{"query":{"parameter":"nitrate nitrite as n","place":"US-ND","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-ND","US"],"parameter_keys":["name:nitrate + nitrite","name:nitrate + nitrite as n","name:nitrate+nitrite","name:nitrate/nitrite","name:nitrate/nitrite as n","name:nitrate and nitrite","name:nitrate plus nitrite"],"names_matched":[["nitrate nitrite as n","name:nitrate + nitrite"],["nitrate nitrite as n","name:nitrate + nitrite as n"],["nitrate nitrite as n","name:nitrate+nitrite"],["nitrate nitrite as n","name:nitrate/nitrite"],["nitrate nitrite as n","name:nitrate/nitrite as n"],["nitrate and nitrite as n","name:nitrate and nitrite"],["nitrate plus nitrite as nitrogen n","name:nitrate plus nitrite"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":7,"offset":0,"returned":7,"next_offset":null,"rows":[{"id":"3474d3317146f79c","parameter":"Nitrate + nitrite as N","value":"10 mg/l","value_num":10,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:nitrate + nitrite as n","place":["US-ND"],"conditions":["receiving_water is freshwater","waters used as a municipal or domestic drinking water supply"],"cite":{"instrument":"us_nd_wqs","title":"North Dakota Standards of Quality for Waters of the State (N.D. Admin. Code ch. 33.1-16-02.1): Table 1 maximum limits by stream class and Table 2 water quality criteria","issuer":"State of North Dakota, Department of Environmental Quality","edition":"N.D. Admin. Code ch. 33.1-16-02.1, effective January 1, 2019, amended January 1, 2024, as US EPA posts it in effect for CWA purposes (EPA approved the 2024 amendments March 4, 2024; the chronic mercury criterion 0.012 µg/L stays in effect after EPA's July 15, 2022 disapproval of 0.88 µg/L)","source_url":"https://www.epa.gov/sites/default/files/2015-09/documents/ndwqs.pdf","source_sha256":"c16e38155ad97d62102ffd2e2f78f595a0a6304d3ef6fd214f449cce4819a4b4","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"N.D. Admin. Code 33.1-16-02.1-09 Table 1","page":13,"quote":"However, in no case shall the concentration for nitrate plus nitrite N exceed 10 mg/l for any waters used as a municipal or domestic drinking water supply."}},{"id":"ff236569b4a13740","parameter":"Nitrate/Nitrite","value":"2.0","value_num":2,"unit":"mg/L","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"name:nitrate/nitrite","place":["US"],"conditions":["route is direct","cites is 40 CFR 423","existing sources (BAT)","(3) Voluntary incentives plan. (i) For dischargers who voluntarily choose to meet the effluent limitations for FGD wastewater in this paragraph (g)(3)(i), the quantity of pollutants in FGD wastewater shall not exceed the quantity determined by multiplying the flow of FGD wastewater times the concentration listed in table 7 to this paragraph (g)(3)(i). Dischargers who choose to meet the effluent…","table: Table 7 to Paragraph ( g )(3)( i )"],"cite":{"instrument":"us_40cfr423","title":"40 CFR Part 423 — PART 423—STEAM ELECTRIC POWER GENERATING 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=423","source_sha256":"60cadc14b8fc25c39238a9d55cede55743d6b349ca20c8f8158b0f7e5d98fd64","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 423.13 (BAT)","page":null,"quote":"Nitrate/Nitrite (mg/L) 2.0 1.2"}},{"id":"bd56f70d10e7221f","parameter":"Nitrate/Nitrite","value":"1.2","value_num":1.2,"unit":"mg/L","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"name:nitrate/nitrite","place":["US"],"conditions":["route is direct","cites is 40 CFR 423","existing sources (BAT)","(3) Voluntary incentives plan. (i) For dischargers who voluntarily choose to meet the effluent limitations for FGD wastewater in this paragraph (g)(3)(i), the quantity of pollutants in FGD wastewater shall not exceed the quantity determined by multiplying the flow of FGD wastewater times the concentration listed in table 7 to this paragraph (g)(3)(i). Dischargers who choose to meet the effluent…","table: Table 7 to Paragraph ( g )(3)( i )"],"cite":{"instrument":"us_40cfr423","title":"40 CFR Part 423 — PART 423—STEAM ELECTRIC POWER GENERATING 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=423","source_sha256":"60cadc14b8fc25c39238a9d55cede55743d6b349ca20c8f8158b0f7e5d98fd64","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 423.13 (BAT)","page":null,"quote":"Nitrate/Nitrite (mg/L) 2.0 1.2"}},{"id":"ee7b591236c21357","parameter":"Nitrate/nitrite as N","value":"4","value_num":4,"unit":"mg/L","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"name:nitrate/nitrite as n","place":["US"],"conditions":["route is direct","cites is 40 CFR 423","existing sources (BAT)","(g) FGD wastewater —(1) 2020 BAT. (i) Except for those discharges to which paragraph (g)(2) or (3) of this section applies, the quantity