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ENERGY <br />co <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />www.energyiab.com Helena, AR 877- 472 -0711 • Billings, MT 800 -735 -4489 • Casper, WY 888 -235 -0515 <br />Ereekaw S 11152 Gillette, WY 858 -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 />Client: Cotter Corporation Report Date: 06/15/12 <br />Project: Schwartz GW 5/8/12 S26475 Work Order: C12050412 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E245.1 Analytical Run: CVAA_C203_120518A <br />Sample ID: ICV Initial Calibration Verification Standard 05/17/12 12:32 <br />Mercury 0.00487 mg /L 0.00010 97 90 110 <br />Sample ID: CCV1 Continuing Calibration Verification Standard 05/17/12 12:35 <br />Mercury 0.00519 mg /L 0.00010 104 90 110 <br />Method: E245.1 Batch: 33650 <br />Sample ID: MB -33650 Method Blank Run: CVAA_C203_120518A 05/17/12 12:37 <br />Mercury ND mg /L 3E -05 <br />Sample ID: LCS -33650 Laboratory Control Sample Run: CVAA_C203_120518A 05/17/12 12:39 <br />Mercury 0.00543 mg /L 0.00010 109 85 115 <br />Sample ID: C12050084 -001CMS Sample Matrix Spike Run: CVAA_C203_120518A 05/17/12 12:41 <br />Mercury 0.00499 mg /L 0.00010 100 70 130 <br />Sample ID: C12050084 -001CMSD Sample Matrix Spike Duplicate Run: CVAA_C203_120518A 05/17/12 12:43 <br />Mercury 0.00553 mg /L 0.00010 111 70 130 10 10 R <br />ND - Not detected at the reporting limit. <br />R - RPD exceeds advisory limit. <br />Page 11 of 20 <br />