{"query":{"parameter":"produced water","place":"US-ND","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-ND","US"],"parameter_keys":["name:produced water","name:o&g","name:o&g*","name:oil & grease","name:oil and grease","name:oil and grease (alternate monitoring parameter","name:oil and grease (for alternate monitoring","name:oil and grease for alternate monitoring)"],"names_matched":[["produced water","name:produced water"],["oil in water concentration in discharged produced water","name:o&g"],["oil in water concentration in discharged produced water","name:o&g*"],["oil in water concentration in discharged produced water","name:oil & grease"],["oil in water concentration in discharged produced water","name:oil and grease"],["oil in water concentration in discharged produced water","name:oil and grease (alternate monitoring parameter"],["oil in water concentration in discharged produced water","name:oil and grease (for alternate monitoring"],["oil in water concentration in discharged produced water","name:oil and grease for alternate monitoring)"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order","not_sent":{"rows":2495,"names":["Oil and grease","O&G","Oil and grease (alternate monitoring parameter)","Oil and grease (for alternate monitoring)","Oil and Grease","Oil & Grease","Oil and Grease (for alternate monitoring)","O&G (as HEM)"],"says":"2495 rows share a parameter key with a longer name holding \"produced water\" but are printed under names without these words (that key is wider than the name), or keyed to a CAS number \"produced water\" does not name (another substance, whatever words its name holds): not sent. Ask for one by its name or CAS number."}},"total":4,"offset":0,"returned":4,"next_offset":null,"rows":[{"id":"e5a704015dc250ab","parameter":"Produced water","value":"72","value_num":72,"unit":"mg/L","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"name:produced water","place":["US"],"conditions":["route is direct","cites is 40 CFR 435","the discharge is of the Subpart A—Offshore Subcategory","existing sources (BPT)","table: BPT Effluent Limitations—Oil and Grease [In milligrams per liter]"],"cite":{"instrument":"us_40cfr435","title":"40 CFR Part 435 — PART 435—OIL AND GAS EXTRACTION 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=435","source_sha256":"e485b5e90afd26961e2964355f78ce1d1a1781ac67e588a9f2ea6fd1ad913db2","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 435.12 (BPT)","page":null,"quote":"Produced water 72 48 NA"}},{"id":"4915c50cf3ba6727","parameter":"Produced water","value":"48","value_num":48,"unit":"mg/L","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"name:produced water","place":["US"],"conditions":["route is direct","cites is 40 CFR 435","the discharge is of the Subpart A—Offshore Subcategory","existing sources (BPT)","table: BPT Effluent Limitations—Oil and Grease [In milligrams per liter]"],"cite":{"instrument":"us_40cfr435","title":"40 CFR Part 435 — PART 435—OIL AND GAS EXTRACTION 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=435","source_sha256":"e485b5e90afd26961e2964355f78ce1d1a1781ac67e588a9f2ea6fd1ad913db2","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 435.12 (BPT)","page":null,"quote":"Produced water 72 48 NA"}},{"id":"83af86827f9e065f","parameter":"Produced water","value":"72","value_num":72,"unit":"mg/L","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"name:produced water","place":["US"],"conditions":["route is direct","cites is 40 CFR 435","the discharge is of the Subpart D—Coastal Subcategory","existing sources (BPT)","table: BPT Effluent Limitations—Oil and Grease [In milligrams per liter]"],"cite":{"instrument":"us_40cfr435","title":"40 CFR Part 435 — PART 435—OIL AND GAS EXTRACTION 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=435","source_sha256":"e485b5e90afd26961e2964355f78ce1d1a1781ac67e588a9f2ea6fd1ad913db2","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 435.42 (BPT)","page":null,"quote":"Produced water 72 48 NA"}},{"id":"2aed4fa68375e111","parameter":"Produced water","value":"48","value_num":48,"unit":"mg/L","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"name:produced water","place":["US"],"conditions":["route is direct","cites is 40 CFR 435","the discharge is of the Subpart D—Coastal Subcategory","existing sources (BPT)","table: BPT Effluent Limitations—Oil and Grease [In milligrams per liter]"],"cite":{"instrument":"us_40cfr435","title":"40 CFR Part 435 — PART 435—OIL AND GAS EXTRACTION 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=435","source_sha256":"e485b5e90afd26961e2964355f78ce1d1a1781ac67e588a9f2ea6fd1ad913db2","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 435.42 (BPT)","page":null,"quote":"Produced water 72 48 NA"}}],"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: \"produced water\", 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"}]}