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• www.ene dab.com <br />Helena, MT 877472 -0711 - Billings, MT 801- 735 -4489 • Casper, WY 888 -235 -0515 <br />�"h'Ifsealo«N»51 1931 <br />Gillette, <br />WY 866 -686 <br />-7175 • <br />Rapid City, SD <br />888- 672 -1225 • College Station, <br />TX 888 -690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY <br />Branch <br />Client: <br />Cotter Corporation <br />Report Date: <br />03/10/15 <br />Project: <br />Schwartz -GW 01 -30 -15 S28127, S28129 <br />Work Order: <br />C15020026 <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: <br />ICPMS2- C_150210A <br />Lab ID: <br />lCV 4 Initial Calibration <br />Verification Standard <br />02/10/15 17:48 <br />Antimony <br />0.0489 <br />mg /L <br />0.0010 <br />98 <br />90 <br />110 <br />Copper <br />0.0489 <br />mg /L <br />0.0010 <br />98 <br />90 <br />110 <br />Silver <br />0.0219 <br />mg /L <br />0.0010 <br />109 <br />90 <br />110 <br />Thallium <br />0.0514 <br />mg /L <br />0.0010 <br />103 <br />90 <br />110 <br />Method: <br />E200.8 <br />Batch: 43873 <br />Lab ID: <br />MB -43873 4 Method Blank <br />Run: ICPMS2 -C 150210A <br />02/10/15 18:33 <br />Antimony <br />ND <br />mg /L <br />0.0002 <br />Copper <br />ND <br />mg /L <br />0.0004 <br />Silver <br />0.0001 <br />mg /L <br />2E -05 <br />Thallium <br />ND <br />mg /L <br />0.0001 <br />Lab ID: <br />LCS3 -43873 4 Laboratory Control Sample <br />Run: ICPMS2- C_150210A <br />02/10/15 18:36 <br />Antimony <br />0.524 <br />mg /L <br />0.0010 <br />105 <br />85 <br />115 <br />Copper <br />0.474 <br />mg /L <br />0.0050 <br />95 <br />85 <br />115 <br />Silver <br />0.0539 <br />mg /L <br />0.0010 <br />108 <br />85 <br />115 <br />Thallium <br />0.519 <br />mg /L <br />0.00050 <br />104 <br />85 <br />115 <br />Lab ID: <br />C15020146- 001BMS3 4 Sample Matrix Spike <br />Run: ICPMS2- C_150210A <br />02/10/15 19:14 <br />Antimony <br />0.516 <br />mg /L <br />0.0010 <br />103 <br />70 <br />130 <br />Copper <br />0.479 <br />mg /L <br />0.0050 <br />93 <br />70 <br />130 <br />Silver <br />0.0531 <br />mg /L <br />0.0010 <br />106 <br />70 <br />130 <br />Thallium <br />0.497 <br />mg /L <br />0.00050 <br />99 <br />70 <br />130 <br />Lab ID: <br />C15020146- 001BMSD 4 Sample Matrix Spike Duplicate <br />Run: ICPMS2- C_150210A <br />02/10/15 19:17 <br />Antimony <br />0.510 <br />mg /L <br />0.0010 <br />102 <br />70 <br />130 1.1 <br />20 <br />Copper <br />0.466 <br />mg /L <br />0.0050 <br />91 <br />70 <br />130 2.8 <br />20 <br />Silver <br />0.0537 <br />mg /L <br />0.0010 <br />107 <br />70 <br />130 1.1 <br />20 <br />Thallium <br />0.487 <br />mg /L <br />0.00050 <br />97 <br />70 <br />130 2.1 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 8 of 18 <br />