{"permit":"SD0000299","name":"USGS - Eros Data Center","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/SD0000299"},"about":[{"label":"What it is","text":"Federal facility · Sewerage Systems (EPA's industry listing)"},{"label":"Where","text":"Sioux Falls, South Dakota","href":"https://www.openstreetmap.org/?mlat=43.7376110&mlon=-96.620694#map=14/43.7376110/-96.620694"},{"label":"Last 12 months","text":"No values over a limit"},{"label":"Permit","text":"Expired Mar 31, 2025; 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":"2024-10-02","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/SD0000299#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 V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"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 V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"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 V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"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 V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"daily maximum","qualifier":"<=","value":"20","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Any discharge from the V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"daily minimum","qualifier":">=","value":"6.5","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"Any discharge from the V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"daily maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"Any discharge from the V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"daily maximum","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Any discharge from the V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"outfall":"001","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"5.5","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN"],"limit_set":"Any discharge from the V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day 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average","qualifier":"<=","value":"4.3","unit":"mg/L","report_only":false,"enforceable":true,"months":["DEC"],"limit_set":"Any discharge from the V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"1.2","unit":"mg/L","report_only":false,"enforceable":true,"months":["MAY"],"limit_set":"Any discharge from the V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"7","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN"],"limit_set":"Any discharge from the V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily 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maximum","qualifier":"<=","value":"5.6","unit":"mg/L","report_only":false,"enforceable":true,"months":["JUN"],"limit_set":"Any discharge from the V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"4.3","unit":"mg/L","report_only":false,"enforceable":true,"months":["JUL"],"limit_set":"Any discharge from the V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"3.9","unit":"mg/L","report_only":false,"enforceable":true,"months":["AUG"],"limit_set":"Any discharge from the V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily 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maximum","qualifier":"<=","value":"5.1","unit":"mg/L","report_only":false,"enforceable":true,"months":["DEC"],"limit_set":"Any discharge from the V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"4.7","unit":"mg/L","report_only":false,"enforceable":true,"months":["MAY"],"limit_set":"Any discharge from the V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"outfall":"001","parameter":"E. coli, colony forming units [CFU]","parameter_code":"51041","statistic":"30-day geometric 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maximum","qualifier":null,"value":null,"unit":"N=0;Y=1","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."},{"outfall":"001","parameter":"Duration of discharge","parameter_code":"81381","statistic":"monthly total","qualifier":null,"value":null,"unit":"d","report_only":true,"enforceable":true,"months":"all","limit_set":"Any discharge from the V-notch weir in Cell #5 to unnamed tributary of West Pipestone Creek."}],"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":"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":"SD0000299"},"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=SD0000299"},{"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":"SD0000299"},"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=SD0000299"}]}