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ENERGY <br />L AIC)RATOR I ES <br />Client: Cotter Corporation <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />www.energylab.com <br />Aeetytlal £xcalence Slnca 1852 <br />Helena, MT 817- 472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 888- 235 -0515 <br />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 />Project: Schwartz GW 7/26/2012 S26523 Work Order: C12071072 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E245.1 Analytical Run: CVAA_C203_120803A <br />Sample ID: ICV Initial Calibration Verification Standard 08/03/12 07:33 <br />Mercury 0.00481 mg /L 0.00010 96 90 110 <br />Sample ID: CCV1 Continuing Calibration Verification Standard 08/03/12 07:36 <br />Mercury 0.00507 mg /L 0.00010 101 95 105 <br />Method: E245.1 Batch: 34553 <br />Sample ID: MB -34553 Method Blank Run: CVAA_C203_120803A 08/03/12 07:39 <br />Mercury ND mg /L 3E -05 <br />Sample ID: LCS -34553 Laboratory Control Sample Run: CVAA_C203_120803A 08/03/12 07:40 <br />Mercury 0.00462 mg /L 0.00010 92 85 115 <br />Sample ID: 012080013- 001CMS Sample Matrix Spike Run: CVAA_C203_120803A 08/03/12 07:46 <br />Mercury 0.00416 mg /L 0.00010 83 70 130 <br />Sample ID: C12080013 -001 CMSD Sample Matrix Spike Duplicate Run: CVAA_C203_120803A 08/03/12 07:47 <br />Mercury 0 00464 mg /L 0 00010 93 70 130 11 10 R <br />ND - Not detected at the reporting limit. <br />R - RPD exceeds advisory limit. <br />Report Date: 08/31/12 <br />Page 12 of 20 <br />