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www.energ0ob.com J Helena, MT 877 -472 -0711 a Billings, MT 800 - 735 -4489 • Casper, WY 888 -235 -1515 <br />A'a�E aftwAM IJT Gillette, WY 806 -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 />Client: Cotter Corporation <br />Report Date: <br />10/24/13 <br />Project: Schwartz GW 9/25/13 S27178 & S27179 <br />Work Order: <br />C13091022 <br />Analyte <br />Count Result Units <br />RL <br />° /oREC <br />Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: <br />E200.7 <br />Batch: R179083 <br />Sample ID: <br />MB- 131002A <br />Method Blank <br />Run: ICP4 -C 131002A <br />10/02/13 14:40 <br />Potassium <br />ND mg /L <br />004 <br />Sample ID: <br />LFB- 131002A <br />Laboratory Fortified Blank <br />Run: ICP4- C_131002A <br />10/02/13 14:44 <br />Potassium <br />48.3 mg /L <br />0.50 <br />97 <br />85 115 <br />Sample ID: <br />C13090346- 001BMS2 <br />Sample Matrix Spike <br />Run: ICP4- C_131002A <br />10/02/13 14:58 <br />Potassium <br />103 mg /L <br />1.0 <br />99 <br />70 130 <br />Sample ID: <br />C13090346 -001 BMSD2 <br />Sample Matrix Spike Duplicate <br />Run: ICP4- C_131002A <br />10/02/13 15:02 <br />Potassium <br />101 mg /L <br />1.0 <br />97 <br />70 130 2.1 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 12 of 26 <br />