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www.energyla6.com Helena, MT 877- 472 -0711 • Billings, MT 608 -735 -4489 • Casper, WY 888 - 235 -8515 <br />} 'Sa' IM Gillette, WY 866 -686 -7175 • Rapid City, SO 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 />06/21/13 <br />Project: Schwartz SW 5/22/13 S26996 <br />Work Order: <br />C13050909 <br />Analyte <br />Count Result Units <br />RL <br />° /.REC Low Limit High Limit RPD <br />1 <br />RPDLimit Qual <br />Method: A2320 B <br />Batch: R174031 <br />Sample ID: MBLK <br />2 Method Blank <br />Run: MANTECH_130524A <br />05/24/13 16:56 <br />Alkalinity, Total as CaCO3 <br />ND mg /L <br />2 <br />Bicarbonate as HCO3 <br />1 mg /L <br />1 <br />Sample ID: LCS_130315 <br />Laboratory Control Sample <br />Run: MANTECH_130524A <br />05/24/13 17:11 <br />Alkalinity, Total as CaCO3 <br />253 mg /L <br />5.0 <br />101 90 110 <br />Sample ID: 013050902- 002AMS <br />Sample Matrix Spike <br />Run: MANTECH_130524A <br />05/24/13 18:16 <br />Alkalinity, Total as CaCO3 <br />364 mg /L <br />5.0 <br />102 80 120 <br />Sample ID: C13050909- 001BDUP <br />2 Sample Duplicate <br />Run: MANTECH_130524A <br />05/24/13 19:16 <br />Alkalinity, Total as CaCO3 <br />36.7 mg /L <br />5.0 <br />0.4 <br />10 <br />Bicarbonate as HCO3 <br />44.7 mg /L <br />5.0 <br />0.4 <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 26 <br />