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n <br />• Ewww.enerdab.com <br />Helena, W 877- 472 -0711 • Billings, W 800 -735 -4489 • Casper, WY 888- 235 -0515 <br />Aesl�fnJEre�lrnr•SrbeeJ832 <br />LRB <br />Gillette, <br />WY 686 -886 <br />-1175 •Rapid <br />City, SD <br />888 -672 -1225 • College Station, <br />TX 888 - 690 -2218 <br />Lab ID: <br />QA /QC Summary Report <br />Arsenic <br />Lab ID: <br />014120058- 001BMSD <br />Prepared by Casper, <br />WY <br />Branch <br />Client: Cotter Corporation <br />Report Date: <br />12/18/14 <br />Project: Schwartz -GW 12/1/14 S27819 <br />Work Order: <br />C14120084 <br />Analyte <br />Count Result <br />Units <br />RL <br />%REC <br />Low Limit <br />High Limit RPD <br />RPDLimit Oual <br />Method: E200.8 <br />Analytical Run: ICPMS2- C_141205A <br />Lab ID: ICV <br />4 Initial Calibration <br />Verification Standard <br />12/05/14 12:37 <br />Arsenic <br />0.0478 <br />mg /L <br />0.0010 <br />96 <br />90 <br />110 <br />Barium <br />0.0489 <br />mg /L <br />0.0010 <br />98 <br />90 <br />110 <br />Manganese <br />0.0486 <br />mg /L <br />0.0010 <br />97 <br />90 <br />110 <br />Molybdenum <br />0.0486 <br />mg /L <br />0.0010 <br />97 <br />90 <br />110 <br />Method: E200.8 <br />Analytical Run: ICPMS2- C_141209A <br />Lab ID: ICV <br />Initial Calibration <br />Verification Standard <br />12/09/14 12:13 <br />Arsenic <br />0.0470 <br />mg /L <br />0.0010 <br />94 <br />90 <br />110 <br />Method: E200.8 <br />Batch: 43371 <br />Lab ID: MB -43371 <br />4 Method Blank <br />Run: ICPMS2- C_141209A <br />12/09/14 13:11 <br />Arsenic <br />ND <br />mg /L <br />0.0003 <br />Barium <br />ND <br />mg /L <br />2E -05 <br />Manganese <br />0.0001 <br />mg /L <br />7E -05 <br />Molybdenum <br />ND <br />mg /L <br />8E -05 <br />Lab ID: LCS3 -43371 <br />4 Laboratory Control <br />Sample <br />Run: ICPMS2- C_141209A <br />12/09/14 13:14 <br />Arsenic <br />0.493 <br />mg /L <br />0.0010 <br />99 <br />85 <br />115 <br />Barium <br />0.519 <br />mg /L <br />0.050 <br />104 <br />85 <br />115 <br />Manganese <br />2.58 <br />mg /L <br />0.0010 <br />103 <br />85 <br />115 <br />Molybdenum <br />0.553 <br />mg /L <br />0.0010 <br />111 <br />85 <br />115 <br />Lab ID: C14120088- 002CMS3 <br />4 Sample Matrix Spike <br />Run: ICPMS2- C_141209A <br />12/09/14 13:44 <br />Arsenic <br />0.484 <br />mg /L <br />0.0010 <br />97 <br />70 <br />130 <br />Barium <br />0.558 <br />mg /L <br />0.050 <br />102 <br />70 <br />130 <br />Manganese <br />2.52 <br />mg /L <br />0.0010 <br />98 <br />70 <br />130 <br />Molybdenum <br />0.534 <br />mg /L <br />0.0010 <br />105 <br />70 <br />130 <br />Lab ID: C14120088- 002CMSD <br />4 Sample Matrix Spike Duplicate <br />Run: ICPMS2- C_141209A <br />12/09/14 13:47 <br />Arsenic <br />0.481 <br />mg /L <br />0.0010 <br />96 <br />70 <br />130 0.7 <br />20 <br />Barium <br />0.560 <br />mg /L <br />0.050 <br />102 <br />70 <br />130 0.5 <br />20 <br />Manganese <br />2.54 <br />mg /L <br />0.0010 <br />99 <br />70 <br />130 0.6 <br />20 <br />Molybdenum <br />0.558 <br />mg /L <br />0.0010 <br />110 <br />70 <br />130 4.4 <br />20 <br />Method: <br />E200.8 <br />Lab ID: <br />LRB <br />Arsenic <br />Lab ID: <br />LFB - filtered <br />Arsenic <br />Lab ID: <br />C14120058- 001BMS4 <br />Arsenic <br />Lab ID: <br />014120058- 001BMSD <br />Arsenic <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Method Blank <br />ND mg /L <br />0.00010 <br />Laboratory Fortified Blank <br />0.0526 mg /L <br />0.0010 <br />Sample Matrix Spike <br />0.0525 mg /L <br />0.0010 <br />Sample Matrix Spike Duplicate <br />0.0532 mg /L <br />0.0010 <br />Run: ICPMS2- C_141209A <br />Run: ICPMS2- C_141209A <br />105 85 115 <br />Run: ICPMS2- C_141209A <br />105 70 130 <br />Run: ICPMS2- C_141209A <br />106 70 130 1.3 <br />ND - Not detected at the reporting limit. <br />Batch: R194167 <br />12/09/14 12:54 <br />12/09/14 12:57 <br />12/09/14 22:07 <br />12/09/14 22:24 <br />20 <br />Page 6 of 12 <br />