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September 24, 2021 Lab ID : STK2152815 <br />Metal Finishing Solutions, Inc. Customer :3-18181 <br />Quality Control - Inorganic <br />Constituent <br />Method <br />Date/ID <br />Type <br />Units <br />Cone. <br />QC Data <br />DQO <br />Note <br />Metals <br />Thallium <br />200.8 <br />09/22/21:214779AC <br />CCB <br />ppb <br />0.007 <br />0.2 <br />CCV <br />ppb <br />120.0 <br />98.9% <br />90-110 <br />CCB <br />ppb <br />0.003 <br />0.2 <br />200.8 <br />09/22/21:214828AC <br />ICV <br />ppb <br />120.0 <br />101% <br />90-110 <br />ICB <br />ppb <br />0.024 <br />0.2 <br />II <br />CCV <br />ppb <br />120.0 <br />102% <br />90-110 <br />II <br />CCB <br />ppb <br />0.009 <br />0.2 <br />Vanadium <br />200.8 <br />09/16/21:210733CTC <br />Blank <br />ug/L <br />ND <br /><2 <br />LCS <br />ug/L <br />50.00 <br />104% <br />85-115 <br />MS <br />ug/L <br />50.00 <br />121% <br />75-125 <br />MS <br />ug/L <br />50.00 <br />122% <br />75-125 <br />(CC 2183269-001) <br />MSD <br />ug/L <br />50.00 <br />128% <br />75-125 <br />435 <br />MSRPD <br />ug/L <br />50.00 <br />5.4% <br /><20 <br />(CC 2183269-002) <br />MSD <br />ug/L <br />50.00 <br />123% <br />75-125 <br />MSRPD <br />ug/L <br />50.00 <br />1.0% <br /><20 <br />200.8 <br />09/22/21:214779AC <br />CCV <br />ppb <br />120.0 <br />102% <br />90-110 <br />CCB <br />ppb <br />0.11 <br />2 <br />CCV <br />ppb <br />120.0 <br />98.8% <br />90-110 <br />CCB <br />ppb <br />0.06 <br />2 <br />200.8 <br />09/22/21:214828AC <br />ICV <br />ppb <br />120.0 <br />101% <br />90-110 <br />ICB <br />ppb <br />0.03 <br />2 <br />CCV <br />ppb <br />120.0 <br />101% <br />90-110 <br />CCB <br />ppb <br />0.08 <br />2 <br />inc <br />200.8 <br />09/16/21:210733CTC <br />Blank <br />ug/L <br />ND <br /><20 <br />LCS <br />ug/L <br />50.00 <br />109% <br />85-115 <br />MS <br />ug/L <br />50.00 <br />175% <br />75-125 <br />435 <br />MS <br />ug/L <br />50.00 <br />225% <br />75-125 <br />435 <br />(CC 2183269-001) <br />MSD <br />ug/L <br />50.00 <br />191% <br />75-125 <br />435 <br />MSRPD <br />ug/L <br />50.00 <br />2.7% <br /><_20 <br />(CC 2183269-002) <br />MSD <br />ug/L <br />50.00 <br />221% <br />75-125 <br />435 <br />MSRPD <br />ug/L <br />50.00 <br />1.1% <br /><20 <br />200.8 <br />09/22/21:214779AC <br />CCV <br />ppb <br />120.0 <br />105% <br />90-110 <br />CCB <br />ppb <br />0.02 <br />10 <br />CCV <br />ppb <br />120.0 <br />102% <br />90-110 <br />CCB <br />ppb <br />-0.005 <br />10 <br />200.8 <br />09/22/21:214828AC <br />ICV <br />ppb <br />120.0 <br />102% <br />90-110 <br />ICB <br />ppb <br />-0.4 <br />10 <br />CCV <br />ppb <br />120.0 <br />103% <br />90-110 <br />CCB <br />ppb <br />-0.4 <br />10 <br />Mercury <br />245.1 <br />09/20/21:210866AC <br />Blank <br />ug/L <br />IND <br /><0.02 <br />LCS <br />ug/L <br />0.2000 <br />99.3% <br />85-115 <br />MS <br />ug/L <br />0.2000 <br />99.3% <br />75-125 <br />(SP 2112009-001) <br />MSD <br />ug/L <br />0.2000 <br />92.5% <br />75-125 <br />MSRPD <br />ug/L <br />0.2000 <br />7.0% <br /><20 <br />245.1 <br />09/20/21:214647AC <br />CCV <br />ppt <br />200.0 <br />103% <br />90-110 <br />CCB <br />ppt <br />-2.4 <br />20 <br />CCV <br />ppt <br />200.0 <br />91.8% <br />90-110 <br />CCB <br />ppt <br />-2.2 <br />20 <br />CCV <br />ppt <br />200.0 <br />103% <br />90-110 <br />CCB <br />ppt <br />-2.4 <br />20 <br />Wet Chem <br />Fluoride <br />300.0 <br />09/20/21:210906NJB <br />Blank <br />mg/L <br />ND <br /><0.1 <br />LCS <br />mg/L <br />2.500 <br />102% <br />90-110 <br />MS <br />m L <br />5.000 <br />104% <br />87-120 <br />Page 14 of 15 <br />