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go' www.ene dab.com Helena, MT 677- 472 -0711 • Billings, Mr 600- 735-4489 • Casper, WY 888 - 235 -0513 <br />1i1C' 2- 102 Gillette, WY 866 -686 -7175 • Rapid City, SD 886 -672 -1225 • College Station, TX 688- 690 -2216 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz -GW 9/10/14 S27680,S27681 <br />Analyte <br />Count Result Units <br />Method: A2320 B <br />Lab ID: MBLK <br />2 Method Blank <br />Alkalinity, Total as CaCO3 <br />4 mg /L <br />Bicarbonate as HCO3 <br />4 mg /L <br />Lab ID: LCS_140522 <br />Laboratory Control Sample <br />Alkalinity, Total as CaCO3 <br />266 mg /L <br />Lab ID: C14090448- 002ADUP <br />2 Sample Duplicate <br />Alkalinity, Total as CaCO3 <br />542 mg /L <br />Bicarbonate as HCO3 <br />643 mg /L <br />Lab ID: 014090447- 002AMS <br />Sample Matrix Spike <br />Alkalinity, Total as CaCO3 <br />464 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 09/30/14 <br />Work Order: C14090456 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: R1909851 <br />Run: MANTECH 140911C 09/11/14 15:17 <br />0.6 <br />1 <br />Run: MANTECH_140911C 09/11/14 15:30 <br />5.0 105 90 110 <br />Run: MANTECH_140911C 09/11/14 19:14 <br />5.0 1.8 10 <br />5.0 1.8 10 <br />Run: MANTECH_140911C 09/11/14 19:38 <br />5.0 98 80 120 <br />ND - Not detected at the reporting limit. <br />Page 7 of 25 <br />