{"permit":"MN0055948","name":"US Steel Corp - Tailings","state":"MN","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/MN0055948"},"about":[{"label":"What it is","text":"Iron Ores (EPA's industry listing)"},{"label":"Where","text":"Keewatin, Minnesota","href":"https://www.openstreetmap.org/?mlat=47.41326&mlon=-93.063575#map=14/47.41326/-93.063575"},{"label":"Last 12 months","text":"No values over a limit. 42 required values not reported"},{"label":"Permit","text":"Expired Oct 31, 2016; its limits still apply until a new permit is issued, and EPA still expects the reports"}],"renewal_due":null,"renewal_check":{"offered_because":"permit_expired","application_due":"2016-05-04","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/MN0055948#renewal","says":"Each limit a renewal could tighten or add, from the state's water-quality standards and the federal rules for this kind of discharge, each cited to its rule, beside EPA's 12-month record; a rule we do not hold is named, never guessed. A person orders it on the permit's page with their email; it is sent by email within 5 business days."},"sector":{"state":"MN","sic":"10","permits":7,"list":"https://passage-data.com/api/v1/permits?state=MN&sic=10","page":"https://passage-data.com/dmr/s/MN/10"},"limits_from_version":null,"record":{"last_filed":"2026-06-30","over":0,"over_by":[],"window":["2025-10-01","2026-09-30"]},"over_limits":[],"limits":[{"outfall":"010","parameter":"Specific conductance","parameter_code":"00095","statistic":"monthly average","qualifier":null,"value":null,"unit":"mmho/cm","report_only":true,"enforceable":true,"months":"all","limit_set":"SD001 SIPHON OUTFALLS 010, 011, 012, 013"},{"outfall":"010","parameter":"pH","parameter_code":"00400","statistic":"instantaneous minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"SD001 SIPHON OUTFALLS 010, 011, 012, 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fetch.","arguments":{"state":"MN","sic":"10"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=MN&sic=10","url":"https://passage-data.com/api/v1/permits?state=MN&sic=10","page":"https://passage-data.com/dmr/s/MN/10"},{"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":"MN0055948"},"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=MN0055948"},{"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":"MN0055948"},"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=MN0055948"}]}