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November 21, 2018 Lab ID : STKI854539 <br /> Pacific Northwest Oil Customer : 3-16002 <br /> Quality Control-Inorganic <br /> Constituent Method Date/ID Type Units Conc. QC Data DQO Note <br /> Metals <br /> Cadmium 3050 10/16/18:212330EMM LCS mg/kg 40.00 92.5% 85-115 <br /> MS mg/kg 40.00 131% 75-125 435 <br /> (SP 1813098-001) MSD mg/kg 40.00 150% 75-125 435 <br /> MSRPD mg/kg 40.00 13.2% <_20 <br /> PDS m 40.00 165% 1 75-125 430 <br /> Chromium 3050 10/16/18:212330EMM Blank mg/kg ND <0.5 <br /> LCS mg/kg 40.00 98.8% 85-115 <br /> MS mg/kg 40.00 98.7% 75-125 <br /> (SP 1813098-001) MSD mg/kg 40.00 121% 75-125 <br /> MSRPD mg/kg 40.00 17.7% <_20 <br /> PDS m 40.00 115% 75-125 <br /> Cobalt 3050 10/16/18:212330EMM Blank mg/kg ND <0.5 <br /> LCS mg/kg 40.00 99.3% 85-115 <br /> MS mg/kg 40.00 96.9% 75-125 <br /> (SP 1813098-001) MSD mg/kg 40.00 123% 75-125 <br /> MSRPD mg/kg 40.00 23.1% <20 435 <br /> PDS m 40.00 119% 1 75-125 <br /> Copper 3050 10/16/18:212330EMM Blank mg/kg ND <0.5 <br /> LCS mg/kg 40.00 106% 85-115 <br /> MS mg/kg 40.00 216% <'/4 <br /> (SP 1813098-001) MSD mg/kg 40.00 410% <'/4 <br /> MSRPD mg/kg 40.00 14.5% <20 <br /> PDS mg/kg 40.00 149% 75-125 430 <br /> Lead 3050 10/16/18:212330EMM Blank mg/kg ND <1 <br /> LCS mg/kg 40.00 93.2% 85-115 <br /> MS mg/kg 40.00 132% 75-125 435 <br /> (SP 1813098-001) MSD mg/kg 40.00 169% 75-125 435 <br /> MSRPD mg/kg 40.00 19.6% <20 <br /> PDS mg/kg 40.00 182% 1 75-125 430 <br /> Molybdenum 3050 10/16/18:212330EMM Blank mg/kg ND <1 <br /> LCS mg/kg 24.00 104% 85-115 <br /> MS mg/kg 24.00 90.1% 75-125 <br /> (SP 1813098-001) MSD mg/kg 24.00 121% 75-125 <br /> MSRPD mg/kg 40.00 24.1% <_20 435 <br /> PDS mg/kg 24.00 112% 75-125 <br /> Nickel 3050 10/16/18:212330EMM Blank mg/kg ND <0.5 <br /> LCS mg/kg 40.00 98.1% 85-115 <br /> MS mg/kg 40.00 100% 75-125 <br /> (SP 1813098-001) MSD mg/kg 40.00 123% 75-125 <br /> MSRPD mg/kg 40.00 17.1% <_20 <br /> PDS mg/kg 40.00 118% 1 75-125 <br /> Selenium 3050 10/16/18:212330EMM Blank mg/kg ND <0.5 <br /> LCS mg/kg 40.00 115% 85-115 <br /> MS mg/kg 40.00 175% 75-125 435 <br /> (SP 1813098-001) MSD mg/kg 40.00 164% 75-125 435 <br /> MSRPD mg/kg 40.00 6.1% <_20 <br /> PDS m 40.00 140% 75-125 430 <br /> Silver 3050 10/16/18:212330EMM Blank mg/kg ND <0.5 <br /> LCS mg/kg 40.00 103% 85-115 <br /> MS mg/kg 40.00 101% 75-125 <br /> (SP 1813098-001) MSD mg/kg 40.00 120% 75-125 <br /> MSRPD mg/kg 40.00 16.5% <_20 <br /> PDS m 40.00 1 120% 1 75-125 <br /> Thallium 1 3050 10/16/18:212330EMM I Blank mg/kg ND <0.5 <br /> Page 6 of 7 <br />