{"query":{"parameter":"any regulated nsr pollutant","place":"US-AR","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-AR","US"],"parameter_keys":["name:any regulated nsr pollutant"],"names_matched":[["any regulated nsr pollutant","name:any regulated nsr pollutant"]],"match":"exact","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":2,"offset":0,"returned":2,"next_offset":null,"rows":[{"id":"be5334ab4501bdbb","parameter":"any regulated NSR pollutant (listed source categories)","value":"100","value_num":100,"unit":"tpy","direction":"max","kind":"threshold","medium":"air_emission","level":"national","parameter_key":"name:any regulated nsr pollutant","place":["US"],"conditions":["one of the listed categories, among them 'chemical process plants' and 'hydrofluoric, sulfuric, and nitric acid plants' (52.21(b)(1)(i)(a))"],"cite":{"instrument":"us_40cfr52_21","title":"40 CFR 52.21 — Prevention of significant deterioration of air quality","issuer":null,"edition":"eCFR 2026-08-01 (versioner API)","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-40.xml?part=52&section=52.21","source_sha256":"857e290109cd8028b70b239ab2b16e9c5d068a71e557a7c419ebba4dee2c40b4","fetched_at":"2026-09-25","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"52.21(b)(1)(i)(a)","page":null,"quote":"which emits, or has the potential to emit, 100 tons per year or more of any regulated NSR pollutant"}},{"id":"ff5bdef02ba054cf","parameter":"any regulated NSR pollutant","value":"250","value_num":250,"unit":"tpy","direction":"max","kind":"threshold","medium":"air_emission","level":"national","parameter_key":"name:any regulated nsr pollutant","place":["US"],"conditions":[],"cite":{"instrument":"us_40cfr52_21","title":"40 CFR 52.21 — Prevention of significant deterioration of air quality","issuer":null,"edition":"eCFR 2026-08-01 (versioner API)","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-40.xml?part=52&section=52.21","source_sha256":"857e290109cd8028b70b239ab2b16e9c5d068a71e557a7c419ebba4dee2c40b4","fetched_at":"2026-09-25","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"52.21(b)(1)(i)(b)","page":null,"quote":"any stationary source which emits, or has the potential to emit, 250 tons per year or more of a regulated NSR pollutant"}}],"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-AR"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"any regulated nsr pollutant\", 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-AR"},"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"}]}