{"query":{"parameter":"selenium","place":"US-NE","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-NE","US"],"parameter_keys":["cas:7782-49-2","name:selenium-75","name:selenium, dissolved","name:selenium, fish egg or ovary tissue","name:selenium, fish muscle tissue","name:selenium, fish whole body tissue","cas:7446-34-6","name:selenium, total","name:selenium - total alert concentration","name:selenium - total guideline","name:selenium v","name:total selenium","name:total selenium [freshwater – for flowing (lotic) waters]","name:total selenium [freshwater – for still/standing (lentic) waters]"],"names_matched":[["selenium","cas:7782-49-2"],["selenium 75","name:selenium-75"],["selenium dissolved","name:selenium, dissolved"],["selenium fish egg or ovary tissue","name:selenium, fish egg or ovary tissue"],["selenium fish muscle tissue","name:selenium, fish muscle tissue"],["selenium fish whole body tissue","name:selenium, fish whole body tissue"],["selenium monosulfide","cas:7446-34-6"],["selenium sulfide","cas:7446-34-6"],["selenium total","name:selenium, total"],["selenium total alert concentration","name:selenium - total alert concentration"],["selenium total guideline","name:selenium - total guideline"],["selenium v","name:selenium v"],["total selenium","name:total selenium"],["total selenium freshwater for flowing lotic waters","name:total selenium [freshwater – for flowing (lotic) waters]"],["total selenium freshwater for still standing lentic waters","name:total selenium [freshwater – for still/standing (lentic) waters]"],["total selenium marine","name:total selenium"]],"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":102,"offset":0,"returned":50,"next_offset":50,"rows":[{"id":"a280ac1797dc8120","parameter":"Selenium (dissolved)","value":"1.5 μg/L in lakes and reservoirs","value_num":1.5,"unit":"µg/L","statistic":"thirty_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7782-49-2","place":["US-NE"],"conditions":["receiving_water is freshwater","all aquatic life use classes (coldwater and warmwater, class A and B; a water's uses: Chapters 5 and 6)","lakes and reservoirs","in the absence of steady-state fish tissue data (fish tissue elements supersede the water column)"],"cite":{"instrument":"us_ne_wqs","title":"Nebraska Title 117, Surface Water Quality Standards, Chapter 4: aquatic life (general, toxic substances, coldwater and warmwater classes), lake nutrients, public drinking water and agricultural criteria","issuer":"State of Nebraska, Environmental Quality Council (Department of Environment and Energy)","edition":"Neb. Admin. Code Title 117, effective August 2, 2023 (Chapter 4 pages dated June 24, 2019), as US EPA posts it in effect for CWA purposes (cover September 5, 2023: the chronic mercury criterion in effect is 0.051 µg/L, EPA having deferred action on 0.77 µg/L; 003.05's chlorophyll a sentence disapproved; 004.01B's background sentence not approved; selenium and cadmium remain subject to ESA consultation)","source_url":"https://www.epa.gov/system/files/documents/2023-09/newqs-title117.pdf","source_sha256":"647f1d39531b7b2024e90f45cf69b0da17856324172e984c1e3da9bb6adb3036","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Neb. Admin. Code Title 117 Chapter 4, 003.01C3","page":35,"quote":"1.5 μg/L in lakes"}},{"id":"02ea78f608eb7588","parameter":"Selenium (dissolved)","value":"3.1 μg/L in streams and rivers","value_num":3.1,"unit":"µg/L","statistic":"thirty_day_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7782-49-2","place":["US-NE"],"conditions":["receiving_water is freshwater","all aquatic life use classes (coldwater and warmwater, class A and B; a water's uses: Chapters 5 and 6)","streams and rivers","in the absence of steady-state fish tissue data (fish tissue elements supersede the water column)"],"cite":{"instrument":"us_ne_wqs","title":"Nebraska Title 117, Surface Water