06/06/12 <br />Project: Schwartz GW 4/24/12 S26350 Work Order: C12041245 l <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Dual <br />Method: E300.0 <br />Sample ID: ICV- 042712 -10 2 Initial Calibration Verification Standard <br />Chloride 10.0 mg /L 1.0 100 90 110 <br />Sulfate 40.1 mg /L 1.0 100 90 110 <br />Analytical Run: IC2- C_120427A <br />04/27/12 19:33 <br />Method: E300.0 Batch: R159015 <br />Sample ID: ICB -042712 -11 2 Method Blank Run: IC2- C_120427A 04/27/12 19:49 <br />Chloride ND mg /L 0.03 <br />Sulfate 0.2 mg /L 0.10 <br />Sample ID: LFB- 042712 -12 2 Laboratory Fortified Blank Run: IC2- C_120427A 04/27/12 20:06 <br />Chloride 10.0 mg /L 1.0 100 90 110 <br />Sulfate 39.9 mg /L 1.0 99 90 110 <br />Sample ID: C12041224 -004AMS 2 Sample Matrix Spike Run: IC2- C_120427A 04/28/12 08:57 <br />Chloride 26.2 mg /L 1.0 103 90 110 <br />Sulfate 204 mg /L 1.6 93 90 110 <br />Sample ID: C12041224 - 004AMSD 2 Sample Matrix Spike Duplicate Run: IC2- C_120427A 04/28/12 09:14 <br />Chloride 26.2 mg /L 1.0 103 90 110 0.1 10 <br />Sulfate 203 mg /L 1.6 92 90 110 0.5 10 <br />Sample ID: LCS - 33433 2 Laboratory Control Sample Run: IC2- C_120427A 04/28/12 18:23 <br />Chloride 10.3 mg /L 1.0 102 90 110 <br />Sulfate 49.7 mg /L 1.0 94 90 110 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 12 of 19 <br />