{"permit":"NC0032131","name":"Tweetsie Railroad","state":"NC","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/NC0032131"},"about":[{"label":"What it is","text":"Amusement And Recreation (EPA's industry listing)"},{"label":"Where","text":"Blowing Rock, North Carolina","href":"https://www.openstreetmap.org/?mlat=36.169722&mlon=-81.6475#map=14/36.169722/-81.6475"},{"label":"Last 12 months","text":"Over a limit 7 times, last in June 2026 (BOD, 5-day, 20 deg. C; Solids, total suspended; Nitrogen, ammonia total [as N])"},{"label":"Permit","text":"Expired Mar 31, 2026; 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":"2025-10-02","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/NC0032131#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":"NC","sic":"79","permits":10,"list":"https://passage-data.com/api/v1/permits?state=NC&sic=79","page":"https://passage-data.com/dmr/s/NC/79"},"limits_from_version":null,"record":{"last_filed":"2026-08-31","over":7,"over_by":[["BOD, 5-day, 20 deg. C",3],["Solids, total suspended",3],["Nitrogen, ammonia total [as N]",1]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"BOD, 5-day, 20 deg. C","times":3,"find_limits":{"parameter":"bod","place":"US-NC","medium":"water_discharge"},"get":"https://passage-data.com/api/v1/limits?parameter=bod&place=US-NC&medium=water_discharge"},{"parameter":"Solids, total suspended","times":3,"find_limits":{"parameter":"total suspended solids","place":"US-NC","medium":"water_discharge"},"get":"https://passage-data.com/api/v1/limits?parameter=total+suspended+solids&place=US-NC&medium=water_discharge"},{"parameter":"Nitrogen, ammonia total [as N]","times":1,"find_limits":{"parameter":"ammonia","place":"US-NC","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=ammonia&place=US-NC&medium=surface_water"}],"limits":[{"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":"Effluent to Middle Fork S Fork New River  - Monthly"},{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"daily minimum","qualifier":">=","value":"5","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Effluent to Middle Fork S Fork New River  - Monthly"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"30-day average","qualifier":"<=","value":"5","unit":"mg/L","report_only":false,"enforceable":true,"months":["APR","MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"Effluent to Middle Fork S Fork New River  - Monthly"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"30-day average","qualifier":"<=","value":"10","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","NOV","DEC"],"limit_set":"Effluent to Middle Fork S Fork New River  - Monthly"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"daily maximum","qualifier":"<=","value":"7.5","unit":"mg/L","report_only":false,"enforceable":true,"months":["APR","MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"Effluent to Middle Fork S Fork New River  - Monthly"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"daily maximum","qualifier":"<=","value":"15","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","NOV","DEC"],"limit_set":"Effluent to Middle Fork S Fork New River  - Monthly"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"daily minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"Effluent to Middle Fork S Fork New River  - Monthly"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"daily maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"Effluent to Middle Fork S Fork New River  - Monthly"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"30-day average","qualifier":"<=","value":"10","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Effluent to Middle Fork S Fork New River  - Monthly"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"daily maximum","qualifier":"<=","value":"15","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Effluent to Middle Fork S Fork New River  - Monthly"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"2","unit":"mg/L","report_only":false,"enforceable":true,"months":["APR","MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"Effluent to Middle Fork S Fork New River  - Monthly"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"30-day average","qualifier":"<=","value":"4","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","NOV","DEC"],"limit_set":"Effluent to Middle Fork S Fork New River  - Monthly"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"10","unit":"mg/L","report_only":false,"enforceable":true,"months":["APR","MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"Effluent to Middle Fork S Fork New River  - Monthly"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"20","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","NOV","DEC"],"limit_set":"Effluent to Middle Fork S Fork New River  - Monthly"},{"outfall":"001","parameter":"Coliform, fecal MF, MFC broth, 44.5 C","parameter_code":"31616","statistic":"monthly geometric mean","qualifier":"<=","value":"200","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"Effluent to Middle Fork S Fork New River  - Monthly"},{"outfall":"001","parameter":"Coliform, fecal MF, MFC broth, 44.5 C","parameter_code":"31616","statistic":"daily maximum","qualifier":"<=","value":"400","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"Effluent to Middle Fork S Fork New River  - Monthly"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"30-day average","qualifier":"<=","value":".07","unit":"MGD","report_only":false,"enforceable":true,"months":"all","limit_set":"Effluent to Middle Fork S Fork New River  - Monthly"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"daily maximum","qualifier":"<=","value":"17","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Effluent to Middle Fork S Fork New River  - Monthly"}],"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":"NC","sic":"79"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=NC&sic=79","url":"https://passage-data.com/api/v1/permits?state=NC&sic=79","page":"https://passage-data.com/dmr/s/NC/79"},{"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-NC","medium":"water_discharge"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=bod&place=US-NC&medium=water_discharge","url":"https://passage-data.com/api/v1/limits?parameter=bod&place=US-NC&medium=water_discharge","page":"https://passage-data.com/limits/US-NC/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":"NC0032131"},"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=NC0032131"},{"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":"NC0032131"},"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=NC0032131"}]}