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ENERGY <br />LAHO RATO RI ES <br />Method: A2320 B <br />Sample ID: MBLK <br />Alkalinity, Total as CaCO3 <br />Bicarbonate as HCO3 <br />Sample ID: LCS_120818 <br />Alkalinity, Total as CaCO3 <br />Sample ID: 012090742- 001ADUP <br />Alkalinity, Total as CaCO3 <br />Bicarbonate as HCO3 <br />Sample ID: C12090742- 002AMS <br />Alkalinity, Total as CaCO3 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />www.energylab.com <br />Analytical Excellence Since 1852 <br />Client: Cotter Corporation <br />Project: Schwartz GW 9/20/2012 S26607 & S26608 <br />Analyte Count Result Units <br />2 Method Blank <br />ND mg /L <br />1 mg /L <br />Laboratory Control Sample <br />208 mg /L <br />2 Sample Duplicate <br />262 mg /L <br />319 mg /L <br />Sample Matrix Spike <br />518 mg /L <br />Helena, MT 877 472 - 0711 • Billings, MT 800 - 735 - 4489 • Casper, WY 888 235 - 0515 <br />Gillette, WY 866 - 686 - 7175 • Rapid City, SD 888- 672 -1225 • College Station, TX 888 -690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />3 <br />1 <br />Run: MANTECH 120921 B <br />5.0 104 90 110 <br />5.0 <br />5.0 <br />Run: MANTECH 120921B <br />Run: MANTECH 120921 B <br />Run: MANTECH 120921 B <br />5.0 110 80 120 <br />ND - Not detected at the reporting limit. <br />Report Date: 10/18/12 <br />Work Order: 012090782 <br />Batch: R164878 <br />09/21/12 16:20 <br />09/21/12 16:33 <br />09/21/12 16:49 <br />0.3 10 <br />0.3 10 <br />09/21/12 17:06 <br />Page 6 of 21 <br />