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June 10, 2025 <br /> Lab No. : STK2537025 <br /> Luhdorff& Scalmanini Consulting <br /> Customer No. : 3012023 <br /> Quality Con■troll-- Wet Chem <br /> . ®� . <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B (STK2536875-005) Dup mg/L 0.3% 10 <br /> 2320B (STK2536929-002) Dup mg/L 0.08% 10 <br /> 2320B (STK2537195-001) Dup mg/L 0.06% 10 <br /> Bicarbonate 2320B (STK2536875-005) Dup mg/L 0.3% 10 <br /> 2320B (STK2536929-002) Dup mg/L 0.09% 10 <br /> 2320B (STK2537195-001) Dup mg/L 0.6% 10 <br /> Carbonate 2320B (STK2536875-005) Dup mg/L 0% 10 <br /> 2320B (STK2536929-002) Dup mg/L 0% 10 <br /> 2320B (STK2537195-001) Dup mg/L 0% 10 <br /> E.C. 2320B (STK2536875-005) Dup umhos/cm 0.4% 5 <br /> 2320B (STK2536929-002) Dup umhos/cm 0.09% 5 <br /> 2320B (STK2537195-001) Dup umhos/cm 0% 5 <br /> Hydroxide 2320B (STK2536875-005) Dup mg/L 0% 10 <br /> 2320B (STK2536929-002) Dup mg/L 0% 10 <br /> 2320B (STK2537195-001) Dup mg/L 0% 10 <br /> Solids,Total Dissolved 2540CE 05/19/2025:205474CTL Blank mg/L ND <10 <br /> LCS mg/L 991.1 102% 90-110 <br /> (SP 2508070-001) Dup mg/L 4.48% 12.2 <br /> (SP 2508070-001) Dup mg/L 1.25% 12.2 <br /> 2540CE 05/19/2025:20546OCTL Blank mg/L ND <20 <br /> LCS mg/L 991.1 101% 90-110 <br /> (VI2543427-002) Dup mg/L 2.50% 5 <br /> (VI2543427-002) Dup mg/L 0.9% 5 <br /> Blank mg/L ND <20 <br /> LCS mg/L 991.1 105% 90-110 <br /> (STK2536875-004) Dup mg/L 1.17% 5 <br /> (STK2536875-004) Dup mg/L 0.8% 5 <br /> 2540CE 05/20/2025:205523CTL Blank mg/L ND <10 <br /> LCS mg/L 991.1 104% 90-110 <br /> (SP 2508205-002) Dup mg/L 0.3% 12.2 <br /> (SP 2508205-002) Dup mg/L 3.00% 12.2 <br /> Chloride 300.0 05/2012025:205618LDM Blank mg/L ND <1 <br /> LCS mg/L 25.00 104% 90-110 <br /> MS mg/L 50.00 103% 67-117 <br /> (STK2536976-001) MSD mg/L 50.00 103% 67-117 <br /> MSRPD mg/L 0.1% s7 <br /> MS mg/L 50.00 105% 67-117 <br /> (CH 2574334-001) MSD mg/L 50.00 105% 67-117 <br /> MSRPD mg/L 0.2% :57 <br /> 300.0 05/23/2025:205706LDM Blank mg/L ND <1 <br /> LCS mg/L 25.00 106% 90-110 <br /> MS mg/L 50.00 90.8% 67-117 <br /> (CH 2574510-001) MSD mg/L 50.00 91.0% 67-117 <br /> MSRPD mg/L 0.1% 57 <br /> MS mg/L 50.00 95.8% 67-117 <br /> (STK2537324-001) MSD mg/L 50.00 96.1% 67-117 <br /> MSRPD mg/L 0.2% <_7 <br /> 300.0 06/04/2025:20611OLDM Blank mg/L ND <1 <br /> LCS mg/L 25.00 106% 90-110 <br /> MS mg/L 50.00 99.1% 67-117 <br /> Page 18 of 21 Page 18 of 21 <br />