{"permit":"TN0026450","name":"Tennessee Valley Authority (TVA)","state":"TN","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/TN0026450"},"about":[{"label":"What it is","text":"Federal facility · Electric Services (EPA's industry listing) · rated a major discharger by EPA"},{"label":"Where","text":"Soddy Daisy, Tennessee","href":"https://www.openstreetmap.org/?mlat=35.223056&mlon=-85.091111#map=14/35.223056/-85.091111"},{"label":"Last 12 months","text":"No values over a limit. 5 of 60 reports filed late"},{"label":"Permit","text":"Expired Jul 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":"2025-02-01","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/TN0026450#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":"TN","sic":"4911","permits":15,"list":"https://passage-data.com/api/v1/permits?state=TN&sic=4911","page":"https://passage-data.com/dmr/s/TN/4911"},"limits_from_version":null,"record":{"last_filed":"2026-09-30","over":0,"over_by":[],"window":["2025-10-01","2026-09-30"]},"over_limits":[],"limits":[{"outfall":"101","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":"Monthly reporting for Outfall 101 (& 101 Emergency Spillway)- Diffuser Pond"},{"outfall":"101","parameter":"Temperature, water deg. centigrade","parameter_code":"00010","statistic":"daily maximum","qualifier":"<=","value":"30.5","unit":"deg C","report_only":false,"enforceable":true,"months":"all","limit_set":"Monthly reporting for Outfall 101 (& 101 Emergency Spillway)- Diffuser Pond"},{"outfall":"101","parameter":"Temp. diff. between samp. & upstrm deg. C","parameter_code":"00016","statistic":"daily maximum","qualifier":"<=","value":"3","unit":"deg C","report_only":false,"enforceable":true,"months":["APR","MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"Monthly reporting for Outfall 101 (& 101 Emergency Spillway)- Diffuser Pond"},{"outfall":"101","parameter":"Temp. diff. between samp. & upstrm deg. C","parameter_code":"00016","statistic":"daily maximum","qualifier":"<=","value":"5","unit":"deg C","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","NOV","DEC"],"limit_set":"Monthly reporting for Outfall 101 (& 101 Emergency Spillway)- Diffuser Pond"},{"outfall":"101","parameter":"Polychlorinated biphenyls [PCBs]","parameter_code":"39516","statistic":"daily maximum","qualifier":"<=","value":"0","unit":"ppm","report_only":false,"enforceable":true,"months":"all","limit_set":"Monthly reporting for Outfall 101 (& 101 Emergency Spillway)- Diffuser Pond"},{"outfall":"101","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"monthly average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"Monthly reporting for Outfall 101 (& 101 Emergency Spillway)- Diffuser Pond"},{"outfall":"101","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"daily maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"Monthly reporting for Outfall 101 (& 101 Emergency Spillway)- Diffuser Pond"},{"outfall":"101","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"monthly average","qualifier":"<=","value":".027","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Monthly reporting for Outfall 101 (& 101 Emergency Spillway)- Diffuser Pond"},{"outfall":"101","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"daily maximum","qualifier":"<=","value":".047","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Monthly reporting for Outfall 101 (& 101 Emergency Spillway)- Diffuser Pond"},{"outfall":"101","parameter":"Temperature rate of change deg. 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Waste Ponds"},{"outfall":"107","parameter":"Iron, total [as Fe]","parameter_code":"01045","statistic":"daily maximum","qualifier":"<=","value":"1","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Monthly reporting for IMP 107- Metal Cleaning Waste Ponds"},{"outfall":"110","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":"Monthly Reporting for Outfall 110"},{"outfall":"110","parameter":"Temperature, water deg. centigrade","parameter_code":"00010","statistic":"daily maximum","qualifier":"<=","value":"30.5","unit":"deg C","report_only":false,"enforceable":true,"months":"all","limit_set":"Monthly Reporting for Outfall 110"},{"outfall":"110","parameter":"Temp. diff. between samp. & upstrm deg. 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C/hr","parameter_code":"82234","statistic":"daily maximum","qualifier":"<=","value":"2","unit":"deg C/hr","report_only":false,"enforceable":true,"months":"all","limit_set":"Monthly Reporting for Outfall 110"},{"outfall":"110","parameter":"IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia","parameter_code":"T7P3B","statistic":"minimum","qualifier":">","value":"69","unit":"%","report_only":false,"enforceable":true,"months":"all","limit_set":"Monthly Reporting for Outfall 110"},{"outfall":"110","parameter":"IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas","parameter_code":"T7P6C","statistic":"minimum","qualifier":">","value":"69","unit":"%","report_only":false,"enforceable":true,"months":"all","limit_set":"Monthly Reporting for Outfall 110"},{"outfall":"118","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"minimum","qualifier":">=","value":"2","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Monthly Reporting for Internal Outfall 118"},{"outfall":"118","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"daily maximum","qualifier":"<=","value":"100","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Monthly Reporting for Internal Outfall 118"},{"outfall":"118","parameter":"Solids, settleable","parameter_code":"00545","statistic":"daily maximum","qualifier":"<=","value":"1","unit":"mL/L","report_only":false,"enforceable":true,"months":"all","limit_set":"Monthly Reporting for Internal Outfall 118"},{"outfall":"118","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"monthly average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"Monthly Reporting for Internal Outfall 118"},{"outfall":"118","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"daily maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"Monthly Reporting for Internal Outfall 118"}],"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":"TN","sic":"4911"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=TN&sic=4911","url":"https://passage-data.com/api/v1/permits?state=TN&sic=4911","page":"https://passage-data.com/dmr/s/TN/4911"},{"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":"TN0026450"},"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=TN0026450"},{"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":"TN0026450"},"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=TN0026450"}]}