{"query":{"parameter":"cobalt","place":"US-AK","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-AK","US"],"parameter_keys":["cas:7440-48-4","name:cobalt-57","name:cobalt-58","name:cobalt-60","name:cobalt - total","name:cobalt, total"],"names_matched":[["cobalt","cas:7440-48-4"],["cobalt 57","name:cobalt-57"],["cobalt 58","name:cobalt-58"],["cobalt 60","name:cobalt-60"],["cobalt total","name:cobalt - total"],["cobalt total","name:cobalt, total"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":283,"offset":0,"returned":50,"next_offset":50,"rows":[{"id":"22b7bc020dde8d9c","parameter":"Cobalt","value":"50","value_num":50,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-48-4","place":["US-AK"],"conditions":["fresh water designated for water supply: agriculture, irrigation (18 AAC 70.020(b))"],"cite":{"instrument":"us_ak_wqs","title":"Alaska Water Quality Criteria Manual for Toxic and Other Deleterious Organic and Inorganic Substances (fresh and marine aquatic life, human health, water supply), with 18 AAC 70.020(b) dissolved inorganic substances and marine salinity","issuer":"State of Alaska, Department of Environmental Conservation","edition":"Toxics Manual as amended through September 8, 2022, adopted by reference in 18 AAC 70, as US EPA posts it in effect for CWA purposes (effective April 14, 2023; cover April 24, 2023); 18 AAC 70 as EPA posts it effective January 8, 2026 (rows from it name their own source)","source_url":"https://www.epa.gov/system/files/documents/2023-05/akwqs-toxics-manual.pdf","source_sha256":"c835973dac59a2b48a376b34d11333eba7ff7a0f024cee0864e42470a2283b37","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"Alaska Toxics Manual (2022), Table of criteria","page":13,"quote":null}},{"id":"faf1f205f8222715","parameter":"Cobalt (T)","value":"0.0003","value_num":0.0003,"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:7440-48-4","place":["US"],"conditions":["route is direct","cites is 40 CFR 415","the discharge is of the Subpart BM—Cobalt Salts Production Subcategory","existing sources (BPT)","table: Subpart BM—Cobalt Salts"],"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":"not 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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":"not verified"},"section":"40 CFR 415.654 (PSES)","page":null,"quote":"Cobalt (T) 3.6 1.4"}},{"id":"6356eff347748475","parameter":"Cobalt (T)","value":"1.4","value_num":1.4,"unit":"mg/L","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"sewer","parameter_key":"cas:7440-48-4","place":["US"],"conditions":["route is sewer","cites is 40 CFR 415","the discharge is of the Subpart BM—Cobalt Salts Production Subcategory","existing sources (PSES)","table: Subpart BM—Cobalt Salts"],"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 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Subcategory"],"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":"not verified"},"section":"40 CFR 421.232 (BPT)","page":null,"quote":"Cobalt 0.016 0.007"}},{"id":"5a5af2bf779b393c","parameter":"Cobalt","value":"0.007","value_num":0.007,"unit":"mg/kg (pounds per million pounds) of copper, nickel, and cobalt in the crushed raw material","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-48-4","place":["US"],"conditions":["route is direct","cites is 40 CFR 421","the discharge is of the Subpart U—Primary Nickel and Cobalt Subcategory","existing sources (BPT)","(a) Raw Material dust control.","table: BPT Limitations for the Primary Nickel and Cobalt Subcategory"],"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":"not verified"},"section":"40 CFR 421.232 (BPT)","page":null,"quote":"Cobalt 0.016 0.007"}},{"id":"5a6172dc49e0e244","parameter":"Cobalt","value":"0.007","value_num":0.007,"unit":"mg/kg (pounds per million pounds) of nickel powder 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0.003"}},{"id":"8a93e41fbf279e09","parameter":"Cobalt","value":"0.003","value_num":0.003,"unit":"mg/kg (pounds per million pounds) of nickel powder washed","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-48-4","place":["US"],"conditions":["route is