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www.mw#ab.com ; Helena, MT 871 472 -0711 • Billings, MT 800 -735 -4489 • Casper, WY 888- 235 -0515 <br />Slow IM ) Gillette, WY 866 -686 -7175 • Rapid City, SD 886 -672 -1225 • College Station, TX 888 - 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />08/05/13 <br />Project: Schwartz GW 6/28/13 S27040 <br />Work Order: <br />013070012 <br />Analyte <br />Count Result Units <br />RL <br />%REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2320 B <br />Batch: R175401 <br />Sample ID: MBLK <br />2 Method Blank <br />Run: MANTECH 130701B <br />07/01/13 14:42 <br />Alkalinity, Total as CaCO3 <br />ND mg /L <br />2 <br />Bicarbonate as HCO3 <br />ND mg /L <br />1 <br />Sample ID: LCS_130618 <br />Laboratory Control Sample <br />Run: MANTECH_130701 B <br />07/01/13 14:56 <br />Alkalinity, Total as CaCO3 <br />255 mg /L <br />5.0 <br />102 90 110 <br />Sample ID: C13061078- 001ADUP <br />2 Sample Duplicate <br />Run: MANTECH_130701B <br />07/01/13 15:19 <br />Alkalinity, Total as CaCO3 <br />1380 mg /L <br />5.0 <br />02 <br />10 <br />Bicarbonate as HCO3 <br />1680 mg /L <br />5.0 <br />02 <br />10 <br />Sample ID: C13061080- 001AMS <br />Sample Matrix Spike <br />Run: MANTECH_130701B <br />07/01/13 15:35 <br />Alkalinity, Total as CaCO3 <br />509 mg /L <br />5.0 <br />107 80 120 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 5 of 21 <br />