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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: <br />Cotter Corporation <br />Report Date: <br />05/20/15 <br />Project: <br />Schwartz - GW 4/21/15 S27905, S27908 <br />Work Order: <br />C15040681 <br />Analyte <br />Count Result Units <br />RL %REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: <br />E200.8 <br />Method: E200.8 <br />Batch: R198633 <br />Lab ID: <br />LFB 7 Laboratory Fortified Blank <br />Run: ICPMS4-C 150424A <br />04/24/15 14:42 <br />Uranium <br />0.0451 <br />mg/L <br />0.00030 <br />90 <br />85 <br />115 <br />Zinc <br />0.0536 <br />mg/L <br />0.0010 <br />107 <br />85 <br />115 <br />Method: E200.8 <br />4E-05 <br />Silver <br />70 130 <br />ND mg/L <br />0.0002 <br />Analytical Run: ICPMS4-C_150427A <br />Lab ID: ICV <br />4 Initial Calibration Verification <br />Standard <br />Lab ID: <br />LCS3-44484 <br />04/27/15 14:17 <br />Antimony <br />0.0514 <br />mg/L <br />0.0010 <br />103 <br />90 <br />110 <br />Lead <br />0.0491 <br />mg/L <br />0.0010 <br />98 <br />90 <br />110 <br />Silver <br />0.0214 <br />mg/L <br />0.0010 <br />107 <br />90 <br />110 <br />Thallium <br />0.0508 <br />mg/L <br />0.0010 <br />102 <br />90 <br />110 <br />Method: <br />E200.8 <br />103 <br />85 115 <br />Lab ID: <br />MB -44484 <br />4 Method Blank <br />85 115 <br />Antimony <br />85 115 <br />0.0002 mg/L <br />0.0002 <br />Lead <br />70 130 <br />5E-05 mg/L <br />4E-05 <br />Silver <br />70 130 <br />ND mg/L <br />0.0002 <br />Thallium <br />Run: ICPMS4-C_150427A <br />8E-05 mg/L <br />6E-05 <br />Lab ID: <br />LCS3-44484 <br />4 Laboratory Control Sample <br />70 130 <br />Antimony <br />70 130 <br />0.515 mg/L <br />0.0010 <br />Lead <br />0.506 mg/L <br />0.0010 <br />Silver <br />0.0448 mg/L <br />0.0010 <br />Thallium <br />0.469 mg/L <br />0.00050 <br />Lab ID: <br />015040681-002BMS3 <br />4 Sample Matrix Spike <br />Antimony <br />1.01 mg/L <br />0.0012 <br />Lead <br />1.02 mg/L <br />0.0010 <br />Silver <br />0.0736 mg/L <br />0.0010 <br />Thallium <br />0.979 mg/L <br />0.00050 <br />Lab ID: <br />C15040681-002BMSD <br />4 Sample Matrix Spike Duplicate <br />Antimony <br />1.01 mg/L <br />0.0012 <br />Lead <br />1.00 mg/L <br />0.0010 <br />Silver <br />0.0767 mg/L <br />0.0010 <br />Thallium <br />0.923 mg/L <br />0.00050 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Run: ICPMS4-C 150427A <br />ND - Not detected at the reporting limit. <br />0.3 <br />1.7 <br />4.1 <br />5.9 <br />Batch: 44484 <br />04/27/15 15:53 <br />04/27/15 15:58 <br />04/27/15 16:43 <br />04/27/15 16:48 <br />20 <br />20 <br />20 <br />20 <br />Page 11 of 21 <br />Run: ICPMS4-C_150427A <br />103 <br />85 115 <br />101 <br />85 115 <br />90 <br />85 115 <br />94 <br />85 115 <br />Run: ICPMS4-C_150427A <br />101 <br />70 130 <br />102 <br />70 130 <br />74 <br />70 130 <br />98 <br />70 130 <br />Run: ICPMS4-C_150427A <br />101 <br />70 130 <br />100 <br />70 130 <br />77 <br />70 130 <br />92 <br />70 130 <br />ND - Not detected at the reporting limit. <br />0.3 <br />1.7 <br />4.1 <br />5.9 <br />Batch: 44484 <br />04/27/15 15:53 <br />04/27/15 15:58 <br />04/27/15 16:43 <br />04/27/15 16:48 <br />20 <br />20 <br />20 <br />20 <br />Page 11 of 21 <br />