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• www.energ0ab.com Helena, MT 877 - 472 -0711 • Billings, MT B00- 735 -4489 a Casper, WY 888- 235 -0515 <br />- balplMEW&lirac. RM Gillette, WY 866 -611116 -7115 • Rapid City, SO 888- 672 -1225 * College Station, TX 886 -690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 06/27/13 <br />Project: Schwartz SW 5/22/13 S26997 TH S26998 Work Order: C13050907 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E245.1 Analytical Run: CVAA_C203_130529A <br />Sample ID: ICV Initial Calibration Verification Standard 05/29/13 15:29 <br />Mercury 0.00499 mg /L 0.00020 100 90 110 <br />Method: E245.1 <br />Batch: 37671 <br />Sample ID: MB -37671 <br />Method Blank <br />Run: CVAA_C203_130529A <br />05/29/13 15:48 <br />Mercury <br />ND mg /L <br />7E -05 <br />Sample ID: LCS -37671 <br />Laboratory Control Sample <br />Run: CVAA_C203_130529A <br />05/29/13 15:49 <br />Mercury <br />0.00520 mg /L <br />0.00010 <br />104 <br />80 120 <br />Sample ID: C13050817- 001BMSD <br />Sample Matrix Spike Duplicate <br />Run: CVAA_C203_130529A <br />05/29/13 15:59 <br />Mercury <br />0.00507 mg /L <br />0.00010 <br />101 <br />70 130 2.9 <br />10 <br />Sample ID: C13050817 -001 BMS <br />Sample Matrix Spike <br />Run: CVAA_C203_130529A <br />05/29/13 16:14 <br />Mercury <br />0.00493 mg /L <br />0.00010 <br />99 <br />70 130 <br />Method: E245.1 <br />Batch: R174153 <br />Sample ID: IPC <br />Instrument Performance Check <br />Sample <br />Run: CVAA_C203_130529A <br />05/29/13 15:33 <br />Mercury <br />0.00511 mg /L <br />0.00020 <br />102 <br />95 105 <br />Qualifiers: <br />RL - Analyte reporting limit ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 19 of 29 <br />