{"query":{"parameter":"chromium total","place":"US-NC","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-NC","US"],"parameter_keys":["cas:7440-47-3","name:chromium total","name:chromium, total","name:chromium +3, total","name:chromium (+3)","name:chromium +6, total","name:chromium (+6)","cas:18540-29-9","cas:16065-83-1","name:total chromium","name:cromo totale","name:chrome total","name:chromium-51","name:chromium +6","name:chromium (vi) (freshwater) chromium (vi) marine","cas:92203-02-6"],"names_matched":[["chromium total","cas:7440-47-3"],["chromium total","name:chromium total"],["chromium total","name:chromium, total"],["chromium 3 total","name:chromium +3, total"],["chromium 3 total recoverable","name:chromium (+3)"],["chromium 6 total","name:chromium +6, total"],["chromium 6 total recoverable","name:chromium (+6)"],["chromium hexavalent total","cas:18540-29-9"],["chromium iii total","cas:16065-83-1"],["chromium iii total recoverable","cas:16065-83-1"],["chromium total hexavalent cr vi","cas:18540-29-9"],["chromium total trivalent cr iii","cas:16065-83-1"],["chromium vi total","cas:18540-29-9"],["chromium vi total recoverable","cas:18540-29-9"],["total chromium total recoverable","name:total chromium"],["chrom vi","cas:18540-29-9","chrom"],["cromo esavalente","cas:18540-29-9","cromo"],["cromo hexavalente","cas:18540-29-9","cromo"],["cromo total","name:total chromium","cromo"],["cromo totale","name:cromo totale","cromo"],["cromo trivalente","cas:16065-83-1","cromo"],["cromo vi","cas:18540-29-9","cromo"],["chrome composes de chrome hexavalent","cas:18540-29-9","chrome"],["chrome composes de chrome trivalent","cas:16065-83-1","chrome"],["chrome hexavalent et composes en cr 6","cas:18540-29-9","chrome"],["chrome iii cr iii","cas:16065-83-1","chrome"],["chrome total","name:chrome total","chrome"],["chrome total cr","name:chrome total","chrome"],["chrome vi cr vi","cas:18540-29-9","chrome"],["chromium 3","cas:16065-83-1","chromium"],["chromium 3","name:chromium (+3)","chromium"],["chromium 51","name:chromium-51","chromium"],["chromium 6","cas:18540-29-9","chromium"],["chromium 6","name:chromium (+6)","chromium"],["chromium 6","name:chromium +6","chromium"],["chromium compounds hexavalent","cas:18540-29-9","chromium"],["chromium hex","cas:18540-29-9","chromium"],["chromium hex dissolved","cas:18540-29-9","chromium"],["chromium hexavalent","cas:18540-29-9","chromium"],["chromium hexavalent cr vi","cas:18540-29-9","chromium"],["chromium hexavalent dissolved","cas:18540-29-9","chromium"],["chromium iii","cas:16065-83-1","chromium"],["chromium iii dissolved","cas:16065-83-1","chromium"],["chromium iii insoluble salts","cas:16065-83-1","chromium"],["chromium iii soluble compounds","cas:16065-83-1","chromium"],["chromium tri","cas:16065-83-1","chromium"],["chromium trivalent","cas:16065-83-1","chromium"],["chromium trivalent cr iii","cas:16065-83-1","chromium"],["chromium trivalent dissolved","cas:16065-83-1","chromium"],["chromium vi","cas:18540-29-9","chromium"],["chromium vi and compounds 1 12","cas:18540-29-9","chromium"],["chromium vi and compounds 1 13","cas:18540-29-9","chromium"],["chromium vi dissolved","cas:18540-29-9","chromium"],["chromium vi freshwater chromium vi marine","name:chromium (vi) (freshwater) chromium (vi) marine","chromium"],["hexavalent chromium","cas:18540-29-9","chromium"],["phosphoric acid reaction products with aluminum hydroxide and chromium oxide cro3","cas:92203-02-6","chromium"],["total chromium","name:total chromium","chromium"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":2702,"offset":0,"returned":50,"next_offset":50,"rows":[{"id":"a5229a409ea1a75b","parameter":"Chromium VI (dissolved)","value":"WER∙ 16 ug/l","value_num":16,"unit":"µg/L","statistic":"hourly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:18540-29-9","place":["US-NC"],"conditions":["receiving_water