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ENERGY <br />A9 ORATORI ES <br />no wvmenergylab.com <br />AublfattEntaanno Vacs 1852 <br />Client: Cotter Corporation <br />Project: Schwartz GW 6/23/11 S25850 <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 -872 -1225 • College Station, TX 888 -690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 07/22/11 <br />Work Order: C11061003 <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 />Sample ID: LCS <br />Alkalinity, Total as CaCO3 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />2 Method Blank <br />2 mg /L <br />2 mg /L <br />Laboratory Control Sample <br />209 mg /L <br />Sample ID: C11061008- 003BDUP Sample Duplicate <br />Sample ID: C11061008- 003BMS Sample Matrix Spike <br />Run: MANTECH_110624A <br />Batch: R147355 <br />06/24/11 09:06 <br />1 <br />1 <br />Run: MANTECH_110624A 06/24/11 09:22 <br />5.0 104 90 110 <br />Run: MANTECH_110624A 06/24/11 16:48 <br />Alkalinity, Total as CaCO3 539 mg /L 5.0 1.4 10 <br />Run: MANTECH_110624A 06/24/11 16:57 <br />Alkalinity, Total as CaCO3 677 mg /L 5.0 104 80 120 <br />ND - Not detected at the reporting limit. <br />Page 5 of 21 <br />