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Trust our People. Trust our Data. Billings, MT 800.735.4489 • Casper, WY 888.235.0515 <br />o 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: <br />06/02/15 <br />Project: Schwartz - SW 5/1/15 S27880, S27882 <br />Work Order: <br />C15050078 <br />Analyte <br />Count Result <br />Units <br />RL <br />%REC <br />Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: <br />E200.8 <br />Analytical Run: ICPMS4-C_150508A <br />Lab ID: <br />ICV <br />5 <br />Initial Calibration <br />Verification Standard <br />05/08/15 10:02 <br />Arsenic <br />0.0497 <br />mg/L <br />0.0010 <br />99 <br />90 <br />110 <br />Chromium <br />0.0501 <br />mg/L <br />0.0010 <br />100 <br />90 <br />110 <br />Copper <br />0.0506 <br />mg/L <br />0.0010 <br />101 <br />90 <br />110 <br />Lead <br />0.0488 <br />mg/L <br />0.0010 <br />98 <br />90 <br />110 <br />Thallium <br />0.0505 <br />mg/L <br />0.0010 <br />101 <br />90 <br />110 <br />Method: <br />E200.8 <br />Batch: 44586 <br />Lab ID: <br />MB -44586 <br />5 <br />Method Blank <br />Run: ICPMS4-C 150508A <br />05/08/15 21:37 <br />Arsenic <br />ND <br />mg/L <br />0.0004 <br />Chromium <br />ND <br />mg/L <br />0.0003 <br />Copper <br />0.0003 <br />mg/L <br />0.0002 <br />Lead <br />ND <br />mg/L <br />4E-05 <br />Thallium <br />0.0004 <br />mg/L <br />6E-05 <br />Lab ID: <br />LCS3-44586 <br />5 <br />Laboratory Control <br />Sample <br />Run: ICPMS4-C_150508A <br />05/08/15 21:43 <br />Arsenic <br />1.05 <br />mg/L <br />0.0010 <br />105 <br />85 <br />115 <br />Chromium <br />1.05 <br />mg/L <br />0.0050 <br />105 <br />85 <br />115 <br />Copper <br />1.02 <br />mg/L <br />0.0050 <br />102 <br />85 <br />115 <br />Lead <br />1.06 <br />mg/L <br />0.0010 <br />106 <br />85 <br />115 <br />Thallium <br />0.919 <br />mg/L <br />0.00050 <br />92 <br />85 <br />115 <br />Lab ID: <br />015050100-005BMS3 <br />5 <br />Sample Matrix Spike <br />Run: ICPMS4-C_150508A <br />05/08/15 22:36 <br />Arsenic <br />1.02 <br />mg/L <br />0.0010 <br />102 <br />70 <br />130 <br />Chromium <br />1.06 <br />mg/L <br />0.0050 <br />106 <br />70 <br />130 <br />Copper <br />1.01 <br />mg/L <br />0.0050 <br />100 <br />70 <br />130 <br />Lead <br />1.07 <br />mg/L <br />0.0010 <br />107 <br />70 <br />130 <br />Thallium <br />0.983 <br />mg/L <br />0.00050 <br />98 <br />70 <br />130 <br />Lab ID: <br />015050100-005BMSD <br />5 <br />Sample Matrix Spike Duplicate <br />Run: ICPMS4-C_150508A <br />05/08/15 22:40 <br />Arsenic <br />1.02 <br />mg/L <br />0.0010 <br />102 <br />70 <br />130 0.0 <br />20 <br />Chromium <br />1.08 <br />mg/L <br />0.0050 <br />108 <br />70 <br />130 1.2 <br />20 <br />Copper <br />1.02 <br />mg/L <br />0.0050 <br />102 <br />70 <br />130 1.3 <br />20 <br />Lead <br />1.07 <br />mg/L <br />0.0010 <br />107 <br />70 <br />130 0.1 <br />20 <br />Thallium <br />0.945 <br />mg/L <br />0.00050 <br />94 <br />70 <br />130 3.9 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 15 of 31 <br />