{"query":{"parameter":"antimony","place":"US-MN","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-MN","US"],"parameter_keys":["cas:7440-36-0","cas:1332-81-6","cas:1314-60-9","name:antimony, total","cas:1309-64-4"],"names_matched":[["antimony","cas:7440-36-0"],["antimony oxide sb2o4","cas:1332-81-6"],["antimony oxide sb2o5","cas:1314-60-9"],["antimony pentoxide","cas:1314-60-9"],["antimony tetroxide","cas:1332-81-6"],["antimony total","name:antimony, total"],["antimony trioxide","cas:1309-64-4"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order; rows for a marine receiving water after the rest, as none of the place's own rows names a marine, salt, estuarine, coastal or ocean water"},"total":393,"offset":0,"returned":50,"next_offset":50,"rows":[{"id":"860c32cafe4b3a1b","parameter":"Antimony, total","value":"5.5","value_num":5.5,"unit":"µg/L","statistic":"monthly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:antimony, total","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2A waters: coldwater aquatic life and habitats, also protected as a source of drinking water (Minn. R. 7050.0222 subp. 2; each water's class is listed in 7050.0470)"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 2","page":106,"quote":"Antimony, total​ μg/L​ 5.5​ HH​ 90​ 180​ Tox​"}},{"id":"4c6c6a8bc769dccc","parameter":"Antimony, total","value":"90","value_num":90,"unit":"µg/L","statistic":"daily_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:antimony, total","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2A waters: coldwater aquatic life and habitats, also protected as a source of drinking water (Minn. R. 7050.0222 subp. 2; each water's class is listed in 7050.0470)"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 2","page":106,"quote":"Antimony, total​ μg/L​ 5.5​ HH​ 90​ 180​ Tox​"}},{"id":"944ade9aad632df5","parameter":"Antimony, total","value":"180","value_num":180,"unit":"µg/L","statistic":"daily_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:antimony, total","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2A waters: coldwater aquatic life and habitats, also protected as a source of drinking water (Minn. R. 7050.0222 subp. 2; each water's class is listed in 7050.0470)"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 2","page":106,"quote":"Antimony, total​ μg/L​ 5.5​ HH​ 90​ 180​ Tox​"}},{"id":"433b65c64aa34570","parameter":"Antimony, total","value":"5.5","value_num":5.5,"unit":"µg/L","statistic":"monthly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:antimony, total","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2Bd waters: cool or warm water aquatic life and habitats, also protected as a source of drinking water (Minn. R. 7050.0222 subp. 3)"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 3","page":121,"quote":"Antimony, total​ μg/L​ 5.5​ HH​ 90​ 180​ Tox​"}},{"id":"7ab95b334a72c984","parameter":"Antimony, total","value":"90","value_num":90,"unit":"µg/L","statistic":"daily_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:antimony, total","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2Bd waters: cool or warm water aquatic life and habitats, also protected as a source of drinking water (Minn. R. 7050.0222 subp. 3)"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 3","page":121,"quote":"Antimony, total​ μg/L​ 5.5​ HH​ 90​ 180​ Tox​"}},{"id":"8b178d6b6323e2f4","parameter":"Antimony, total","value":"180","value_num":180,"unit":"µg/L","statistic":"daily_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:antimony, total","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2Bd waters: cool or warm water aquatic life and habitats, also protected as a source of drinking water (Minn. R. 7050.0222 subp. 3)"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 3","page":121,"quote":"Antimony, total​ μg/L​ 5.5​ HH​ 90​ 180​ Tox​"}},{"id":"35b44ff91453a872","parameter":"Antimony, total","value":"31","value_num":31,"unit":"µg/L","statistic":"four_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:antimony, total","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2B waters: cool or warm water aquatic life and habitats, not protected as a source of drinking water (Minn. R. 7050.0222 subp. 4); class 2D wetlands take these standards save dissolved oxygen, pH, temperature and chloride (subp. 6)"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 4","page":138,"quote":"Antimony, total​ μg/L​ 31​ Tox​ 90​ 180​ Tox​"}},{"id":"0a32005a1bc1cdb9","parameter":"Antimony, total","value":"90","value_num":90,"unit":"µg/L","statistic":"daily_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:antimony, total","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2B waters: cool or warm water aquatic life and habitats, not protected as a source of drinking water (Minn. R. 7050.0222 subp. 4); class 2D wetlands take these standards save dissolved oxygen, pH, temperature and chloride (subp. 6)"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 4","page":138,"quote":"Antimony, total​ μg/L​ 31​ Tox​ 90​ 180​ Tox​"}},{"id":"d1da4f6603020fb7","parameter":"Antimony, total","value":"180","value_num":180,"unit":"µg/L","statistic":"daily_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:antimony, total","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2B