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• www.erweeb.com <br />} <br />I <br />Helena, MT 877- 472 -0711 a Billings, MT 800 - 735 -4469 a Casper, WY 888- 235 -0515 <br />.Mew yes <br />J <br />Gillette, WY 866 -686 -7175 a <br />Rapid City, SO 886 -672 -1225 a College Station, TX 888 -690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY <br />Branch <br />Client: Cotter Corporation <br />Report Date: <br />08/20/13 <br />Project: Schwartz GW 07/17/13 <br />S27046 - S27047 <br />Work Order: <br />C13070682 <br />[ Analyte Count Result <br />Units <br />RL <br />01AEC <br />Low Limit <br />High Limit RPD <br />RPDLimit Oual <br />Method: E200.7 <br />Batch: R176606 <br />Sample ID: LFB- 130731A <br />9 Laboratory Fortified Blank <br />Run- ICP4- C_130731A <br />07/31/13 12:50 <br />Aluminum <br />0.963 <br />mg /L <br />0.10 <br />96 <br />85 <br />115 <br />Calcium <br />48.0 <br />mg /L <br />0.50 <br />96 <br />85 <br />115 <br />Iron <br />0.972 <br />mg /L <br />0.030 <br />97 <br />85 <br />115 <br />Magnesium <br />47.6 <br />mg /L <br />0.50 <br />95 <br />85 <br />115 <br />Manganese <br />0.944 <br />mg /L <br />0.010 <br />94 <br />85 <br />115 <br />Molybdenum <br />0.980 <br />mg /L <br />0.10 <br />98 <br />85 <br />115 <br />Potassium <br />48.1 <br />mg /L <br />0.50 <br />96 <br />85 <br />115 <br />Sodium <br />48.2 <br />mg /L <br />0.50 <br />96 <br />85 <br />115 <br />Zinc <br />0.929 <br />mg /L <br />0.010 <br />93 <br />85 <br />115 <br />Sample ID: C13070682- 001CMS2 <br />9 Sample Matrix <br />Spike <br />Run: ICP4- C130731 A <br />07/31/13 13:04 <br />Aluminum <br />2.05 <br />mg /L <br />0.030 <br />100 <br />70 <br />130 <br />Calcium <br />147 <br />mg /L <br />1.0 <br />97 <br />70 <br />130 <br />Iron <br />2.53 <br />mg /L <br />0.030 <br />97 <br />70 <br />130 <br />Magnesium <br />114 <br />mg /L <br />1.0 <br />98 <br />70 <br />130 <br />Manganese <br />2.76 <br />mg /L <br />0.0020 <br />94 <br />70 <br />130 <br />Molybdenum <br />2.17 <br />mg /L <br />0.0059 <br />99 <br />70 <br />130 <br />Potassium <br />110 <br />mg /L <br />1.0 <br />102 <br />70 <br />130 <br />Sodium <br />133 <br />mg /L <br />1.0 <br />99 <br />70 <br />130 <br />Zinc <br />1.91 <br />mg /L <br />0.010 <br />93 <br />70 <br />130 <br />Sample ID: C13070682- 001CMSD2 <br />9 Sample Matrix <br />Spike Duplicate <br />Run: ICP4- C_130731A <br />07/31/13 13:08 <br />Aluminum <br />2.02 <br />mg /L <br />0.030 <br />99 <br />70 <br />130 1.4 <br />20 <br />Calcium <br />146 <br />mg /L <br />1.0 <br />96 <br />70 <br />130 0.6 <br />20 <br />Iron <br />2.51 <br />mg /L <br />0.030 <br />96 <br />70 <br />130 0.8 <br />20 <br />Magnesium <br />114 <br />mg /L <br />1.0 <br />97 <br />70 <br />130 0.3 <br />20 <br />Manganese <br />2.75 <br />mg /L <br />0.0020 <br />93 <br />70 <br />130 0.3 <br />20 <br />Molybdenum <br />2.18 <br />mg /L <br />0.0059 <br />99 <br />70 <br />130 0.3 <br />20 <br />Potassium <br />109 <br />mg /L <br />1.0 <br />100 <br />70 <br />130 1.1 <br />20 <br />Sodium <br />132 <br />mg /L <br />1.0 <br />98 <br />70 <br />130 0.6 <br />20 <br />Zinc <br />1.90 <br />mg /L <br />0.010 <br />93 <br />70 <br />130 0.4 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 10 of 24 <br />