2025-08-28_HYDROLOGY - M1983194 ‎(6)‎

• Permit No: M1983194
• IBM Index Class Name: Hydrology
• Doc Date: 8/28/2025
• From: NSI
• To: EPA
• Archive: No

Natural Soda LLC
Quarterly Water Quality Data Tables
3rd Qtr 4th Qtr 1st Qtr
High Low Avg 2023 2023 2024
Field Readings
Sample Date
Field MNL Depth to Water (ft bgs)581.9 561.8 571.7 566.3 569.0 563.5
pH (SI)9.6 8.4 8.9 8.6 8.8 8.9
Temperature (°C)22.2 10.1 17.0 18.9 14.5 11.6
Conductivity (μmhos/cm)4,062 1,432 2,471 2,600 2,630 2,715
Lab Reference Number L82540-03 L84804-03 L86271-02
Sample Date 08/14/23 11/27/23 02/27/24
Major Analytes
Boron (mg/L)1.1 0.2 0.6 0.6 0.6 0.7
Calcium (mg/L)12.2 1.3 3.3 3.2 3.2 3.3
Magnesium (mg/L)17.1 2.4 7.5 10.7 10.4 12.0
Potassium (mg/L)11.3 1.0 4.0 1.1 1.3 1.2
Silica (mg/L)13.9 0.2 9.4 12.4 12.4 12.0
Sodium (mg/L)924 303 538 566 586 669
Strontium (mg/L)1.9 0.2 0.9 1.2 1.2 1.4
Bicarb (HCO3 as CaCO3)1,410 198 752 918 886 970
Carbonate (mg/L)275 53 196 215 235 226
Alkalinity (Total as CaCO3)1,670 377 948 1130 1120 1200
Chloride (mg/L)435 92 184 155.0 179.0 163.0
Conductivity Lab (µmhos/cm)3,800 1,430 2,383 2,660 2,600 2,670
Fluoride (mg/L)17.5 5.5 11.2 10.5 13.3 10.4
Hardness as CaCO3 (mg/L)80.0 13.0 39.0 52.0 51.0 58.0
pH Lab (SI)9.7 8.7 9.1 8.7 8.9 8.8
Sulfate (mg/L)210.0 10.5 63.0 10.5 18.8 17.6
TDS (mg/L) 2,400 843 1,400 1,460 1,510 1,620
Water Level Target Range (ft.)
3rd Qtr 4th Qtr 1st Qtr
High Low Avg 2023 2023 2024
Field Readings
Sample Date
Field MNL Depth to Water (ft bgs)541.5 441.6 457.7 455.6 450.7 450.7
pH (SI)9.5 7.0 8.9 9.4 9.5 9.5
Temperature (°C)25.5 11.0 16.6 15.6 11.1 11.0
Conductivity (μmhos/cm)1,620 1,383 1,467 1,383 1,460 1,471
Lab Reference Number L82540-04 L84804-01 L85881-01
Sample Date 08/15/23 11/27/23 01/29/24
Major Analytes
Boron (mg/L)0.8 0.7 0.7 0.8 0.8 0.8
Calcium (mg/L)17.4 2.4 4.0 2.5 2.6 2.5
Magnesium (mg/L)10.8 1.8 2.8 2.2 2.0 2.0
Potassium (mg/L)8.0 3.8 5.3 4.0 4.0 3.8
Silica (mg/L)15.8 3.3 4.9 4.4 3.9 3.7
Sodium (mg/L)356 332 348 332 341 355
Strontium (mg/L)0.7 0.5 0.6 0.6 0.6 0.6
Bicarb (HCO3 as CaCO3)599 403 495 403 429 441
Carbonate (mg/L)323 192 255 320 295 260
Alkalinity (Total as CaCO3)802 702 750 723 723 702
Chloride (mg/L)1070.0 22.9 108.9 22.9 1070.0 24.6
Conductivity Lab (µmhos/cm)1,610 1,460 1,517 1,500 1,460 1,500
Fluoride (mg/L)22.7 16.7 20.4 16.7 17.3 19.0
Hardness as CaCO3 (mg/L)88.0 14.0 21.6 15.0 15.0 15.0
pH Lab (SI)9.7 9.2 9.4 9.4 9.4 9.3
Sulfate (mg/L)0.0 0.0 U U U U
TDS (mg/L) 1,880 824 951 824 1,880 837
Water Level Target Range (ft.)
565.00 -- 585.00
Historical #'s
AG-1 Quarterly
A-Groove
Historical #'s
438.00 -- 458.00
BG-10 Quarterly
B-Groove
08/14/23
08/15/23
11/27/23
01/29/24
02/27/24
01/29/24

Daub & Associates, Inc.

Page 77 of 81
Natural Soda LLC
2024 1st Quarter EPA Report