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ACZ Laboratories, Inc. <br />Natural Soda, LLC <br />Project ID: <br />Sample ID: BG-6 <br />Inorganic Prep <br />ACZ Sample ID: <br />L95319-02 <br />Date Sampled: <br />06/09/25 13:10 <br />Date Received: <br />06112125 <br />Sample Matrix: <br />Groundwater <br />aiethod unution <br />Resulte <br />■ <br />■ <br />■ <br />■. <br />Lab Filtration (0.45um) <br />EPA 200.7/200.8/3005A Filter <br />06/24/25 14:00 <br />aeh <br />& Acidification <br />Metals Analysis <br />Parameter <br />EPA Method Dilution <br />Result <br />Qual XQ Units <br />MDL <br />PQL <br />Date Analyst <br />Boron, dissolved <br />EPA 200.7 <br />1 <br />0.707 <br />mg/L <br />0.03 <br />0.1 <br />06/26/25 23:40 <br />msp <br />Calcium, dissolved <br />EPA 200.7 <br />1 <br />2.51 <br />mg/L <br />0.1 <br />0.5 <br />06/26/25 23:40 <br />msp <br />Magnesium, dissolved <br />EPA 200.7 <br />1 <br />1.54 <br />mg/L <br />0.2 <br />1 <br />06/26/25 23:40 <br />msp <br />Potassium, dissolved <br />EPA 200.7 <br />1 <br />0.84 <br />B mg/L <br />0.5 <br />1 <br />06/26/25 23:40 <br />msp <br />Silica, dissolved <br />EPA 200.7 <br />1 <br />16.0 <br />mg/L <br />0.2 <br />1 <br />06/26/25 23:40 <br />msp <br />Sodium, dissolved <br />EPA 200.7 <br />1 <br />354 <br />mg/L <br />0.2 <br />1 <br />06/26/25 23:40 <br />msp <br />Strontium, dissolved <br />EPA 200.7 <br />1 <br />0.696 <br />mg/L <br />0.009 <br />0.045 <br />06/26/25 23:40 <br />msp <br />Wet Chemistry <br />Alkalinity as CaCO3 <br />SM 2320 B-2011 <br />Bicarbonate as <br />CaCO3 <br />Carbonate as CaCO3 <br />Hydroxide as CaCO3 <br />Total Alkalinity <br />Cation -Anion Balance <br />Calculation <br />Cation -Anion Balance <br />Sum of Anions <br />Sum of Cations <br />Chloride <br />EPA 300.0 <br />Conductivity @25C <br />SM 2510 B-2011 <br />Fluoride <br />EPA 300.0 <br />Hardness as CaCO3 <br />Calculation (SM 2340 B-2011) <br />(dissolved) <br />Lab Filtration (0.45um <br />SOPWC050 <br />filter) <br />pH (lab) <br />SM 4500-H+ B-2011 <br />pH <br />pH measured at <br />Residue, Filterable <br />SM 2540 C-2011 <br />(TDS) @180C <br />Sodium Adsorption <br />USGS - 11738-78 <br />Ratio in Water <br />Sulfate <br />EPA 300.0 <br />TDS (calculated) <br />Calculation <br />TDS (ratio - <br />Calculation <br />measured/calculated) <br />1 <br />614 <br />mg/L <br />2 <br />20 <br />06/19/25 0:00 <br />asn cjk <br />1 <br />150 <br />mg/L <br />2 <br />20 <br />06/19/25 0:00 <br />asn cjk <br />1 <br /><2 <br />U <br />mg/L <br />2 <br />20 <br />06/19/25 0:00 <br />asn cjk <br />1 <br />764 <br />mg/L <br />2 <br />20 <br />06/19/25 0:00 <br />asn cjk <br />-3.0 <br />% <br />07/07/25 0:00 <br />calc <br />17 <br />meq/L <br />07/07/25 0:00 <br />calc <br />16 <br />meq/L <br />07/07/25 0:00 <br />calc <br />10 <br />11.3 <br />B <br />mg/L <br />4 <br />20 <br />06/20/25 21:23 <br />bls <br />1 <br />1500 <br />umhos/cm <br />1 <br />10 <br />06/19/25 12:38 <br />asn cjk <br />10 <br />17.2 <br />mg/L <br />0.5 <br />2.5 <br />06/20/25 21:23 <br />bls <br />13 <br />mg/L <br />0.2 <br />5 <br />07/07/25 0:00 <br />calc <br />1 <br />06/23/2512:22 <br />rap <br />1 <br />8.7 <br />H <br />units <br />0.1 <br />0.1 <br />06/19/25 0:00 <br />asn cjk <br />1 <br />21.3 <br />C <br />0.1 <br />0.1 <br />06/19/25 0:00 <br />asn cjk <br />2 <br />800 <br />mg/L <br />40 <br />80 <br />06/16/2510:45 <br />cob <br />44 <br />07/07/25 0:00 <br />calc <br />10 <br /><9 <br />U <br />* mg/L <br />9 <br />20 <br />06/20/25 21:23 <br />bls <br />873 <br />mg/L <br />07/07/25 0:00 <br />calc <br />0.92 <br />07/07/25 0:00 <br />calc <br />Natural Soda LLC <br />Daub & Associates, Inc. Page 62 of 88 2025 2nd Quarter EPA Report <br />