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ACZ Laboratories, Inc. <br />2773 Downhill Drive Steamboat Springs, CO 80487 (800) 334-5493 <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 />Inorganic Prep <br />• aiethod <br />Lab Filtration (0.45um) EPA 200.7/200.8/3005A Filter * 06/24/25 14:00 aeh <br />& Acidification <br />Nitrogen, total Kjeldahl EPA 351.2 * 06/19/25 13:30 erh <br />Phosphorus, total EPA 365.1 06/18/25 10:44 erh <br />Metals Analysis <br />1 -ara iSi7 er <br />F-PA\ 4GSiTT <br />Aluminum, dissolved <br />EPA 200.7 <br />100 <br /><7 <br />U <br />* <br />mg/L <br />7 <br />25 <br />06/27/25 0:00 <br />msp <br />Arsenic, dissolved <br />EPA 200.8 <br />100 <br /><0.02 <br />U <br />mg/L <br />0.02 <br />0.1 <br />06/26/25 16:18 <br />gjl <br />Barium, dissolved <br />EPA 200.7 <br />100 <br />1.84 <br />B <br />* <br />mg/L <br />0.9 <br />3.5 <br />06/27/25 0:00 <br />msp <br />Beryllium, dissolved <br />EPA 200.7 <br />100 <br /><1 <br />U <br />mg/L <br />1 <br />5 <br />06/27/25 0:00 <br />msp <br />Boron, dissolved <br />EPA 200.7 <br />100 <br />138 <br />mg/L <br />3 <br />10 <br />06/27/25 0:00 <br />msp <br />Cadmium, dissolved <br />EPA 200.7 <br />100 <br /><0.8 <br />U <br />mg/L <br />0.8 <br />2.5 <br />06/27/25 0:00 <br />msp <br />Calcium, dissolved <br />EPA 200.7 <br />100 <br />10.7 <br />B <br />mg/L <br />10 <br />50 <br />06/27/25 0:00 <br />msp <br />Chromium, dissolved <br />EPA 200.7 <br />100 <br /><2 <br />U <br />mg/L <br />2 <br />5 <br />06/27/25 0:00 <br />msp <br />Copper, dissolved <br />EPA 200.7 <br />100 <br /><1 <br />U <br />* <br />mg/L <br />1 <br />5 <br />06/27/25 0:00 <br />msp <br />Iron, dissolved <br />EPA 200.7 <br />100 <br /><6 <br />U <br />mg/L <br />6 <br />15 <br />06/27/25 0:00 <br />msp <br />Lead, dissolved <br />EPA 200.7 <br />100 <br /><3 <br />U <br />mg/L <br />3 <br />15 <br />06/27/25 0:00 <br />msp <br />Lithium, dissolved <br />EPA 200.7 <br />100 <br />3.10 <br />B <br />mg/L <br />0.8 <br />4 <br />06/27/25 0:00 <br />msp <br />Magnesium, dissolved <br />EPA 200.7 <br />100 <br /><20 <br />U <br />mg/L <br />20 <br />100 <br />06/27/25 0:00 <br />msp <br />Manganese, dissolved <br />EPA 200.7 <br />100 <br /><1 <br />U <br />mg/L <br />1 <br />5 <br />06/27/25 0:00 <br />msp <br />Mercury, dissolved <br />EPA 245.1 <br />20 <br /><0.004 <br />U <br />* <br />mg/L <br />0.004 <br />0.02 <br />07/02/25 13:10 <br />rjw <br />Molybdenum, dissolved EPA 200.7 <br />100 <br /><2 <br />U <br />mg/L <br />2 <br />10 <br />06/27/25 0:00 <br />msp <br />Nickel, dissolved <br />EPA 200.7 <br />100 <br /><0.8 <br />U <br />mg/L <br />0.8 <br />4 <br />06/27/25 0:00 <br />msp <br />Potassium, dissolved <br />EPA 200.7 <br />100 <br />269 <br />* <br />mg/L <br />50 <br />100 <br />06/27/25 0:00 <br />msp <br />Selenium, dissolved <br />EPA 200.8 <br />100 <br /><0.01 <br />U <br />mg/L <br />0.01 <br />0.025 <br />06/26/25 16:18 <br />gjl <br />Silica, dissolved <br />EPA 200.7 <br />100 <br />210 <br />mg/L <br />20 <br />100 <br />06/27/25 0:00 <br />msp <br />Sodium, dissolved <br />EPA 200.7 <br />100 <br />46100 <br />* <br />mg/L <br />20 <br />100 <br />06/27/25 0:00 <br />msp <br />Strontium, dissolved <br />EPA 200.7 <br />100 <br /><0.9 <br />U <br />mg/L <br />0.9 <br />4.5 <br />06/27/25 0:00 <br />msp <br />Vanadium, dissolved <br />EPA 200.7 <br />100 <br /><1 <br />U <br />mg/L <br />1 <br />2.5 <br />06/27/25 0:00 <br />msp <br />Zinc, dissolved <br />EPA 200.7 <br />100 <br /><2 <br />U <br />* <br />mg/L <br />2 <br />5 <br />06/27/25 0:00 <br />msp <br />Natural Soda LLC <br />Daub & Associates, Inc. Page 77 of 88 2025 2nd Quarter EPA Report <br />