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www.vwoab.com j Helena, btf 877 -472 -0711 • Billings, W 800 -735 -4489 • Casper, WY 888 -235 -0515 <br />Swab 'Ska IM Gillette, WY 866 -086 -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 />06/06/13 <br />Project: Schwartz GW 5/15/13 S26918 & S26919 <br />Work Order: <br />C13050708 <br />Analyte <br />Count Result <br />Units <br />RL <br />%REC Low Limit High Limit RPD <br />RPDLimit Qual� <br />Method: A2320 B <br />Batch R173739 <br />Sample ID: MBLK <br />2 Method Blank <br />Run: MANTECH_130517C <br />05/17/13 14:54 <br />Alkalinity, Total as CaCO3 <br />ND <br />mg /L <br />2 <br />Bicarbonate as HCO3 <br />ND <br />mg /L <br />1 <br />Sample ID: LCS_130315 <br />Laboratory Control Sample <br />Run: MANTECH_130517C <br />05/17/13 15:08 <br />Alkalinity, Total as CaCO3 <br />257 <br />mg /L <br />5.0 <br />103 90 110 <br />Sample ID: C13050703- 002CDUP <br />2 Sample Duplicate <br />Run: MANTECH_130517C <br />05/18/13 02:50 <br />Alkalinity, Total as CaCO3 <br />163 <br />mg /L <br />50 <br />08 <br />10 <br />Bicarbonate as HCO3 <br />171 <br />mg /L <br />5.0 <br />0.4 <br />10 <br />Sample ID: C13050703- 003CMS <br />Sample Matrix Spike <br />Run: MANTECH_130517C <br />05/18/13 03.07 <br />Alkalinity, Total as CaCO3 <br />442 <br />mg /L <br />5.0 <br />104 80 120 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 7 of 25 <br />