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ENERGY 0 Trust our People.Trust our Data. `-- Billings.Ml 800.135.4489•Casper,WY 888.235.0515 <br /> www energyiab.com Gillette,WY 866.686.7175•Helena.MT 877.472.0711 <br /> QA/QC Summary Report <br /> Prepared by Billings, MT Branch <br /> Client: Nederland Mining Consultants Work Order: B20021855 Report Date: 03/11/20 <br /> Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br /> Method: E200.8 Analytical Run:ICPMS208-B_200302A <br /> Lab ID: QCS 11 Initial Calibration Verification Standard 03/02/20 21:25 <br /> Arsenic 0.0468 mg/L 0.0050 94 90 110 <br /> Cadmium 0.0233 mg/L 0.0010 93 90 110 <br /> Chromium 0.0479 mg/L 0.010 96 90 110 <br /> Copper 0.0478 mg/L 0.010 96 90 110 <br /> Iron 0.243 mg/L 0.020 97 90 110 <br /> Lead 0.0458 mg/L 0.010 92 90 110 <br /> Manganese 0.241 mg/L 0.010 97 90 110 <br /> Nickel 0.0489 mg/L 0.010 98 90 110 <br /> Selenium 0.0480 mg/L 0.0050 96 90 110 <br /> Silver 0.0228 mg/L 0.0050 91 90 110 <br /> Zinc 0.0493 mg/L 0.010 99 90 110 <br /> Method: E200.8 Batch: 142275 <br /> Lab ID: MB-142275 7 Method Blank Run: ICPMS208-B 200302A 03/02/20 19:26 <br /> Arsenic ND mg/L 0.0002 <br /> Cadmium ND mg/L 0.00002 <br /> Chromium ND mg/L 0.0002 <br /> Copper 0.002 mg/L 0.0004 <br /> Iron ND mg/L 0.002 <br /> Lead ND mg/L 0.00009 <br /> ' Zinc ND mg/L 0.005 <br /> Lab ID: LCS4-142275 7 Laboratory Control Sample Run: ICPMS208-B_200302A 03/02/20 19:30 <br /> Arsenic 0.0947 mg/L 0.0010 95 85 115 <br /> Cadmium 0.0482 mg/L 0.0010 96 85 115 <br /> Chromium 0.0963 mg/L 0.0050 96 85 115 <br /> Copper 0.103 mg/L 0.0050 103 85 115 <br /> Iron 0.507 mg/L 0.020 101 85 115 <br /> Lead 0.0958 mg/L 0.0010 96 85 115 <br /> Zinc 0.101 mg/L 0.010 101 85 115 <br /> Lab ID: B20021855-001DMS4 7 Sample Matrix Spike Run: ICPMS208-B_200302A 03/02/20 22:33 <br /> Arsenic 0.0983 mg/L 0.0010 98 70 130 <br /> Cadmium 0.0485 mg/L 0.0010 97 70 130 <br /> Chromium 0.0988 mg/L 0.0050 98 70 130 <br /> Copper 0.0995 mg/L 0.0050 99 70 130 <br /> Iron 0.771 mg/L 0.020 99 70 130 <br /> Lead 0.0976 mg/L 0.0010 96 70 130 <br /> Zinc 0.133 mg/L 0.010 101 70 130 <br /> Lab ID: 620021855-001DMSD 7 Sample Matrix Spike Duplicate Run:ICPMS208-B_200302A 03/02/20 22:37 <br /> Arsenic 0.0986 mg/L 0.0010 98 70 130 0.3 20 <br /> Cadmium 0.0488 mg/L 0.0010 97 70 130 0.6 20 <br /> Chromium 0.0987 mg/L 0.0050 98 70 130 0.1 20 <br /> Copper 0.0988 mg/L 0.0050 98 70 130 0.7 20 <br /> Iron 0.777 mg/L 0.020 100 70 130 0.8 20 <br /> Qualifiers: <br /> RL-Analyte Reporting Limit ND-Not detected at the Reporting Limit(RL) <br /> Page 8 of 13 <br />