{"permit":"AR0001414","name":"3M - Arch Street Plant","state":"AR","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/AR0001414"},"about":[{"label":"What it is","text":"Clay And Related Minerals (EPA's industry listing)"},{"label":"Where","text":"Little Rock, Arkansas","href":"https://www.openstreetmap.org/?mlat=34.691389&mlon=-92.294722#map=14/34.691389/-92.294722"},{"label":"Last 12 months","text":"Over a limit 4 times, last in April 2026 (Oxygen demand, chem. [low level] [COD]). 2 of 24 reports filed late"},{"label":"Permit","text":"In force until Jan 31, 2029"}],"renewal_due":null,"renewal_check":null,"sector":{"state":"AR","sic":"14","permits":30,"list":"https://passage-data.com/api/v1/permits?state=AR&sic=14","page":"https://passage-data.com/dmr/s/AR/14"},"limits_from_version":null,"record":{"last_filed":"2026-09-30","over":4,"over_by":[["Oxygen demand, chem. 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fetch.","arguments":{"state":"AR","sic":"14"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=AR&sic=14","url":"https://passage-data.com/api/v1/permits?state=AR&sic=14","page":"https://passage-data.com/dmr/s/AR/14"},{"tool":"find_limits","says":"What do the rules say about what it went over on? find_limits gives the cited state and federal limits for it, each with its rule; `get` is the address to fetch, and `over_limits` holds one for each parameter.","arguments":{"parameter":"cod","place":"US-AR","medium":"water_discharge"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=cod&place=US-AR&medium=water_discharge","url":"https://passage-data.com/api/v1/limits?parameter=cod&place=US-AR&medium=water_discharge","page":"https://passage-data.com/limits/US-AR/cod"},{"tool":"check_dmr","says":"Before your user files this permit's DMR: check_dmr sets each value beside the permit's limit for that period, with EPA's violation rule's verdict.","arguments":{"permit":"AR0001414"},"needs":{"period_end":"The reporting period: its month (2026-09).","values":"The period's values as your user will file them: [{outfall, parameter, statistic, value, unit}, ...]."},"post":"/api/v1/dmr/check","url":"https://passage-data.com/api/v1/dmr/check","page":"https://passage-data.com/dmr/?permit=AR0001414"},{"tool":"fill_dmr","says":"Has your user the plant's raw daily results? fill_dmr computes the period's DMR values from them, each with the rows it came from.","arguments":{"permit":"AR0001414"},"needs":{"period_end":"The reporting period: its month (2026-09).","rows":"The plant's results: [{date, parameter, value, unit, point}, ...]; or `table`, the lab's or plant's export as text."},"post":"/api/v1/dmr/fill","url":"https://passage-data.com/api/v1/dmr/fill","page":"https://passage-data.com/dmr/?permit=AR0001414"}]}