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ENERGY <br />AHOPAT ORIL_S <br />www.energydab.com ( Helena, MT 877 472 - 0711 • Billings, MT 800 - 735 - 4489 • Casper, WY 888 - 235 - 0515 <br />Aothticilfivionco 51PCI 1952 Gillette, WY 866 - 686 -7175 • Rapid City, SD 888- 672 -1225 • College Station, TX 888 -680 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz GW 4/15/11 S25714 Work Order: C11040550 <br />Report Date: 05/17/11 <br />Analyte <br />Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: A2320 B <br />Sample ID: MBLK <br />Alkalinity, Total as CaCO3 <br />Bicarbonate as HCO3 <br />Sample ID: LCS <br />2 Method Blank <br />2.41 mg /L <br />2.94 mg /L <br />Laboratory Control Sample <br />Alkalinity, Total as CaCO3 214 mg /L <br />Sample ID: C11040528- 010ADUP Sample Duplicate <br />04/18/11 19:36 <br />Alkalinity, Total as CaCO3 190 mg /L 5.0 1.8 10 <br />Sample ID: 011040528- 01OAMS Sample Matrix Spike <br />Alkalinity, Total as CaCO3 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />323 mg /L <br />1.0 <br />1.0 <br />Run: MANTECH_110418B <br />Run: MANTECH_110418B <br />5.0 106 90 110 <br />Run: MANTECH_110418B <br />Batch: R144910 <br />04/18/11 15:42 <br />04/18/11 15:57 <br />Run: MANTECH_110418B 04/18/11 19:45 <br />5.0 104 80 120 <br />ND - Not detected at the reporting limit. <br />Page 5 of 19 <br />