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wwwmwiB4ab.com I Helena, MT 977472 -0711 - Billings, MT 860- 7354489 - Casper, WY 888- 235 -8515 <br />Awly"UnIlleawSmIM J Gillette, WY 866 -686 -7175 - Rapid City, SO 886- 672 -1225 - College Station, TX 988 -608 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />10/14/13 <br />Project: Schwartz GW 9/19/13 S27162 <br />Work Order: <br />C13090821 <br />Analyte <br />Count Result Units <br />RL <br />° /6REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2320 B <br />Batch: R178722 <br />Sample ID: MBLK <br />2 Method Blank <br />Run: MANTECH 130924A <br />09/24/13 13:47 <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_130917 <br />Laboratory Control Sample <br />Run: MANTECH_130924A <br />09/24/13 14:02 <br />Alkalinity, Total as CaCO3 <br />255 mg /L <br />5.0 <br />102 90 110 <br />Sample ID: 013090771- 001ADUP <br />2 Sample Duplicate <br />Run: MANTECH_130924A <br />09/24/13 14:17 <br />Alkalinity, Total as CaCO3 <br />44.2 mg /L <br />5.0 <br />1.2 <br />10 <br />Bicarbonate as HCO3 <br />54.0 mg /L <br />5.0 <br />1.2 <br />10 <br />Sample ID: 013090821- 001BMS <br />Sample Matrix Spike <br />Run: MANTECH_130924A <br />09/24/13 14:32 <br />Alkalinity, Total as CaCO3 <br />451 mg /L <br />5.0 <br />100 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 />