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Trust our People. Trust our Data. Billings, MT 800.735.4489 • Casper. WY 888.235.0515 <br />College Station. TX 888.690.2218 • Gillette, WY 866.686.7175 • Helena. MT 877.472.0711 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: 05/07/15 <br />Project: Schwartz - GW 4/14/15 S27854, S27857 <br />Work Order: C15040486 <br />Analyte <br />Count Result <br />Units <br />RL %REC Low Limit <br />High Limit RPD RPDLimit Qual <br />Method: E200.7 <br />Run: ICP4-C 150416A <br />04/16/15 14:04 <br />Analytical Run: ICP4-C_150416A <br />Lab ID: ICSAB <br />8 Interference Check Sample AB <br />mg/L <br />04/16/15 22:19 <br />Molybdenum <br />0.000820 <br />mg/L <br />0.10 <br />Calcium <br />Potassium <br />-0.0369 <br />mg/L <br />1.0 <br />Sodium <br />-0.0668 <br />mg/L <br />1.0 <br />Method: E200.7 <br />Batch: R198320 <br />Lab ID: MB -150416A <br />8 <br />Method Blank <br />Run: ICP4-C 150416A <br />04/16/15 14:04 <br />Aluminum <br />ND <br />mg/L <br />0.01 <br />Calcium <br />ND <br />mg/L <br />0.01 <br />Iron <br />ND <br />mg/L <br />0.005 <br />Magnesium <br />ND <br />mg/L <br />0.01 <br />Manganese <br />ND <br />mg/L <br />0.002 <br />Molybdenum <br />ND <br />mg/L <br />0.007 <br />Potassium <br />ND <br />mg/L <br />0.06 <br />Sodium <br />ND <br />mg/L <br />0.2 <br />Lab ID: LFB-150416A <br />8 <br />Laboratory Fortified <br />Blank <br />Run: ICP4-C_150416A <br />04/16/15 14:08 <br />Aluminum <br />1.01 <br />mg/L <br />0.10 <br />101 <br />85 115 <br />Calcium <br />48.2 <br />mg/L <br />1.0 <br />96 <br />85 115 <br />Iron <br />0.977 <br />mg/L <br />0.030 <br />98 <br />85 115 <br />Magnesium <br />47.8 <br />mg/L <br />1.0 <br />96 <br />85 115 <br />Manganese <br />0.946 <br />mg/L <br />0.010 <br />95 <br />85 115 <br />Molybdenum <br />0.941 <br />mg/L <br />0.10 <br />94 <br />85 115 <br />Potassium <br />53.1 <br />mg/L <br />1.0 <br />106 <br />85 115 <br />Sodium <br />50.3 <br />mg/L <br />1.0 <br />101 <br />85 115 <br />Lab ID: C15040431-005BMS2 <br />8 <br />Sample Matrix Spike <br />Run: ICP4-C_150416A <br />04/16/15 18:55 <br />Aluminum <br />1.95 <br />mg/L <br />0.030 <br />94 <br />70 130 <br />Calcium <br />188 <br />mg/L <br />1.0 <br />92 <br />70 130 <br />Iron <br />1.99 <br />mg/L <br />0.030 <br />97 <br />70 130 <br />Magnesium <br />111 <br />mg/L <br />1.0 <br />94 <br />70 130 <br />Manganese <br />1.86 <br />mg/L <br />0.0031 <br />91 <br />70 130 <br />Molybdenum <br />1.87 <br />mg/L <br />0.015 <br />92 <br />70 130 <br />Potassium <br />99.8 <br />mg/L <br />1.0 <br />96 <br />70 130 <br />Sodium <br />130 <br />mg/L <br />1.0 <br />95 <br />70 130 <br />Lab ID: C15040431-005BMSD <br />8 <br />Sample Matrix Spike Duplicate <br />Run: ICP4-C_150416A <br />04/16/15 18:58 <br />Aluminum <br />1.92 <br />mg/L <br />0.030 <br />92 <br />70 130 <br />2.0 <br />20 <br />Calcium <br />186 <br />mg/L <br />1.0 <br />90 <br />70 130 <br />0.9 <br />20 <br />Iron <br />1.96 <br />mg/L <br />0.030 <br />95 <br />70 130 <br />1.4 <br />20 <br />Magnesium <br />109 <br />mg/L <br />1.0 <br />92 <br />70 130 <br />1.4 <br />20 <br />Manganese <br />1.84 <br />mg/L <br />0.0031 <br />90 <br />70 130 <br />1.2 <br />20 <br />Molybdenum <br />1.86 <br />mg/L <br />0.015 <br />91 <br />70 130 <br />0.4 <br />20 <br />Potassium <br />97.8 <br />mg/L <br />1.0 <br />94 <br />70 130 <br />2.0 <br />20 <br />Sodium <br />128 <br />mg/L <br />1.0 <br />93 <br />70 130 <br />1.7 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />ND - <br />Not detected <br />at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 8 of 30 <br />