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wwmenergylab.com i Helena, MT 871472 -0711 • Billings, MT 600 - 735 -4489 • Casper, WY 888- 235 -0515 <br />Gillette, WY 866 -606 -1175 • 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 />Project: Schwartz -SW 5/4/13 S26868 S26869 <br />Analyte <br />Count Result Units <br />Method: <br />E200.7 <br />Sample ID: <br />C13050315- 004BMS2 7 Sample Matrix Spike <br />Aluminum <br />5.03 mg /L <br />Calcium <br />648 mg /L <br />Iron <br />4.84 mg /L <br />Magnesium <br />345 mg /L <br />Manganese <br />536 mg /L <br />Potassium <br />248 mg /L <br />Sodium <br />579 mg /L <br />Sample ID: <br />013050315- 004BMSD2 7 Sample Matrix Spike Duplicate <br />Aluminum <br />5.00 mg /L <br />Calcium <br />650 mg /L <br />Iron <br />4.86 mg /L <br />Magnesium <br />347 mg /L <br />Manganese <br />5.34 mg /L <br />Potassium <br />246 mg /L <br />Sodium <br />579 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 05/29/13 <br />Work Order: C13050235 <br />RL ° /cREC Low Limit High Limit RPD RPDLimit Qual <br />Batch: R174106 <br />Run: ICP4 -C 130528A 05/28/13 20:27 <br />0.047 <br />96 <br />70 130 <br />1.0 <br />87 <br />70 130 <br />0.030 <br />95 <br />70 130 <br />1.0 <br />94 <br />70 130 <br />0.0050 <br />92 <br />70 130 <br />1.0 <br />94 <br />70 130 <br />1.0 <br />89 <br />70 130 <br />Run: ICP4- C_130528A <br />05/28/13 20:31 <br />0.047 <br />96 <br />70 130 <br />0.5 <br />20 <br />1.0 <br />88 <br />70 130 <br />0.3 <br />20 <br />0.030 <br />95 <br />70 130 <br />0.3 <br />20 <br />1.0 <br />95 <br />70 130 <br />0.5 <br />20 <br />0.0050 <br />92 <br />70 130 <br />0.3 <br />20 <br />1.0 <br />94 <br />70 130 <br />0.7 <br />20 <br />1.0 <br />88 <br />70 130 <br />0.1 <br />20 <br />ND - Not detected at the reporting limit. <br />Page 13 of 29 <br />