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ACZ Laboratories, Inc. <br />Natural Soda, LLC ACZ Sample ID: L95319-06 <br />Project ID: Date Sampled: 06110125 14:24 <br />Sample ID: BARREN Date Received: 06/12/25 <br />Sample Matrix: Groundwater <br />Wet Chemistry <br />Alkalinity as CaCO3 <br />SM 2320 B-2011 <br />Bicarbonate as <br />1 <br />41900 <br />mg/L <br />3 <br />20 <br />06/24/25 0:00 <br />jck <br />CaCO3 <br />Carbonate as CaCO3 <br />1 <br />27500 <br />mg/L <br />3 <br />20 <br />06/24/25 0:00 <br />jck <br />Hydroxide as CaCO3 <br />1 <br /><3 <br />U <br />mg/L <br />3 <br />20 <br />06/24/25 0:00 <br />jck <br />Total Alkalinity <br />1 <br />69500 <br />mg/L <br />3 <br />20 <br />06/24/25 0:00 <br />jck <br />Bromide <br />EPA 300.0 <br />200 <br /><10 <br />U <br />mg/L <br />10 <br />50 <br />06/17/25 3:12 <br />bls <br />Cation -Anion Balance <br />Calculation <br />Cation -Anion Balance <br />4.9 <br />% <br />07/07/25 0:00 <br />calc <br />Sum of Anions <br />1860 <br />meq/L <br />07/07/25 0:00 <br />calc <br />Sum of Cations <br />2050 <br />meq/L <br />07/07/25 0:00 <br />calc <br />Chemical Oxygen <br />EPA 410.4 <br />20 <br />515 <br />* mg/L <br />200 <br />400 <br />06/24/25 10:14 <br />cob <br />Demand <br />Chloride <br />EPA 300.0 <br />500 <br />16700 <br />mg/L <br />200 <br />1000 <br />06/20/25 21:41 <br />bls <br />Conductivity @25C <br />SM 2510 B-2011 <br />1 <br />74200 <br />umhos/cm <br />1 <br />10 <br />06/19/25 13:33 <br />asn cjk <br />Fluoride <br />EPA 300.0 <br />200 <br />154 <br />mg/L <br />10 <br />50 <br />06/17/25 3:12 <br />bls <br />Hardness as CaCO3 <br />Calculation (SM 2340 B-2011) <br />27 <br />B <br />mg/L <br />20 <br />500 <br />07/07/25 0:00 <br />calc <br />(dissolved) <br />Lab Filtration (0.45um <br />SOPWC050 <br />1 <br />06/23/25 12:30 <br />rap <br />fi Iter) <br />Nitrate as N <br />Calculation (IV031\102-NO2) <br />0.211 <br />BH <br />mg/L <br />0.2 <br />1 <br />07/07/25 0:00 <br />calc <br />Nitrate/Nitrite as N <br />EPA 353.2 <br />10 <br />0.211 <br />BH <br />mg/L <br />0.2 <br />1 <br />06/14/25 3:38 <br />pjb <br />Nitrite as N <br />EPA 353.2 <br />10 <br /><0.1 <br />UH <br />mg/L <br />0.1 <br />0.5 <br />06/14/25 3:38 <br />pjb <br />Nitrogen, ammonia <br />EPA 350.1 <br />50 <br />141 <br />mg/L <br />5 <br />10 <br />06/19/25 15:13 <br />gfm <br />Nitrogen, organic <br />Calculation (TKN-NH3) <br /><8 <br />U <br />mg/L <br />8 <br />20 <br />07/07/25 0:00 <br />calc <br />Nitrogen, total Kjeldahl <br />EPA 351.2 <br />40 <br />136 <br />mg/L <br />8 <br />20 <br />06/21/25 3:36 <br />pjb <br />pH (lab) <br />SM 4500-H+ B-2011 <br />pH <br />1 <br />8.8 <br />H <br />units <br />0.1 <br />0.1 <br />06/19/25 0:00 <br />asn cjk <br />pH measured at <br />1 <br />21.6 <br />C <br />0.1 <br />0.1 <br />06/19/25 0:00 <br />asn cjk <br />Phosphate, total <br />Calculation (total Phosphorus) <br />157 <br />mg/L <br />3 <br />20 <br />07/07/25 0:00 <br />calc <br />Phosphorus, total <br />EPA 365.1 <br />100 <br />50.8 <br />mg/L <br />1 <br />5 <br />06/20/25 11:50 <br />ems <br />Residue, Filterable <br />SM 2540 C-2011 <br />50 <br />105000 <br />mg/L <br />1000 <br />2000 <br />06/16/25 10:53 <br />cob <br />(TDS) @180C <br />Sodium Adsorption <br />USGS-11738-78 <br />3900 <br />07/07/25 0:00 <br />calc <br />Ratio in Water <br />Sulfate <br />EPA 300.0 <br />200 <br /><180 <br />U <br />mg/L <br />180 <br />400 <br />06/17/25 3:12 <br />bls <br />Sulfide as S <br />SM 4500-S2 D-2011 <br />37.5 <br /><0.75 <br />U <br />mg/L <br />0.75 <br />3.75 <br />06/13/25 11:40 <br />cob <br />TDS (calculated) <br />Calculation <br />105700.4 <br />mg/L <br />07/07/25 0:00 <br />calc <br />TDS (ratio - <br />Calculation <br />0.99 <br />07/07/25 0:00 <br />talc <br />measured/calculated) <br />Natural Soda LLC <br />Daub & Associates, Inc. Page 78 of 88 2025 2nd Quarter EPA Report <br />