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December 17, 2025 Lab No. : STK2558219 Luhdorff& Scalmanini Consulting Customer No. : 3012023 Quality Control -Wet Chem Wet Chem Alkalinity(as CaCO3) 2320B (CH 2591551-001) Dup mg/L 0.5% 10 (VI2548701-001) Dup mg/L 3.38% 10 2320B (STK2558577-002) Dup mg/L 0.8% 10 Bicarbonate 2320B (CH 2591551-001) Dup mg/L 0.5% 10 (VI2548701-001) Dup mg/L 2.23% 10 2320B (STK2558577-002) Dup mg/L 0.8% 10 Carbonate 2320B (CH 2591551-001) Dup mg/L 0% 10 (VI2548701-001) Dup mg/L 13.3% 10 440 2320B (STK2558577-002) Dup mg/L 0% 10 E.C. 2320B (CH 2591551-001) Dup umhos/cm 0% 5 (VI2548701-001) Dup umhos/cm 0.4% 5 2320B (STK2558577-002) Dup umhos/cm 0% 5 Hydroxide 2320B (CH 2591551-001) Dup mg/L 0% 10 (VI2548701-001) Dup mg/L 13.3% 10 440 2320B (STK2558577-002) Dup mg/L 0% 10 Solids,Total Dissolved 2540CE 12/03/2025:213514CTL Blank mg/L ND <20 LCS mg/L 991.1 102% 90-110 (SP 2520512-001) Dup mg/L 3.23% 5 (SP 2520512-001) Dup mg/L 1.01% 5 Blank mg/L ND <20 LCS mg/L 991.1 98.1% 90-110 (CC 2584132-002) Dup mg/L 1.98% 5 (CC 2584132-002) Dup mg/L 0.7% 5 Chloride 300.0 12/03/2025:213527LDM Blank mg/L ND <1 LCS mg/L 25.00 107% 90-110 MS mg/L 50.00 109% 67-117 (SP 2520408-005) MSD mg/L 50.00 108% 67-117 MSRPD mg/L 0.1% 57 MS mg/L 50.00 104% 67-117 (SP 2520511-001) MSD mg/L 50.00 105% 67-117 MSRPD mg/L 0.1% 57 300.0 12/08/2025:213682LDM Blank mg/L ND <1 LCS mg/L 25.00 107% 90-110 MS mg/L 50.00 89.3% 67-117 (VI2548587-001) MSD mg/L 50.00 91.2% 67-117 MSRPD mg/L 0.9% :57 MS mg/L 50.00 102% 67-117 (STK2558203-001) MSD mg/L 50.00 102% 67-117 MSRPD mg/L 0.0% <_7 Blank mg/L ND <1 LCS mg/L 25.00 107% 90-110 MS mg/L 50.00 103% 67-117 (CH 2591776-001) MSD mg/L 50.00 103% 67-117 MSRPD mg/L 0.2% 57 MS mg/L 50.00 81.9% 67-117 (STK2558219-004) MSD mg/L 50.00 85.9% 67-117 MSRPD mg/L 1.8% 57 300.0 12/09/2025:213752LDM Blank mg/L ND <1 LCS mg/L 25.00 109% 90-110 MS mg/L 50.00 95.8% 67-117 Page 14 of 17 Page 14 of 17