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ENERGY <br />L ABORATORIE S <br />Client: Cotter Corporation <br />www.energylab.com <br />Analytical ErceIeece since 1952 <br />Helena, MT 877- 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 - 2219 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 10/18/12 <br />Project: Schwartz -GW 9/6/12 S26563 Work Order: C12090274 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: A2320 B <br />Sample ID: MBLK <br />Alkalinity, Total as CaCO3 <br />Bicarbonate as HCO3 <br />2 Method Blank <br />ND mg /L <br />ND mg /L <br />Sample ID: LCS_120818 Laboratory Control Sample <br />Alkalinity, Total as CaCO3 210 mg /L <br />Sample ID: C12090274- 001BDUP 2 Sample Duplicate <br />Alkalinity, Total as CaCO3 387 mg /L <br />Bicarbonate as HCO3 472 mg /L <br />Sample ID: C12090274- 001BMS Sample Matrix Spike <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />3 <br />1 <br />Run: MANTECH 120911B 09/11/12 15:44 <br />5.0 105 90 110 <br />5.0 <br />5.0 <br />Run: MANTECH 120911 B <br />Run: MANTECH 120911 B <br />Run: MANTECH 120911 B <br />Alkalinity, Total as CaCO3 518 mg /L 5.0 98 80 120 <br />ND - Not detected at the reporting limit. <br />Batch: R164425 <br />09/11/12 15:22 <br />09/11/12 22:21 <br />2.1 10 <br />2.1 10 <br />09/11/12 22:29 <br />Page 5 of 23 <br />