{"permit":"SD0021610","name":"USNPS - Mt. Rushmore National Memorial","state":"SD","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/SD0021610"},"about":[{"label":"What it is","text":"Federal facility · Sewerage Systems (EPA's industry listing)"},{"label":"Where","text":"Keystone, South Dakota","href":"https://www.openstreetmap.org/?mlat=43.8804270&mlon=-103.452347#map=14/43.8804270/-103.452347"},{"label":"Last 12 months","text":"Over a limit once, last in February 2026 (BOD, 5-day, 20 deg. C)"},{"label":"Permit","text":"Expired Jun 30, 2023; 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":"2023-01-01","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/SD0021610#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":"SD","sic":"4952","permits":148,"list":"https://passage-data.com/api/v1/permits?state=SD&sic=4952"},"limits_from_version":null,"record":{"last_filed":"2026-08-31","over":1,"over_by":[["BOD, 5-day, 20 deg. 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Rushmore's WWTF's UV disinfection system to an unnamed trib of Lafferty Gulch Cr"}],"next":[{"tool":"list_permits","says":"Screening this industry? list_permits lists every permit of it in this state in one call, each with its page and its get_permit address; `get` is the address to fetch.","arguments":{"state":"SD","sic":"4952"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=SD&sic=4952","url":"https://passage-data.com/api/v1/permits?state=SD&sic=4952"},{"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":"bod","place":"US-SD","medium":"water_discharge"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=bod&place=US-SD&medium=water_discharge","url":"https://passage-data.com/api/v1/limits?parameter=bod&place=US-SD&medium=water_discharge","page":"https://passage-data.com/limits/US-SD/bod"},{"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":"SD0021610"},"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=SD0021610"},{"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":"SD0021610"},"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=SD0021610"}]}