waters: cool or warm water aquatic life and habitats, not protected as a source of drinking water (Minn. R. 7050.0222 subp. 4); class 2D wetlands take these standards save dissolved oxygen, pH, temperature and chloride (subp. 6)"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 4","page":138,"quote":"Antimony, total​ μg/L​ 31​ Tox​ 90​ 180​ Tox​"}},{"id":"7add8daef8f889b6","parameter":"Antimony (T)","value":"0.0086","value_num":0.0086,"unit":"Kg/kkg (or pounds per/1,000 lb) of product","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-36-0","place":["US"],"conditions":["route is direct","cites is 40 CFR 415","the discharge is of the Subpart BN—Sodium Chlorate Production Subcategory","existing sources (BPT)","table: Subpart BN—Sodium Chlorate"],"cite":{"instrument":"us_40cfr415","title":"40 CFR Part 415 — PART 415—INORGANIC CHEMICALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 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Chlorate"],"cite":{"instrument":"us_40cfr415","title":"40 CFR Part 415 — PART 415—INORGANIC CHEMICALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-08-01","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-40.xml?part=415","source_sha256":"ebf67428a51e85f12785b92d537e6878c5f9838c87722ac2db82b3db673d1e23","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 415.663 (BAT)","page":null,"quote":"Antimony (T) 0.0043 0.0022"}},{"id":"6bff6df73c50deee","parameter":"Antimony (T)","value":"0.0043","value_num":0.0043,"unit":"Kg/kkg (or pounds per/1,000 lb) of product","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-36-0","place":["US"],"conditions":["route is direct","cites is 40 CFR 415","the discharge is of the Subpart BN—Sodium Chlorate Production 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(NSPS)","page":null,"quote":"Antimony (T) 0.0043 0.0022"}},{"id":"6c770df37bad51bf","parameter":"Antimony (T)","value":"1.6","value_num":1.6,"unit":"mg/L","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"sewer","parameter_key":"cas:7440-36-0","place":["US"],"conditions":["route is sewer","cites is 40 CFR 415","the discharge is of the Subpart BN—Sodium Chlorate Production Subcategory","new sources (PSNS)","table: Subpart BN—Sodium Chlorate"],"cite":{"instrument":"us_40cfr415","title":"40 CFR Part 415 — PART 415—INORGANIC CHEMICALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-08-01","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-40.xml?part=415","source_sha256":"ebf67428a51e85f12785b92d537e6878c5f9838c87722ac2db82b3db673d1e23","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 415.666 (PSNS)","page":null,"quote":"Antimony (T) 1.6 0.8"}},{"id":"5fb8a9dade015558","parameter":"Antimony (T)","value":"0.8","value_num":0.8,"unit":"mg/L","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"sewer","parameter_key":"cas:7440-36-0","place":["US"],"conditions":["route is sewer","cites is 40 CFR 415","the discharge is of the Subpart BN—Sodium Chlorate Production Subcategory","new sources (PSNS)","table: Subpart BN—Sodium Chlorate"],"cite":{"instrument":"us_40cfr415","title":"40 CFR Part 415 — PART 415—INORGANIC CHEMICALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-08-01","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-40.xml?part=415","source_sha256":"ebf67428a51e85f12785b92d537e6878c5f9838c87722ac2db82b3db673d1e23","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 415.666 (PSNS)","page":null,"quote":"Antimony (T) 1.6 0.8"}},{"id":"f9911a04c1d453ec","parameter":"Antimony","value":".263","value_num":0.263,"unit":"mg/kg (pounds per million pounds) of paste produced","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-36-0","place":["US"],"conditions":["route is direct","cites is 40 CFR 421","the discharge is of the Subpart B—Primary Aluminum Smelting Subcategory","existing sources (BAT)","(a) Subpart B—Anode and Cathode Paste Plant Wet Air Pollution Control","table: BAT Effluent Limitations"],"cite":{"instrument":"us_40cfr421","title":"40 CFR Part 421 — PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 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421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-10-05","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-05/title-40.xml?part=421","source_sha256":"d7cfd73b5bcf0e961e02ec53264492b2371277280003192841b7166b2a5012cf","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 421.23 (BAT)","page":null,"quote":"Antimony .263 .117"}},{"id":"63c1c5b54fcefc78","parameter":"Antimony","value":".403","value_num":0.403,"unit":"mg/kg (pounds per million pounds) of anodes cast","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-36-0","place":["US"],"conditions":["route is direct","cites is 40 CFR 421","the discharge is of the Subpart B—Primary Aluminum Smelting Subcategory","existing sources (BAT)","(b) Subpart (B)—Anode Contact Cooling and Briquette 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3.719"}},{"id":"3ff96851c03695ae","parameter":"Antimony","value":"3.719","value_num":3.719,"unit":"mg/kg (pounds per million pounds) of anodes baked","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-36-0","place":["US"],"conditions":["route