Quality Standards, Chapter 4: aquatic life (general, toxic substances, coldwater and warmwater classes), lake nutrients, public drinking water and agricultural criteria","issuer":"State of Nebraska, Environmental Quality Council (Department of Environment and Energy)","edition":"Neb. Admin. Code Title 117, effective August 2, 2023 (Chapter 4 pages dated June 24, 2019), as US EPA posts it in effect for CWA purposes (cover September 5, 2023: the chronic mercury criterion in effect is 0.051 µg/L, EPA having deferred action on 0.77 µg/L; 003.05's chlorophyll a sentence disapproved; 004.01B's background sentence not approved; selenium and cadmium remain subject to ESA consultation)","source_url":"https://www.epa.gov/system/files/documents/2023-09/newqs-title117.pdf","source_sha256":"647f1d39531b7b2024e90f45cf69b0da17856324172e984c1e3da9bb6adb3036","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Neb. Admin. Code Title 117 Chapter 4, 003.01C3","page":35,"quote":"3.1 μg/L in"}},{"id":"5b885e4c777fe5af","parameter":"Selenium","value":"0.05 mg/L","value_num":0.05,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7782-49-2","place":["US-NE"],"conditions":["receiving_water is freshwater","surface waters which serve as a public drinking water supply (004.01; Chapters 5 and 6)"],"cite":{"instrument":"us_ne_wqs","title":"Nebraska Title 117, Surface Water Quality Standards, Chapter 4: aquatic life (general, toxic substances, coldwater and warmwater classes), lake nutrients, public drinking water and agricultural criteria","issuer":"State of Nebraska, Environmental Quality Council (Department of Environment and Energy)","edition":"Neb. Admin. Code Title 117, effective August 2, 2023 (Chapter 4 pages dated June 24, 2019), as US EPA posts it in effect for CWA purposes (cover September 5, 2023: the chronic mercury criterion in effect is 0.051 µg/L, EPA having deferred action on 0.77 µg/L; 003.05's chlorophyll a sentence disapproved; 004.01B's background sentence not approved; selenium and cadmium remain subject to ESA consultation)","source_url":"https://www.epa.gov/system/files/documents/2023-09/newqs-title117.pdf","source_sha256":"647f1d39531b7b2024e90f45cf69b0da17856324172e984c1e3da9bb6adb3036","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Neb. Admin. Code Title 117 Chapter 4, 004.01B","page":61,"quote":"Selenium c 0.05 mg/L 7782-49-2"}},{"id":"6b065b3e89356f7c","parameter":"Selenium","value":"0.02 mg/L","value_num":0.02,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7782-49-2","place":["US-NE"],"conditions":["receiving_water is freshwater","waters assigned the class A agricultural use (general agricultural purposes, e.g. irrigation and livestock watering without treatment; Chapters 5 and 6)"],"cite":{"instrument":"us_ne_wqs","title":"Nebraska Title 117, Surface Water Quality Standards, Chapter 4: aquatic life (general, toxic substances, coldwater and warmwater classes), lake nutrients, public drinking water and agricultural criteria","issuer":"State of Nebraska, Environmental Quality Council (Department of Environment and Energy)","edition":"Neb. Admin. Code Title 117, effective August 2, 2023 (Chapter 4 pages dated June 24, 2019), as US EPA posts it in effect for CWA purposes (cover September 5, 2023: the chronic mercury criterion in effect is 0.051 µg/L, EPA having deferred action on 0.77 µg/L; 003.05's chlorophyll a sentence disapproved; 004.01B's background sentence not approved; selenium and cadmium remain subject to ESA consultation)","source_url":"https://www.epa.gov/system/files/documents/2023-09/newqs-title117.pdf","source_sha256":"647f1d39531b7b2024e90f45cf69b0da17856324172e984c1e3da9bb6adb3036","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Neb. Admin. Code Title 117 Chapter 4, 004.02B3","page":66,"quote":"004.02B3 Selenium. Not to exceed 0.02 mg/L."