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ENERGY <br />R <br />Client: Cotter Corporation <br />www.energylab.com Helena, MT 877 -472 -0711 • Billings, MT 800 - 735 -4489 • Casper, WY 888 - 235 - 0515 <br />AR$' *&Wea=Sarr' 1952 Gillette, WY 866 -686 -7175 • Rapid City, SD 888 -672 -1225 • College Station, TX 888- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 11/23/11 <br />Project: Schwartz GW 10/06/11 S26029 Work Order: C11100369 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E245.1 Analytical Run: CVAA_C203_111028A <br />Sample ID: CCV1 Continuing Calibration Verification Standard 10/28/11 11:51 <br />Mercury 0.00521 mg /L 0.0010 104 95 105 <br />Method: E245.1 Batch: 31748 <br />Sample ID: MB -31748 Method Blank Run: CVAA_C203_111028A 10/28/11 11:53 <br />Mercury ND mg /L 0.00010 <br />Sample ID: LCS -31748 Laboratory Control Sample Run. CVAA_C203_111028A 10/28/11 11:54 <br />Mercury 0.00512 mg /L 0.0010 102 85 115 <br />Sample ID: C11100784 -001 BMS Sample Matrix Spike Run: CVAA_C203_111028A 10/28/11 11:57 <br />Mercury 0.00519 mg /L 0.0010 104 70 130 <br />Sample ID: C11100784 -001 BMSD Sample Matrix Spike Duplicate Run: CVAA_C203_111028A 10/28/11 11:58 <br />Mercury 0.00520 mg /L 0.0010 104 70 130 0.2 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 11 of 20 <br />