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ACZ Laboratories, Inc. <br />2773 Downhill Drive Steamboat Springs, CO 80487 (800) 334-5493 <br />Natural Soda, LLC <br />Project ID: <br />Sample ID: WSW-2 <br />Inorganic Prep <br />ACZ Sample ID: <br />Date Sampled: <br />Date Received: <br />Sample Matrix: <br />L94529-03 <br />05105125 13:32 <br />05108125 <br />Groundwater <br />iParameter EPA r1lethod Dilution •: suit Qu t:Q Inns F1111L POL kate Ana►ys■ <br />Lab Filtration (0.45um) EPA 200.7/200.8/3005A Filter 05/13/25 15:10 smw <br />& Acidification <br />Nitrogen, total Kjeldahl EPA 351.2 05/21 /25 11:52 jqr <br />Phosphorus, total EPA 365.1 05/13/25 14:06 ptw <br />Metals Analysis <br />iParameter <br />aF_oelhrr. <br />Vr.�i`wun�le <br />�� r� <br />► i <br />Aluminum, dissolved <br />EPA 200.7 <br />5 <br /><0.35 <br />U <br />mg/L <br />0.35 <br />1.25 <br />05/19/25 11:32 <br />wtc <br />Arsenic, dissolved <br />EPA 200.8 <br />10 <br />0.00377 <br />B <br />mg/L <br />0.002 <br />0.01 <br />05/15/25 12:41 <br />gjl <br />Barium, dissolved <br />EPA 200.7 <br />5 <br />0.429 <br />* <br />mg/L <br />0.045 <br />0.175 <br />05/19/25 11:32 <br />wtc <br />Beryllium, dissolved <br />EPA 200.7 <br />5 <br /><0.05 <br />U <br />mg/L <br />0.05 <br />0.25 <br />05/19/25 11:32 <br />wtc <br />Boron, dissolved <br />EPA 200.7 <br />5 <br />4.32 <br />mg/L <br />0.15 <br />0.5 <br />05/19/25 19:14 <br />msp <br />Cadmium, dissolved <br />EPA 200.7 <br />5 <br /><0.04 <br />U <br />mg/L <br />0.04 <br />0.125 <br />05/19/25 19:14 <br />msp <br />Calcium, dissolved <br />EPA 200.7 <br />5 <br />2.06 <br />B <br />mg/L <br />0.5 <br />2.5 <br />05/19/25 19:14 <br />msp <br />Chromium, dissolved <br />EPA 200.7 <br />5 <br /><0.1 <br />U * <br />mg/L <br />0.1 <br />0.25 <br />05/19/25 11:32 <br />wtc <br />Copper, dissolved <br />EPA 200.7 <br />5 <br /><0.05 <br />U <br />mg/L <br />0.05 <br />0.25 <br />05/19/25 11:32 <br />wtc <br />Iron, dissolved <br />EPA 200.7 <br />5 <br />1.75 <br />* <br />mg/L <br />0.3 <br />0.75 <br />05/19/25 11:32 <br />wtc <br />Lead, dissolved <br />EPA 200.7 <br />5 <br /><0.15 <br />U <br />mg/L <br />0.15 <br />0.75 <br />05/19/25 11:32 <br />wtc <br />Lithium, dissolved <br />EPA 200.7 <br />5 <br />0.510 <br />mg/L <br />0.04 <br />0.2 <br />05/19/25 11:32 <br />wtc <br />Magnesium, dissolved <br />EPA 200.7 <br />5 <br />7.70 <br />mg/L <br />1 <br />5 <br />05/19/25 11:32 <br />wtc <br />Manganese, dissolved <br />EPA 200.7 <br />5 <br /><0.05 <br />U * <br />mg/L <br />0.05 <br />0.25 <br />05/19/25 11:32 <br />wtc <br />Mercury, dissolved <br />EPA 245.1 <br />1 <br /><0.0002 <br />U <br />mg/L <br />0.0002 <br />0.001 <br />05/18/25 14:59 <br />rjw <br />Molybdenum, dissolved EPA 200.7 <br />5 <br /><0.1 <br />U * <br />mg/L <br />0.1 <br />0.5 <br />05/19/25 11:32 <br />wtc <br />Nickel, dissolved <br />EPA 200.7 <br />5 <br /><0.04 <br />U <br />mg/L <br />0.04 <br />0.2 <br />05/19/25 11:32 <br />wtc <br />Potassium, dissolved <br />EPA 200.7 <br />5 <br />3.32 <br />B * <br />mg/L <br />2.5 <br />5 <br />05/19/25 11:32 <br />wtc <br />Selenium, dissolved <br />EPA 200.8 <br />10 <br /><0.001 <br />U <br />mg/L <br />0.001 <br />0.0025 <br />05/15/25 12:41 <br />gjl <br />Silica, dissolved <br />EPA 200.7 <br />5 <br />10 <br />* <br />mg/L <br />1 <br />5 <br />05/19/25 11:32 <br />wtc <br />Sodium, dissolved <br />EPA 200.7 <br />5 <br />3500 <br />mg/L <br />1 <br />5 <br />05/19/25 19:14 <br />msp <br />Strontium, dissolved <br />EPA 200.7 <br />5 <br />1.45 <br />* <br />mg/L <br />0.045 <br />0.225 <br />05/19/25 11:32 <br />wtc <br />Vanadium, dissolved <br />EPA 200.7 <br />5 <br /><0.05 <br />U <br />mg/L <br />0.05 <br />0.125 <br />05/19/25 11:32 <br />wtc <br />Zinc, dissolved <br />EPA 200.7 <br />5 <br /><0.1 <br />U <br />mg/L <br />0.1 <br />0.25 <br />05/19/25 19:14 <br />msp <br />Natural Soda LLC <br />Daub & Associates, Inc. Page 71 of 88 2025 2nd Quarter EPA Report <br />