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November 21, 2018 Lab ID : STK1854539 <br /> Pacific Northwest Oil Customer : 3-16002 <br /> Quality Control-Inorganic <br /> Constituent Method Date/1D Type Units Cone. QC Data DQO Note <br /> Metals <br /> Nickel 200.7 10/20/18:215490AC CCB ppm 0.0006 0.01 <br /> 200.7 11/17/18:216917AC CCV ppm 1.000 92.4% 90-110 <br /> CCB ppm 0.0012 0.01 <br /> CCV ppm 1.000 97.8% 90-110 <br /> CCB ppm -0.0002 0.01 <br /> Selenium 200.7 10/25/18:215742AC CCV ppm 1.000 93.1% 90-110 <br /> CCB ppm -0.0014 0.01 <br /> CCV ppm 1.000 89.8% 90-110 <br /> CCB ppm -0.0010 0.01 <br /> Silver 200.7 10/25/18:215742AC CCV ppm 1.000 99.8% 90-110 <br /> CCB ppm -0.0005 0.01 <br /> CCV ppm 1.000 98.2% 90-110 <br /> CCB ppm -0.0003 0.01 <br /> Thallium 200.7 10/26/18:215829AC CCV ppm 1.000 100% 90-110 <br /> CCB ppm -0.0026 0.01 <br /> CCV ppm 1.000 103% 90-110 <br /> CCB ppm -0.0024 0.01 <br /> Vanadium 200.7 10/20/18:215490AC CCV ppm 1.000 97.7% 90-110 <br /> CCB ppm 0.0017 0.01 <br /> CCV ppm 1.000 103% 90-110 <br /> CCB ppm 1 0.0013 0.01 <br /> Zinc 200.7 10/20/18:215490AC CCV ppm 1.000 93.4% 90-110 <br /> CCB ppm 0.0005 0.02 <br /> CCV ppm 1.000 101% 90-110 <br /> CCB ppm -0.0003 0.02 <br /> Mercury 245.1 10/10/18:214909AC CCV ppb 4.000 102% 90-110 <br /> CCB ppb -0.04 20 <br /> CCV ppb 4.000 103% 90-110 <br /> CCB ppb -0.04 20 <br /> Antimony 3050 10/16/18:212330EMM Blank mg/kg ND <0.5 <br /> LCS mg/kg 24.00 99.0% 85-115 <br /> MS mg/kg 24.00 79.8% 75-125 <br /> (SP 1813098-001) MSD mg/kg 24.00 104% 75-125 <br /> MSRPD mg/kg 40.00 25.0% <20 435 <br /> PDS mg/kg 24.00 113% 75-125 <br /> Arsenic 3050 10/16/18:212330EMM Blank mg/kg ND <0.5 <br /> LCS mg/kg 40.00 95.9% 85-115 <br /> MS mg/kg 40.00 99.7% 75-125 <br /> (SP 1813098-001) MSD mg/kg 40.00 116% 75-125 <br /> MSRPD mg/kg 40.00 14.6% <20 <br /> PDS mg/kg 40.00 118% 75-125 <br /> Barium 3050 10/16/18:212330EMM Blank mg/kg ND <1 <br /> LCS mg/kg 40.00 101% 85-115 <br /> MS mg/kg 40.00 114% 75-125 <br /> (SP 1813098-001) MSD mg/kg 40.00 218% <'/a <br /> MSRPD mg/kg 40.00 17.8% <20 <br /> PDS mg/kg 40.00 139% 75-125 1 430 <br /> Beryllium 3050 10/16/18:212330EMM Blank mg/kg ND <0.3 <br /> LCS mg/kg 40.00 90.3% 85-115 <br /> MS mg/kg 40.00 129% 75-125 435 <br /> (SP 1813098-001) MSD mg/kg 40.00 151% 75-125 435 <br /> MSRPD mg/kg 40.00 15.2% <20 <br /> PDS mg/kg 1 40.00 1 169% 1 75-125 430 <br /> Cadmium 3050 10/16/18:212330EMM I Blank mg/kg ND <0.3 <br /> Page 5 of 7 <br />