}},{"id":"4ce7c3a5c7c206db","parameter":"Selenium","value":"1.0","value_num":1,"unit":"mg/L","direction":"max","kind":"threshold","medium":"leachate","level":"national","parameter_key":"cas:7782-49-2","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":"D010 Selenium 7782-49-2 1.0"}},{"id":"a776047018b35dd0","parameter":"Selenium","value":"0.82","value_num":0.82,"unit":"mg/L","statistic":"composite","direction":"max","kind":"limit","medium":"product","level":"national","parameter_key":"cas:7782-49-2","place":["US"],"conditions":["(a) Table UTS identifies the hazardous constituents, along with the nonwastewater and wastewater treatment standard levels, that are used to regulate most prohibited hazardous wastes with numerical limits. For determining compliance with treatment standards for underlying hazardous constituents as defined in § 268.2(i), these treatment standards may not be exceeded. Compliance with these treatment standards is measured by an analysis of grab samples, unless otherwise noted in the following Table UTS."],"cite":{"instrument":"us_40cfr268_48","title":"40 CFR 268.48 — Universal treatment standards: Table UTS, wastewater and nonwastewater treatment standards for the hazardous constituents of land-disposal-restricted wastes","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"eCFR, 40 CFR 268.48 as of 2026-10-13 (title 40 up to date as of that day; source note: 59 FR 48103, Sept. 19, 1994, as last amended at 76 FR 34156, June 13, 2011)","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-13/title-40.xml?part=268&section=268.48","source_sha256":"70b2e58a6b1e228e2c204acc69b69fab0d5a0347e35d569959073c3dc3ee4adb","fetched_at":"2026-10-15","section":"40 CFR 268.48, Table UTS, Inorganic Constituents, wastewater standard","page":null,"quote":"Selenium 7 7782-49-2 0.82 5.7 mg/l TCLP"}},{"id":"094732a9ac944067","parameter":"Selenium","value":"5.7 mg/l TCLP","value_num":5.7,"unit":"mg/L TCLP","statistic":"instant","direction":"max","kind":"limit","medium":"leachate","level":"national","parameter_key":"cas:7782-49-2","place":["US"],"conditions":["(a) Table UTS identifies the hazardous constituents, along with the nonwastewater and wastewater treatment standard levels, that are used to regulate most prohibited hazardous wastes with numerical limits. For determining compliance with treatment standards for underlying hazardous constituents as defined in § 268.2(i), these treatment standards may not be exceeded. Compliance with these treatment standards is measured by an analysis of grab samples, unless otherwise noted in the following Table UTS."],"cite":{"instrument":"us_40cfr268_48","title":"40 CFR 268.48 — Universal treatment standards: Table UTS, wastewater and nonwastewater treatment standards for the hazardous constituents of land-disposal-restricted wastes","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"eCFR, 40 CFR 268.48 as of 2026-10-13 (title 40 up to date as of that day; source note: 59 FR 48103, Sept. 19, 1994, as last amended at 76 FR 34156, June 13, 2011)","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-13/title-40.xml?part=268&section=268.48","source_sha256":"70b2e58a6b1e228e2c204acc69b69fab0d5a0347e35d569959073c3dc3ee4adb","fetched_at":"2026-10-15","section":"40 CFR 268.48, Table UTS, Inorganic Constituents, nonwastewater standard","page":null,"quote":"Selenium 7 7782-49-2 0.82 5.7 mg/l TCLP"}},{"id":"cb845ee83a2ef2cf","parameter":"Selenium (T)","value":"0.0015","value_num":0.0015,"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:7782-49-2","place":["US"],"conditions":["route is direct","cites is 40 CFR 415","the discharge is of the Subpart AJ—Copper Salts Production Subcategory","existing sources (BPT)","table: Subpart AJ—Copper Sulfate, Copper Chloride, Copper Iodide, Copper Nitrate"],"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 415.362 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