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• www.ener6ab.com Helena, MT 677- 472 -0711 • Billings, MT 800- 735 -4409 • Casper, WY 888- 235 -0515 <br />m" ,E—k -m 't Gillette, WY 866 -666 -7175 • Rapid City, SD 886 -672 -1225 • College Station, TX 888- 690 -2218 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 7 of 25 <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 9/11/14 S27683 and S27684 Work Order: <br />C14090497 <br />Analyte <br />Count Result Units RL %REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2320 B <br />Batch: R191038 <br />Lab ID: MBLK <br />2 Method Blank Run: MANTECH 140912A <br />09/12/14 16:23 <br />Alkalinity, Total as CaCO3 <br />0.6 mg /L 0.6 <br />Bicarbonate as HCO3 <br />ND mg /L 1 <br />Lab ID: LCS_140522 <br />Laboratory Control Sample Run: MANTECH_140912A <br />09/12/14 16:36 <br />Alkalinity, Total as CaCO3 <br />254 mg /L 5.0 101 90 110 <br />Lab ID: C14090497- 001BDUP <br />2 Sample Duplicate Run: MANTECH_140912A <br />09/12/14 16:51 <br />Alkalinity, Total as CaCO3 <br />201 mg /L 5.0 0.3 <br />10 <br />Bicarbonate as HCO3 <br />246 mg /L 5.0 0.3 <br />10 <br />Lab ID: 014090497- 002BMS <br />Sample Matrix Spike Run: MANTECH_140912A <br />09/12/14 17:08 <br />Alkalinity, Total as CaCO3 <br />550 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 7 of 25 <br />