is freshwater","fresh surface waters, Class C: the minimum for all freshwaters (15A NCAC 02B .0211); other freshwater classes add standards (.0212-.0231)"],"cite":{"instrument":"us_nc_wqs","title":"15A NCAC 02B .0211, .0220 and .0208 — fresh (Class C) and tidal salt (Class SC) surface water quality standards, and human health standards for toxic substances (North Carolina)","issuer":"State of North Carolina, Environmental Management Commission (Department of Environmental Quality)","edition":".0211 readopted eff. November 1, 2019, amended eff. September 1, 2022; .0220 and .0208 as the Office of Administrative Hearings publishes them (fetched 2026-10-09)","source_url":"http://reports.oah.state.nc.us/ncac/title%2015a%20-%20environmental%20quality/chapter%2002%20-%20environmental%20management/subchapter%20b/15a%20ncac%2002b%20.0211.pdf","source_sha256":"71176dd337aaa95367f349105621e0b98c11cbe6b451ef41c03f054ff94352b8","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"15A NCAC 02B .0211(11)(c)","page":2,"quote":"(v) Chromium VI, dissolved, acute: WER∙ 16 ug/l"}},{"id":"ab7cd5d2c3845167","parameter":"Chromium VI (dissolved)","value":"WER∙ 11 ug/l","value_num":11,"unit":"µg/L","statistic":"four_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:18540-29-9","place":["US-NC"],"conditions":["receiving_water is freshwater","fresh surface waters, Class C: the minimum for all freshwaters (15A NCAC 02B .0211); other freshwater classes add standards (.0212-.0231)"],"cite":{"instrument":"us_nc_wqs","title":"15A NCAC 02B .0211, .0220 and .0208 — fresh (Class C) and tidal salt (Class SC) surface water quality standards, and human health standards for toxic substances (North Carolina)","issuer":"State of North Carolina, Environmental Management Commission (Department of Environmental Quality)","edition":".0211 readopted eff. November 1, 2019, amended eff. September 1, 2022; .0220 and .0208 as the Office of Administrative Hearings publishes them (fetched 2026-10-09)","source_url":"http://reports.oah.state.nc.us/ncac/title%2015a%20-%20environmental%20quality/chapter%2002%20-%20environmental%20management/subchapter%20b/15a%20ncac%2002b%20.0211.pdf","source_sha256":"71176dd337aaa95367f349105621e0b98c11cbe6b451ef41c03f054ff94352b8","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"15A NCAC 02B .0211(11)(c)","page":2,"quote":"(vi) Chromium VI, dissolved, chronic: WER∙ 11 ug/l"}},{"id":"7020f2617a3965b3","parameter":"Chromium VI (dissolved)","value":"WER∙ 1100 ug/l","value_num":1100,"unit":"µg/L","statistic":"hourly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:18540-29-9","place":["US-NC"],"conditions":["receiving_water is marine","tidal salt waters, Class SC: the minimum for all saltwaters (15A NCAC 02B .0220); SB and SA add standards (.0221, .0222)"],"cite":{"instrument":"us_nc_wqs","title":"15A NCAC 02B .0211, .0220 and .0208 — fresh (Class C) and tidal salt (Class SC) surface water quality standards, and human health standards for toxic substances (North Carolina)","issuer":"State of North Carolina, Environmental Management Commission (Department of Environmental Quality)","edition":".0211 readopted eff. November 1, 2019, amended eff. September 1, 2022; .0220 and .0208 as the Office of Administrative Hearings publishes them (fetched 2026-10-09)","source_url":"http://reports.oah.state.nc.us/ncac/title%2015a%20-%20environmental%20quality/chapter%2002%20-%20environmental%20management/subchapter%20b/15a%20ncac%2002b%20.0211.pdf","source_sha256":"71176dd337aaa95367f349105621e0b98c11cbe6b451ef41c03f054ff94352b8","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"15A NCAC 02B .0220(9)(c)","page":1,"quote":"(v) Chromium VI, acute: WER∙ 1100 ug/l"}},{"id":"c983f51329984a81","parameter":"Chromium