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October 24, 2025 <br />Cintas Stockton 922 Lab No. : STK2555289 <br />Customer No. :3015626 <br />Quality Control - Metals <br />Page 5 of 6 Page 5 of 6 <br />MSRPD <br />mg/kg <br />8.3% <br />:520 <br />PDS <br />mg/kg <br />40.00 <br />111% <br />75-125 <br />Lead <br />3050 <br />10/19/2025:211639AC <br />Blank <br />mg/kg <br />ND <br /><1 <br />LCS <br />mg/kg <br />40.00 <br />106% <br />85-115 <br />MS <br />mg/kg <br />40.00 <br />109% <br />75-125 <br />(SP 2516460-003) <br />MSD <br />mg/kg <br />40.00 <br />102% <br />75-125 <br />MSRPD <br />mg/kg <br />6.7% <br />1520 <br />PDS <br />mg/kg <br />40.00 <br />107% <br />75-125 <br />Molybdenum <br />3050 <br />10/19/2025:211639AC <br />Blank <br />mg/kg <br />ND <br /><0.3 <br />LCS <br />mg/kg <br />24.00 <br />101% <br />85-115 <br />MS <br />mg/kg <br />24.00 <br />131% <br />75-125 435 <br />(SP 2516460-003) <br />MSD <br />mg/kg <br />24.00 <br />117% <br />75-125 <br />MSRPD <br />mg/kg <br />9.7% <br />:520 <br />PDS <br />mg/kg <br />24.00 <br />115% <br />75-125 <br />Nickel <br />3050 <br />10/19/2025:211639AC <br />Blank <br />mg/kg <br />ND <br /><0.5 <br />LCS <br />mg/kg <br />40.00 <br />105% <br />85-115 <br />MS <br />mg/kg <br />40.00 <br />111% <br />75-125 <br />(SP 2516460-003) <br />MSD <br />mg/kg <br />40.00 <br />105% <br />75-125 <br />MSRPD <br />mg/kg <br />4.1% <br />:520 <br />PDS <br />mg/kg <br />40.00 <br />109% <br />75-125 <br />Selenium <br />3050 <br />10/19/2025:211639AC <br />Blank <br />mg/kg <br />ND <br /><0.3 <br />LCS <br />mg/kg <br />40.00 <br />108% <br />85-115 <br />MS <br />mg/kg <br />40.00 <br />121% <br />75-125 <br />(SP 2516460-003) <br />MSD <br />mg/kg <br />40.00 <br />122% <br />75-125 <br />MSRPD <br />mg/kg <br />0.1% <br />1520 <br />PDS <br />mg/kg <br />40.00 <br />116% <br />75-125 <br />Silver <br />3050 <br />10/19/2025:211639AC <br />Blank <br />mg/kg <br />ND <br /><1 <br />LCS <br />mg/kg <br />40.00 <br />101% <br />85-115 <br />MS <br />mg/kg <br />40.00 <br />106% <br />75-125 <br />(SP 2516460-003) <br />MSD <br />mg/kg <br />40.00 <br />101% <br />75-125 <br />MSRPD <br />mg/kg <br />5.3% <br />:520 <br />PDS <br />mg/kg <br />40.00 <br />104% <br />75-125 <br />Thallium <br />3050 <br />10/19/2025:211639AC <br />Blank <br />mg/kg <br />ND <br /><1 <br />LCS <br />mg/kg <br />40.00 <br />109% <br />85-115 <br />MS <br />mg/kg <br />40.00 <br />105% <br />75-125 <br />(SP 2516460-003) <br />MSD <br />mg/kg <br />40.00 <br />103% <br />75-125 <br />MSRPD <br />mg/kg <br />1.6% <br /><_20 <br />PDS <br />mg/kg <br />40.00 <br />107% <br />75-125 <br />Vanadium <br />3050 <br />10/19/2025:211639AC <br />Blank <br />mg/kg <br />ND <br /><0.3 <br />LCS <br />mg/kg <br />40.00 <br />103% <br />85-115 <br />MS <br />mg/kg <br />40.00 <br />122% <br />75-125 <br />(SP 2516460-003) <br />MSD <br />mg/kg <br />40.00 <br />106% <br />75-125 <br />MSRPD <br />mg/kg <br />7.1% <br /><_20 <br />PDS <br />mg/kg <br />40.00 <br />116% <br />75-125 <br />Zinc <br />3050 <br />10/19/2025:211639AC <br />Blank <br />mg/kg <br />ND <br /><0.5 <br />LCS <br />mg/kg <br />40.00 <br />106% <br />85-115 <br />MS <br />mg/kg <br />40.00 <br />114% <br />75-125 <br />(SP 2516460-003) <br />MSD <br />mg/kg <br />40.00 <br />102% <br />75-125 <br />MSRPD <br />mg/kg <br />8.1% <br />:520 <br />PDS <br />mg/kg <br />40.00 <br />106% <br />75-125 <br />Page 5 of 6 Page 5 of 6 <br />