direct","cites is 40 CFR 421","the discharge is of the Subpart U—Primary Nickel and Cobalt Subcategory","existing sources (BPT)","(b) Nickel wash water.","table: BPT Limitations for the Primary Nickel and Cobalt Subcategory"],"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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Primary Nickel and Cobalt Subcategory"],"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":"not verified"},"section":"40 CFR 421.232 (BPT)","page":null,"quote":"Cobalt 2.666 1.143"}},{"id":"29c95c68b9c564c6","parameter":"Cobalt","value":"4.494","value_num":4.494,"unit":"mg/kg (pounds per million pounds) of cobalt produced","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-48-4","place":["US"],"conditions":["route is direct","cites is 40 CFR 421","the discharge is of the Subpart U—Primary Nickel and Cobalt Subcategory","existing sources (BPT)","(d) Cobalt reduction decant.","table: BPT Limitations for the Primary Nickel and Cobalt Subcategory"],"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":"not verified"},"section":"40 CFR 421.232 (BPT)","page":null,"quote":"Cobalt 4.494 1.926"}},{"id":"2b260ee37b30325e","parameter":"Cobalt","value":"1.926","value_num":1.926,"unit":"mg/kg (pounds per million pounds) of cobalt 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1.926"}},{"id":"28fc2af4e896fa9a","parameter":"Cobalt","value":"0.011","value_num":0.011,"unit":"mg/kg (pounds per million pounds) of copper, nickel, and cobalt in the crushed raw material","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-48-4","place":["US"],"conditions":["route is direct","cites is 40 CFR 421","the discharge is of the Subpart U—Primary Nickel and Cobalt Subcategory","existing sources (BAT)","(a) Raw material dust control.","table: BAT Limitations for the Primary Nickel and Cobalt Subcategory"],"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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0.002"}},{"id":"edecc42303948881","parameter":"Cobalt","value":"1.777","value_num":1.777,"unit":"mg/kg (pounds per million pounds) of nickel produced","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-48-4","place":["US"],"conditions":["route is direct","cites is 40 CFR 421","the discharge is of the Subpart U—Primary Nickel and Cobalt Subcategory","existing sources (BAT)","(c) Nickel reduction decant.","table: BAT Limitations for the Primary Nickel and Cobalt Subcategory"],"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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BPT Limitations for the Secondary Tungsten and Cobalt Subcategory"],"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":"not verified"},"section":"40 CFR 421.312 (BPT)","page":null,"quote":"Cobalt 10.130 4.448"}},{"id":"5ec41187f092282e","parameter":"Cobalt","value":"4.448","value_num":4.448,"unit":"mg/kg (pounds per million pounds) of tungsten produced","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-48-4","place":["US"],"conditions":["route is direct","cites is 40 CFR 421","the discharge is of the Subpart AC—Secondary Tungsten and Cobalt Subcategory","existing sources (BPT)","(b) Tungsten leaching acid.","table: BPT Limitations for the Secondary Tungsten and Cobalt Subcategory"],"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":"not verified"},"section":"40 CFR 421.312 (BPT)","page":null,"quote":"Cobalt 10.130 4.448"}},{"id":"1740aff9ed868a9f","parameter":"Cobalt","value":"20.263","value_num":20.263,"unit":"mg/kg (pounds per million pounds) of tungsten 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scheelite filtrate.","table: BPT Limitations for the Secondary Tungsten and Cobalt Subcategory"],"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":"not verified"},"section":"40 CFR 421.312 (BPT)","page":null,"quote":"Cobalt 65.644 28.824"}},{"id":"1fea939d98b0a5e9","parameter":"Cobalt","value":"6.899","value_num":6.899,"unit":"mg/kg (pounds per million pounds) of tungsten carbide scrap leached","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-48-4","place":["US"],"conditions":["route is 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