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www.&wgyiab.com Helena, MT 677- 472 -0711 • Billings, MT 600- 735 -4489 • Casper, WY 888- 235 -0515 <br />Au&*sIDxrh 10- tars f _ Gillette, WY 866 - 686 -7175 • Rapid City, SD 888 -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 />04/12/13 <br />Project: Schwartz GW 3/20/2013 S26877 <br />Work Order: <br />C13030792 <br />Analyte <br />Count Result Units <br />RL <br />%REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2320 B <br />Batch: R171649 <br />Sample ID: MBLK <br />2 Method Blank <br />Run: MANTECH_130322A <br />03/22/13 13:00 <br />Alkalinity, Total as CaCO3 <br />3 mg /L <br />1 <br />Bicarbonate as HCO3 <br />3 mg /L <br />1 <br />Sample ID: LCS_130315 <br />Laboratory Control Sample <br />Run: MANTECH_130322A <br />03/22/13 13:14 <br />Alkalinity, Total as CaCO3 <br />153 mg /L <br />5.0 <br />100 90 110 <br />Sample ID: C13030786- 001AMS <br />Sample Matrix Spike <br />Run: MANTECH_130322A <br />03/22/13 13:38 <br />Alkalinity, Total as CaCO3 <br />318 mg /L <br />5.0 <br />101 80 120 <br />Sample ID: C13030820- 002ADUP <br />2 Sample Duplicate <br />Run: MANTECH_130322A <br />03/22/13 15:11 <br />Alkalinity, Total as CaCO3 <br />126 mg /L <br />5.0 <br />0.3 <br />10 <br />Bicarbonate as HCO3 <br />153 mg /L <br />5.0 <br />0.3 <br />10 <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 />