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www.en?rgylab.com I Helena, W 877- 472 -0711 • Billings, W 800- 735 -4489 • Casper, WY 888- 235 -8515 <br />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 />05/29/13 <br />Project: Schwartz -SW 5/4/13 <br />S26868 S26869 <br />Work Order: <br />C13050235 <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- R173347 <br />Sample ID: MBLK <br />2 Method Blank <br />Run: MANTECH 130506A <br />05/08/13 15:25 <br />Alkalinity, Total as CaCO3 <br />ND <br />mg /L <br />2 <br />Bicarbonate as HCO3 <br />1 <br />mg /L <br />1 <br />Sample ID: LCS_130315 <br />Laboratory Control Sample <br />Run: MANTECH_130508A <br />05/08/13 15:41 <br />Alkalinity, Total as CaCO3 <br />258 <br />mg /L <br />5.0 <br />103 90 110 <br />Sample ID: C13050235 -001 BDUP <br />2 Sample Duplicate <br />Run: MANTECH_130508A <br />05/08/13 15:55 <br />Alkalinity, Total as CaCO3 <br />33.1 <br />mg /L <br />5.0 <br />2.2 <br />10 <br />Bicarbonate as HCO3 <br />40.4 <br />mg /L <br />5.0 <br />2.2 <br />10 <br />Sample ID: C13050235- 002BMS <br />Sample Matrix Spike <br />Run: MANTECH_130508A <br />05/08/13 16:11 <br />Alkalinity, Total as CaCC3 <br />291 <br />mg /L <br />5.0 <br />102 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 29 <br />