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December 9, 2022 <br /> Lab No. : STK2256435 <br /> Luhdorff& Scalmanini Consulting <br /> Customer No. : 3012023 <br /> Quality Control -Wet Chem <br /> Wet Chem <br /> Alkalinity(as CaCO3) 2320B 11/17/2022:213107STA ND mg/L 1.32% 10 <br /> 2320B (SP 2218210-003) Dup mg/L 1.85% 10 <br /> 2320B (CH 2279713-001) Dup mg/L 2.26% 10 <br /> Bicarbonate 2320B (SP 2218104-001) Dup mg/L 1.32% 10 <br /> 2320B (SP 2218210-003) Dup mg/L 1.76% 10 <br /> 2320B (CH 2279713-001) Dup mg/L 2.27% 10 <br /> E.C. 2320B (SP 2218104-001) Dup umhos/cm 0.09% 5 <br /> 2320B (SP 2218210-003) Dup umhos/cm 0.08% 5 <br /> 2320B (CH 2279713-001) Dup umhos/cm 0% 5 <br /> pH 2320B (SP 2218104-001) Dup units 0.1% 4.80 <br /> 2320B (SP 2218210-003) Dup units 0% 4.80 <br /> 2320B (CH 2279713-001) Dup units 0.2% 4.80 <br /> Solids,Total Dissolved 2540CE 11/17/2022:213101CTL Blank mg/L ND <20 <br /> LCS mg/L 990.8 99.1 % 90-110 <br /> (CC 2284345-001) Dup mg/L 1.6% 5 <br /> (CC 2284345-001) Dup mg/L 0.0% 5 <br /> Chloride 300.0 12/03/2022:213702LDM Blank mg/L 1 <1 <br /> LCS mg/L 25.00 97.1 % 90-110 <br /> MS mg/L 50.00 87.7% 85-121 <br /> (VI 2248997-001) MSD mg/L 50.00 93.1% 85-121 <br /> MSRPD mg/L 10.00 3.2% :519 <br /> MS mg/L 50.00 88.3% 85-121 <br /> (VI 2249217-001) MSD mg/L 50.00 94.2% 85-121 <br /> MSRPD mg/L 10.00 4.0% :519 <br /> 300.0 12/05/2022:213747LDM Blank mg/L ND <1 <br /> LCS mg/L 25.00 102% 90-110 <br /> MS mg/L 50.00 93.0% 85-121 <br /> (SP 2218994-001) MSD mg/L 50.00 100% 85-121 <br /> MSRPD mg/L 10.00 5.5% :519 <br /> MS mg/L 50.00 98.4% 85-121 <br /> (SP 2219061-001) MSD mg/L 50.00 95.5% 85-121 <br /> MSRPD mg/L 10.00 2.0% :519 <br /> Blank mg/L ND <1 <br /> LCS mg/L 25.00 106% 90-110 <br /> MS mg/L 50.00 95.9% 85-121 <br /> (STK2256231-004) MSD mg/L 50.00 90.5% 85-121 <br /> MSRPD mg/L 10.00 3.0% :519 <br /> MS mg/L 50.00 106% 85-121 <br /> (STK2256193-001) MSD mg/L 50.00 101 % 85-121 <br /> MSRPD mg/L 10.00 3.9% :519 <br /> Fluoride 300.0 12/03/2022:213702LDM Blank mg/L 1 <0.1 <br /> LCS mg/L 2.500 100% 90-110 <br /> MS mg/L 5.000 99.6% 87-120 <br /> (VI 2248997-001) MSD mg/L 5.000 105% 87-120 <br /> MSRPD mg/L 10.00 5.6% :516 <br /> MS mg/L 5.000 97.2% 87-120 <br /> (VI 2249217-001) MSD mg/L 5.000 104% 87-120 <br /> MSRPD mg/L 10.00 6.5% _<16 <br /> 300.0 12/05/2022:213747LDM Blank mg/L ND <0.1 <br /> LCS mg/L 2.500 103% 90-110 <br /> Page 15 of 17 Page 15 of 17 <br />