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- <br />• E www.ene dal.com Helena, MT 877- 472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 888- 235 -0515 <br />AU "E=0N# C.S+m Iz2 f Gillette, wY 866 -666 -7175 • Rapid City, So 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 />09/30/14 <br />Project: Schwartz -GW 09/04/14 S27679 Work Order: <br />C14090400 <br />Analyte <br />Count Result Units RL %REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2320 B <br />Batch: R190934 <br />Lab ID: MBLK <br />2 Method Blank Run: MANTECH 140910B <br />09/10/14 16:32 <br />Alkalinity, Total as CaCO3 <br />2 mg /L 0.6 <br />Bicarbonate as HCO3 <br />2 mg /L 1 <br />Lab ID: LCS_140522 <br />Laboratory Control Sample Run: MANTECH_140910B <br />09/10/14 16:46 <br />Alkalinity, Total as CaCO3 <br />261 mg /L 5.0 104 90 110 <br />Lab ID: C14090402- 001CDUP <br />2 Sample Duplicate Run: MANTECH_140910B <br />09/10/14 17:09 <br />Alkalinity, Total as CaCO3 <br />173 mg /L 5.0 0.3 <br />10 <br />Bicarbonate as HCO3 <br />210 mg /L 5.0 0.3 <br />10 <br />Lab ID: C14090350- 001BMS <br />Sample Matrix Spike Run: MANTECH_140910B <br />09/10/14 17:26 <br />Alkalinity, Total as CaCO3 <br />515 mg /L 5.0 104 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 />