VI (dissolved)","value":"WER∙ 50 ug/l","value_num":50,"unit":"µg/L","statistic":"four_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:18540-29-9","place":["US-NC"],"conditions":["receiving_water is marine","tidal salt waters, Class SC: the minimum for all saltwaters (15A NCAC 02B .0220); SB and SA add standards (.0221, .0222)"],"cite":{"instrument":"us_nc_wqs","title":"15A NCAC 02B .0211, .0220 and .0208 — fresh (Class C) and tidal salt (Class SC) surface water quality standards, and human health standards for toxic substances (North Carolina)","issuer":"State of North Carolina, Environmental Management Commission (Department of Environmental Quality)","edition":".0211 readopted eff. November 1, 2019, amended eff. September 1, 2022; .0220 and .0208 as the Office of Administrative Hearings publishes them (fetched 2026-10-09)","source_url":"http://reports.oah.state.nc.us/ncac/title%2015a%20-%20environmental%20quality/chapter%2002%20-%20environmental%20management/subchapter%20b/15a%20ncac%2002b%20.0211.pdf","source_sha256":"71176dd337aaa95367f349105621e0b98c11cbe6b451ef41c03f054ff94352b8","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"15A NCAC 02B .0220(9)(c)","page":1,"quote":"(vi) Chromium VI, chronic: WER∙ 50 ug/l"}},{"id":"fe546c18d7217b7a","parameter":"Chromium III (dissolved)","value":"180","value_num":180,"unit":"µg/L","statistic":"hourly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16065-83-1","place":["US-NC"],"conditions":["receiving_water is freshwater","fresh surface waters, Class C: the minimum for all freshwaters (15A NCAC 02B .0211); other freshwater classes add standards (.0212-.0231)","hardness 25 mg/l (Table A's illustrative value; other hardness takes the row's equation, capped at 400 mg/l)"],"cite":{"instrument":"us_nc_wqs","title":"15A NCAC 02B .0211, .0220 and .0208 — fresh (Class C) and tidal salt (Class SC) surface water quality standards, and human health standards for toxic substances (North Carolina)","issuer":"State of North Carolina, Environmental Management Commission (Department of Environmental Quality)","edition":".0211 readopted eff. November 1, 2019, amended eff. September 1, 2022; .0220 and .0208 as the Office of Administrative Hearings publishes them (fetched 2026-10-09)","source_url":"http://reports.oah.state.nc.us/ncac/title%2015a%20-%20environmental%20quality/chapter%2002%20-%20environmental%20management/subchapter%20b/15a%20ncac%2002b%20.0211.pdf","source_sha256":"71176dd337aaa95367f349105621e0b98c11cbe6b451ef41c03f054ff94352b8","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"15A NCAC 02B .0211(11)(e) Table A","page":3,"quote":null}},{"id":"c2ab17412cccfd6f","parameter":"Chromium III (dissolved)","value":"24","value_num":24,"unit":"µg/L","statistic":"four_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:16065-83-1","place":["US-NC"],"conditions":["receiving_water is freshwater","fresh surface waters, Class C: the minimum for all freshwaters (15A NCAC 02B .0211); other freshwater classes add standards (.0212-.0231)","hardness 25 mg/l (Table A's illustrative value; other hardness takes the row's equation, capped at 400 mg/l)"],"cite":{"instrument":"us_nc_wqs","title":"15A NCAC 02B .0211, .0220 and .0208 — fresh (Class C) and tidal salt (Class SC) surface water quality standards, and human health standards for toxic substances (North Carolina)","issuer":"State of North Carolina, Environmental Management Commission (Department of Environmental Quality)","edition":".0211 readopted eff. November 1, 2019, amended eff. September 1, 2022; .0220 and .0208 as the Office of Administrative Hearings publishes them (fetched 