of pollutants in FGD wastewater shall not exceed the quantity determined by multiplying the flow of FGD wastewater times the concentration listed in table 5 to this paragraph (g)(1)(i). Dischargers must meet the effluent limitations for FGD wastewater in this …","table: Table 5 to Paragraph ( g )(1)( i )"],"cite":{"instrument":"us_40cfr423","title":"40 CFR Part 423 — PART 423—STEAM ELECTRIC POWER GENERATING 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=423","source_sha256":"60cadc14b8fc25c39238a9d55cede55743d6b349ca20c8f8158b0f7e5d98fd64","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 423.13 (BAT)","page":null,"quote":"Nitrate/nitrite as N (mg/L) 4 3"}},{"id":"884b3043b1528c34","parameter":"Nitrate/nitrite as N","value":"3","value_num":3,"unit":"mg/L","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"name:nitrate/nitrite as n","place":["US"],"conditions":["route is direct","cites is 40 CFR 423","existing sources (BAT)","(g) FGD wastewater —(1) 2020 BAT. (i) Except for those discharges to which paragraph (g)(2) or (3) of this section applies, the quantity of pollutants in FGD wastewater shall not exceed the quantity determined by multiplying the flow of FGD wastewater times the concentration listed in table 5 to this paragraph (g)(1)(i). Dischargers must meet the effluent limitations for FGD wastewater in this …","table: Table 5 to Paragraph ( g )(1)( i )"],"cite":{"instrument":"us_40cfr423","title":"40 CFR Part 423 — PART 423—STEAM ELECTRIC POWER GENERATING 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=423","source_sha256":"60cadc14b8fc25c39238a9d55cede55743d6b349ca20c8f8158b0f7e5d98fd64","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 423.13 (BAT)","page":null,"quote":"Nitrate/nitrite as N (mg/L) 4 3"}},{"id":"53d6d195b2d1b594","parameter":"Nitrate/nitrite as N","value":"4","value_num":4,"unit":"mg/L","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"sewer","parameter_key":"name:nitrate/nitrite as n","place":["US"],"conditions":["route is sewer","cites is 40 CFR 423","existing sources (PSES)","(e) FGD wastewater —(1) 2020 PSES. Except as provided for in paragraph (e)(2) of this section, for any electric generating unit with a total nameplate generating capacity of more than 50 megawatts, that is not an oil-fired unit, and that the owner has not certified that it will cease coal combustion pursuant to § 423.19(g), the quantity of pollutants in FGD wastewater shall not exceed the quant…","table: Table 3 to Paragraph (e)(1)"],"cite":{"instrument":"us_40cfr423","title":"40 CFR Part 423 — PART 423—STEAM ELECTRIC POWER GENERATING 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=423","source_sha256":"60cadc14b8fc25c39238a9d55cede55743d6b349ca20c8f8158b0f7e5d98fd64","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 423.16 (PSES)","page":null,"quote":"Nitrate/nitrite as N (mg/L) 4 3"}},{"id":"2c560d831e162389","parameter":"Nitrate/nitrite as N","value":"3","value_num":3,"unit":"mg/L","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"sewer","parameter_key":"name:nitrate/nitrite as n","place":["US"],"conditions":["route is sewer","cites is 40 CFR 423","existing sources (PSES)","(e) FGD wastewater —(1) 2020 PSES. Except as provided for in paragraph (e)(2) of this section, for any electric generating unit with a total nameplate generating capacity of more than 50 megawatts, that is not an oil-fired unit, and that the owner has not certified that it will cease coal combustion pursuant to § 423.19(g), the quantity of pollutants in FGD wastewater shall not exceed the quant…","table: Table 3 to Paragraph (e)(1)"],"cite":{"instrument":"us_40cfr423","title":"40 CFR Part 423 — PART 423—STEAM ELECTRIC POWER GENERATING 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=423","source_sha256":"60cadc14b8fc25c39238a9d55cede55743d6b349ca20c8f8158b0f7e5d98fd64","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 423.16 (PSES)","page":null,"quote":"Nitrate/nitrite as N (mg/L) 4 3"}}],"next":[{"tool":"check_values","says":"Has your user measured this? check_values sets each of their results beside every row held here, with a verdict and the row's cite.","arguments":{"place":"US-ND"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"nitrate nitrite as n\", value, unit}, ...], any other parameters too."},"post":"/api/v1/check"},{"tool":"read_certificate","says":"Has your user a laboratory certificate? read_certificate reads every row it prints, each with its page, and checks them against these limits.","arguments":{"place":"US-ND"},"needs":{"content_base64":"The laboratory's certificate (PDF) or its XLSX, XLS or CSV export, as base64; or file_url, a public https address of it."},"post":"/api/v1/certificate"}]}