{"permit":"SD0028615","name":"Powder House Pass CID","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/SD0028615"},"about":[{"label":"What it is","text":"Sewerage Systems (EPA's industry listing)"},{"label":"Where","text":"Lead, South Dakota","href":"https://www.openstreetmap.org/?mlat=44.3180940&mlon=-103.789031#map=14/44.3180940/-103.789031"},{"label":"Last 12 months","text":"No values over a limit"},{"label":"Permit","text":"In force until Dec 31, 2027"}],"renewal_due":null,"renewal_check":{"offered_because":"application_due_within_18_months","application_due":"2027-07-04","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/SD0028615#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":0,"over_by":[],"window":["2025-10-01","2026-09-30"]},"over_limits":[],"limits":[{"outfall":"001","parameter":"Temperature, water deg. centigrade","parameter_code":"00010","statistic":"30-day average","qualifier":null,"value":null,"unit":"deg C","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the effluent aeration chamber through the effluent weir"},{"outfall":"001","parameter":"Temperature, water deg. centigrade","parameter_code":"00010","statistic":"daily maximum","qualifier":null,"value":null,"unit":"deg C","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the effluent aeration chamber through the effluent weir"},{"outfall":"001","parameter":"Flow rate","parameter_code":"00056","statistic":"30-day average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the effluent aeration chamber through the effluent weir"},{"outfall":"001","parameter":"Flow rate","parameter_code":"00056","statistic":"daily maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the effluent aeration chamber through the effluent weir"},{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"daily minimum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the effluent aeration chamber through the effluent weir"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. 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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":"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":"SD0028615"},"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=SD0028615"},{"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":"SD0028615"},"needs":{"period_end":"The reporting period: its month 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