{"permit":"NC0004987","name":"Duke Energy Carolinas LLC","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/NC0004987"},"about":[{"label":"What it is","text":"Electric Services (EPA's industry listing) · rated a major discharger by EPA"},{"label":"Where","text":"Terrell, North Carolina","href":"https://www.openstreetmap.org/?mlat=35.595278&mlon=-80.964444#map=14/35.595278/-80.964444"},{"label":"Last 12 months","text":"Over a limit 10 times, last in August 2026 (Copper, total [as Cu]; Iron, total [as Fe]). 34 required values not reported. 5 of 54 reports filed late"},{"label":"Permit","text":"In force until Mar 31, 2027"}],"renewal_due":{"date":"2026-10-02","when":"Oct 2, 2026, overdue","urgent":true},"renewal_check":{"offered_because":"application_overdue","application_due":"2026-10-02","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/NC0004987#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":"4911","permits":20,"list":"https://passage-data.com/api/v1/permits?state=NC&sic=4911","page":"https://passage-data.com/dmr/s/NC/4911"},"limits_from_version":null,"record":{"last_filed":"2026-08-31","over":10,"over_by":[["Copper, total [as Cu]",8],["Iron, total [as Fe]",2]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"Copper, total [as Cu]","times":8,"find_limits":{"parameter":"copper","place":"US-NC","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=copper&place=US-NC&medium=surface_water"},{"parameter":"Iron, total [as Fe]","times":2,"find_limits":{"parameter":"iron","place":"US-NC","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=iron&place=US-NC&medium=surface_water"}],"limits":[{"outfall":"001","parameter":"Temperature, water deg. centigrade","parameter_code":"00010","statistic":"30-day average","qualifier":"<=","value":"34.4","unit":"deg C","report_only":false,"enforceable":true,"months":["JUL","AUG","SEP","OCT"],"limit_set":"Once Through Cooling Water  - 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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":"4911"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=NC&sic=4911","url":"https://passage-data.com/api/v1/permits?state=NC&sic=4911","page":"https://passage-data.com/dmr/s/NC/4911"},{"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":"copper","place":"US-NC","medium":"surface_water"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=copper&place=US-NC&medium=surface_water","url":"https://passage-data.com/api/v1/limits?parameter=copper&place=US-NC&medium=surface_water","page":"https://passage-data.com/limits/US-NC/copper"},{"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":"NC0004987"},"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=NC0004987"},{"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":"NC0004987"},"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=NC0004987"}]}