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Natural Soda LLC <br />Quarterly Water Quality Data Tables <br />89-1 Quarterly <br />Historical Vs <br />4th Qtr <br />1st Qtr <br />2nd Qtr <br />B-Groove <br />High Low Avg <br />2024 <br />2025 <br />2025 <br />Field Readings <br />11/26/24 <br />02/15/25 <br />06/10/25 <br />Sample Date <br />Field MNL Depth to Water (ft bgs) <br />500.7 432.4 472.9 <br />465.7 <br />468.6 <br />468.2 <br />pH (51) <br />10.1 7.1 9.0 <br />8.7 <br />8.5 <br />8.7 <br />Temperature (°C) <br />19.0 7.5 12.5 <br />7.5 <br />11.3 <br />15.4 <br />Conductivity (µmhos/cm) <br />1,683 925 1,343 <br />1,354 <br />1 1,370 <br />1,321 <br />Lab Reference Number <br />L91765-04 <br />L93144-03 <br />L95319-04 <br />Sample Date <br />11/26/24 <br />02/18/25 <br />06/10/25 <br />Major Analytes <br />Boron (mg/L) <br />3.3 0.4 0.7 <br />0.7 <br />0.7 <br />0.7 <br />Calcium (mg/L) <br />23.0 0.5 2.3 <br />2.5 <br />2.8 <br />2.6 <br />Magnesium (mg/L) <br />8.0 0.3 1.4 <br />1.5 <br />1.5 <br />1.6 <br />Potassium (mg/L) <br />23.0 0.6 1.3 <br />0.8 <br />0.7 <br />0.8 <br />Silica (mg/L) <br />35.9 2.8 16.8 <br />14.7 <br />14.5 <br />14.7 <br />Sodium (mg/L) <br />408 202 348 <br />327 <br />330 <br />337 <br />Strontium (mg/L) <br />0.8 0.1 0.5 <br />0.7 <br />0.6 <br />0.7 <br />Bicarb (HCO3 as CaCO3) <br />762 244 610 <br />270 <br />703 <br />568 <br />Carbonate(mg/L) <br />489 25 102 <br />489 <br />30 <br />151 <br />Alkalinity (Total as CaCO3) <br />830 200 712 <br />758 <br />733 <br />720 <br />Chloride (mg/L) <br />70.5 U 15.1 <br />10.2 <br />13.6 <br />12.3 <br />Conductivity Lab (µmhos/cm) <br />2,850 2,000 1,392 <br />1,390 <br />1,400 <br />1,420 <br />Fluoride (mg/L) <br />38.2 0.2 23.7 <br />18.7 <br />24.2 <br />22.7 <br />Hardness as CaCO3 (mg/L) <br />65.0 0.0 11.3 <br />12.0 <br />13.0 <br />13.0 <br />pH Lab (51) <br />9.8 8.1 8.9 <br />8.5 <br />8.7 <br />8.8 <br />Sulfate (mg/L) <br />140.0 U 20.1 <br />u <br />U <br />u <br />TDS(mg/L) <br />1,100 446 861 <br />838 <br />839 <br />833 <br />Water Level Target Range (ft.) <br />463.00 -- 483.00 <br />89-2 Quarterly <br />Historical #'s <br />4th Qtr <br />1st Qtr <br />2nd Qtr <br />A -Groove <br />High Low Avg <br />2024 <br />2025 <br />2025 <br />Field Readings <br />11/26/24 <br />02/18/25 <br />06/10/25 <br />Sample Date <br />Field MNL Depth to Water (ft bgs) <br />545.2 464.0 498.6 <br />511.0 <br />508.0 <br />531.7 <br />pH (51) <br />10.0 6.8 9.1 <br />9.0 <br />9.1 <br />9.1 <br />Temperature (°C) <br />17.4 8.1 12.3 <br />10.8 <br />11.6 <br />13.9 <br />Conductivity (µmhos/cm) <br />1,980 620 1,222 <br />1,220 <br />1 1,226 <br />1,214 <br />Lab Reference Number <br />L91765-03 <br />L93144-02 <br />L95319-05 <br />Sample Date <br />11/26/24 <br />02/18/25 <br />06/10/25 <br />Major Analytes <br />Boron (mg/L) <br />1.5 0.2 0.4 <br />0.3 <br />0.4 <br />0.3 <br />Calcium (mg/L) <br />141.0 0.3 2.5 <br />2.7 <br />2.4 <br />2.2 <br />Magnesium (mg/L) <br />9.1 0.2 1.3 <br />1.5 <br />1.4 <br />1.4 <br />Potassium (mg/L) <br />12.5 0.5 1.3 <br />0.8 <br />0.6 <br />0.8 <br />Silica (mg/L) <br />27.7 2.0 12.4 <br />6.4 <br />5.0 <br />5.5 <br />Sodium (mg/L) <br />1,530 9 320 <br />300 <br />313 <br />298 <br />Strontium (mg/L) <br />1.3 0.0 0.2 <br />0.3 <br />0.2 <br />0.2 <br />Bicarb (HCO3 as CaCO3) <br />903 41 515 <br />138 <br />542 <br />452 <br />Carbonate(mg/L) <br />566 8 96 <br />534 <br />105 <br />179 <br />Alkalinity (Total as CaCO3) <br />926 260 609 <br />672 <br />647 <br />632 <br />Chloride (mg/L) <br />118.0 U 18.9 <br />12.3 <br />16.9 <br />25.9 <br />Conductivity Lab (µmhos/cm) <br />1,760 2,000 1,257 <br />1,250 <br />1,270 <br />1,280 <br />Fluoride (mg/L) <br />30.0 1.9 21.2 <br />16.5 <br />21.3 <br />29.9 <br />Hardness as CaCO3 (mg/L) <br />375.0 u 11.8 <br />13.0 <br />12.0 <br />22.0 <br />PH Lab (SI) <br />9.7 8.0 8.9 <br />8.9 <br />9.3 <br />9.1 <br />Sulfate (mg/L) <br />445.0 u 40.8 <br />u <br />u <br />U <br />TDS(mg/L) <br />2,040 494 783 <br />747 <br />756 <br />729 <br />Water Level Target Range (ft.) <br />486.00 -- 506.00 <br />Daub & Associates, Inc. <br />Natural Soda LLC <br />Page 82 of 88 2025 2nd Quarter EPA Report <br />