2026-10-09)","source_url":"http://reports.oah.state.nc.us/ncac/title%2015a%20-%20environmental%20quality/chapter%2002%20-%20environmental%20management/subchapter%20b/15a%20ncac%2002b%20.0211.pdf","source_sha256":"71176dd337aaa95367f349105621e0b98c11cbe6b451ef41c03f054ff94352b8","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"15A NCAC 02B .0211(11)(e) Table A","page":3,"quote":null}},{"id":"8fb1872a9885ace2","parameter":"Chromium","value":"5.0","value_num":5,"unit":"mg/L","direction":"max","kind":"threshold","medium":"leachate","level":"national","parameter_key":"cas:7440-47-3","place":["US"],"conditions":["(a) A solid waste (except manufactured gas plant waste) exhibits the characteristic of toxicity if, using the Toxicity Characteristic Leaching Procedure, test Method 1311 in “Test Methods for Evaluating Solid Waste, Physical/Chemical Methods,” EPA Publication SW-846, as incorporated by reference in § 260.11 of this chapter, the extract from a representative sample of the waste contains any of the contaminants listed in table 1 at the concentration equal to or greater than the respective value given in that table. Where the waste contains less than 0.5 percent filterable solids, the waste itself, after filtering using the methodology outlined in Method 1311, is considered to be the extract for the purpose of this section."],"cite":{"instrument":"us_40cfr261_24","title":"40 CFR 261.24 — Toxicity characteristic: Table 1, maximum concentration of contaminants for the toxicity characteristic (TCLP regulatory levels)","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"eCFR, 40 CFR 261.24 as of 2026-10-13 (title 40 up to date as of that day)","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-13/title-40.xml?part=261&section=261.24","source_sha256":"3a1ec9b0d3051c70e471e359275657b0fa6d98e80927d2217e82b2dbbca60961","fetched_at":"2026-10-15","section":"40 CFR 261.24, Table 1","page":null,"quote":"D007 Chromium 7440-47-3 5.0"}},{"id":"a2fa3493dcb86bd1","parameter":"Total chromium","value":"0.10","value_num":0.1,"unit":"Kg/kkg (or pounds per 1,000 lb) of wool","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-47-3","place":["US"],"conditions":["route is direct","cites is 40 CFR 410","the discharge is of the Subpart A—Wool Scouring Subcategory","existing sources (BPT)"],"cite":{"instrument":"us_40cfr410","title":"40 CFR Part 410 — PART 410—TEXTILE MILLS 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=410","source_sha256":"02c53988595c9f2911727f635f59f6a2af0c1d50ce06550c150a706321a505b3","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 410.12 (BPT)","page":null,"quote":"Total chromium 0.10 0.05"}},{"id":"36635e19cc6a833a","parameter":"Total chromium","value":"0.05","value_num":0.05,"unit":"Kg/kkg (or pounds per 1,000 lb) of wool","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-47-3","place":["US"],"conditions":["route is direct","cites is 40 CFR 410","the discharge is of the Subpart A—Wool Scouring Subcategory","existing sources (BPT)"],"cite":{"instrument":"us_40cfr410","title":"40 CFR Part 410 — PART 410—TEXTILE MILLS 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=410","source_sha256":"02c53988595c9f2911727f635f59f6a2af0c1d50ce06550c150a706321a505b3","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 410.12 (BPT)","page":null,"quote":"Total chromium 0.10 0.05"}},{"id":"19f355cc15cdb2b4","parameter":"Total chromium","value":"0.10","value_num":0.1,"unit":"Kg/kkg (or pounds per 1,000 lb) of wool","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-47-3","place":["US"],"conditions":["route is direct","cites is 40 CFR 410","the discharge is of the Subpart A—Wool Scouring Subcategory","existing sources (BAT)"],"cite":{"instrument":"us_40cfr410","title":"40 CFR Part 410 — PART 410—TEXTILE MILLS 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=410","source_sha256":"02c53988595c9f2911727f635f59f6a2af0c1d50ce06550c150a706321a505b3","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 