is direct","cites is 40 CFR 421","the discharge is of the Subpart B—Primary Aluminum Smelting Subcategory","existing sources (BAT)","(c) Subpart (B)—Anode Bake Plant Wet Air Pollution Control (Closed Top Ring Furnace).","table: BAT Effluent Limitations"],"cite":{"instrument":"us_40cfr421","title":"40 CFR Part 421 — PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 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CFR Part 421 — PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-10-05","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-05/title-40.xml?part=421","source_sha256":"d7cfd73b5bcf0e961e02ec53264492b2371277280003192841b7166b2a5012cf","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 421.23 (BAT)","page":null,"quote":"Antimony .097 .043"}},{"id":"9020dce67fcefda6","parameter":"Antimony","value":".043","value_num":0.043,"unit":"mg/kg (pounds per million pounds) of anodes baked","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-36-0","place":["US"],"conditions":["route is direct","cites is 40 CFR 421","the discharge is of the Subpart B—Primary Aluminum Smelting Subcategory","existing sources (BAT)","(d) Subpart B—Anode Bake Plant Wet Air 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CFR 421","the discharge is of the Subpart B—Primary Aluminum Smelting Subcategory","existing sources (BAT)","(e) Subpart B—Anode Bake Plant Wet Air Pollution Control (Open Top Ring Furnace With Wet Electrostatic Precipitator and Spray Tower).","table: BAT Effluent Limitations"],"cite":{"instrument":"us_40cfr421","title":"40 CFR Part 421 — PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-10-05","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-05/title-40.xml?part=421","source_sha256":"d7cfd73b5bcf0e961e02ec53264492b2371277280003192841b7166b2a5012cf","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 421.23 (BAT)","page":null,"quote":"Antimony 1.409 .628"}},{"id":"8fb82b413d0dd03a","parameter":"Antimony","value":".628","value_num":0.628,"unit":"mg/kg (pounds per million pounds) of anodes 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(BAT)","page":null,"quote":"Antimony 1.409 .628"}},{"id":"4a83ccb0c0742da1","parameter":"Antimony","value":"2.197","value_num":2.197,"unit":"mg/kg (pounds per million pounds) of anodes baked","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-36-0","place":["US"],"conditions":["route is direct","cites is 40 CFR 421","the discharge is of the Subpart B—Primary Aluminum Smelting Subcategory","existing sources (BAT)","(f) Subpart B—Anode Bake Plant Wet Air Pollution Control (Tunnel Kiln).","table: BAT Effluent Limitations"],"cite":{"instrument":"us_40cfr421","title":"40 CFR Part 421 — PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 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421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-10-05","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-05/title-40.xml?part=421","source_sha256":"d7cfd73b5bcf0e961e02ec53264492b2371277280003192841b7166b2a5012cf","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 421.23 (BAT)","page":null,"quote":"Antimony 2.197 .979"}},{"id":"b1bbefbae593f5e9","parameter":"Antimony","value":"420.400","value_num":420.4,"unit":"mg/kg (pounds per million pounds) of cryolite recovered","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-36-0","place":["US"],"conditions":["route is direct","cites is 40 CFR 421","the discharge is of the Subpart B—Primary Aluminum Smelting Subcategory","existing sources (BAT)","(g) Subpart B—Cathode Reprocessing (Operated With 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(BAT)","page":null,"quote":"Antimony 420.400 189.200"}},{"id":"cb2ec0d7ae2c3c49","parameter":"Antimony","value":"67.610","value_num":67.61,"unit":"mg/kg (pounds per million pounds) of cryolite recovered","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-36-0","place":["US"],"conditions":["route is direct","cites is 40 CFR 421","the discharge is of the Subpart B—Primary Aluminum Smelting Subcategory","existing sources (BAT)","(h) Subpart B—Cathode Reprocessing (Operated With Dry Potline Scrubbing and Commingled With Other Process or Nonprocess Waters).","table: BAT Effluent Limitations"],"cite":{"instrument":"us_40cfr421","title":"40 CFR Part 421 — PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 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Effluent Limitations"],"cite":{"instrument":"us_40cfr421","title":"40 CFR Part 421 — PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-10-05","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-05/title-40.xml?part=421","source_sha256":"d7cfd73b5bcf0e961e02ec53264492b2371277280003192841b7166b2a5012cf","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 421.23 (BAT)","page":null,"quote":"Antimony 1.618 .721"}},{"id":"70d6d8452814b5b6","parameter":"Antimony","value":"3.204","value_num":3.204,"unit":"mg/kg (pound per million pounds) of aluminum produced from electrolytic reduction","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-36-0","place":["US"],"conditions":["route is direct","cites is 40 CFR 421","the discharge is of the Subpart 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