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www.mwm4ab.com ( Helena, MT 077 - 472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 888- 235 -0515 <br />Ae**WE=0ft eam 1lai Gillette, WY 866 -686 -7175 • Rapid City, SO 888- 672 -1225 • College Station, TX 088 - 690 -2218 <br />1 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz GW 11/12/13 S27218 <br />Analyte <br />Count Result <br />Units <br />Method: A2320 B <br />Sample ID: MBLK <br />2 Method Blank <br />Alkalinity, Total as CaCO3 <br />ND <br />mg /L <br />Bicarbonate as HCO3 <br />ND <br />mg /L <br />Sample ID: LCS_130917 <br />Laboratory Control Sample <br />Alkalinity, Total as CaCO3 <br />261 <br />mg /L <br />Sample ID: C13110612 -001 BDUP <br />2 Sample Duplicate <br />Alkalinity, Total as CaCO3 <br />224 <br />mg /L <br />Bicarbonate as HCO3 <br />273 <br />mg /L <br />Sample ID: C13110616- 002BMS <br />Sample Matrix Spike <br />Alkalinity, Total as CaCO3 <br />344 <br />mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 12/05/13 <br />Work Order: 01 31 1 061 2 <br />RL ° /.9EC Low Limit High Limit RPD RPDLimit Qual <br />Batch: R180839 <br />Run: MANTECH_131115A 11/15/13 14:11 <br />Run: MANTECH_131115A 11/15/13 14:25 <br />5.0 104 90 110 <br />Run: MANTECH_131115A 11/15/13 14:40 <br />5.0 1.1 10 <br />5.0 1.1 10 <br />Run: MANTECH_131115A 11/15/13 14:56 <br />5.0 102 80 120 <br />ND - Not detected at the reporting limit. <br />Page 5 of 21 <br />