410.13 (BAT)","page":null,"quote":"Total chromium 0.10 0.05"}},{"id":"561c76aeec589198","parameter":"Total chromium","value":"0.05","value_num":0.05,"unit":"Kg/kkg (or pounds per 1,000 lb) of wool","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-47-3","place":["US"],"conditions":["route is direct","cites is 40 CFR 410","the discharge is of the Subpart A—Wool Scouring Subcategory","existing sources (BAT)"],"cite":{"instrument":"us_40cfr410","title":"40 CFR Part 410 — PART 410—TEXTILE MILLS 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=410","source_sha256":"02c53988595c9f2911727f635f59f6a2af0c1d50ce06550c150a706321a505b3","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 410.13 (BAT)","page":null,"quote":"Total chromium 0.10 0.05"}},{"id":"5bfc61f2e78c8431","parameter":"Total chromium","value":"0.10","value_num":0.1,"unit":"Kg/kkg (or pounds per 1,000 lb) of wool","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-47-3","place":["US"],"conditions":["route is direct","cites is 40 CFR 410","the discharge is of the Subpart A—Wool Scouring Subcategory","new sources (NSPS)","Any new source subject to this subpart must achieve the following new source performance standards (NSPS):"],"cite":{"instrument":"us_40cfr410","title":"40 CFR Part 410 — PART 410—TEXTILE MILLS 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=410","source_sha256":"02c53988595c9f2911727f635f59f6a2af0c1d50ce06550c150a706321a505b3","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 410.15 (NSPS)","page":null,"quote":"Total chromium 0.10 0.05"}},{"id":"8dbd6e58fdbd9768","parameter":"Total chromium","value":"0.05","value_num":0.05,"unit":"Kg/kkg (or pounds per 1,000 lb) of wool","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-47-3","place":["US"],"conditions":["route is direct","cites is 40 CFR 410","the discharge is of the Subpart A—Wool Scouring Subcategory","new sources (NSPS)","Any new source subject to this subpart must achieve the following new source performance standards (NSPS):"],"cite":{"instrument":"us_40cfr410","title":"40 CFR Part 410 — PART 410—TEXTILE MILLS 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=410","source_sha256":"02c53988595c9f2911727f635f59f6a2af0c1d50ce06550c150a706321a505b3","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 410.15 (NSPS)","page":null,"quote":"Total chromium 0.10 0.05"}},{"id":"90fc4e006a1a04d2","parameter":"Total chromium","value":"0.14","value_num":0.14,"unit":"Kg/kkg (or pound per 1,000 lb) of fiber","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-47-3","place":["US"],"conditions":["route is direct","cites is 40 CFR 410","the discharge is of the Subpart B—Wool Finishing Subcategory","existing sources (BPT)"],"cite":{"instrument":"us_40cfr410","title":"40 CFR Part 410 — PART 410—TEXTILE MILLS 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=410","source_sha256":"02c53988595c9f2911727f635f59f6a2af0c1d50ce06550c150a706321a505b3","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 410.22 (BPT)","page":null,"quote":"Total chromium 0.14 0.07"}},{"id":"89265e0626282df3","parameter":"Total chromium","value":"0.07","value_num":0.07,"unit":"Kg/kkg (or pound per 1,000 lb) of fiber","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-47-3","place":["US"],"conditions":["route is direct","cites is 40 CFR 410","the discharge is of the Subpart B—Wool Finishing Subcategory","existing sources (BPT)"],"cite":{"instrument":"us_40cfr410","title":"40 CFR Part 410 — PART 410—TEXTILE MILLS 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=410","source_sha256":"02c53988595c9f2911727f635f59f6a2af0c1d50ce06550c150a706321a505b3","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 410.22 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