{"permit":"WV0117901","name":"MEPCO, LLC","state":"WV","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/WV0117901"},"about":[{"label":"What it is","text":"Coal And Other Minerals And Ores (EPA's industry listing)"},{"label":"Where","text":"Maidsville, West Virginia","href":"https://www.openstreetmap.org/?mlat=39.6908&mlon=-79.9739#map=14/39.6908/-79.9739"},{"label":"Last 12 months","text":"Over a limit 35 times, last in August 2026 (Cobalt, total recoverable; Aluminum, total recoverable; Nickel, total recoverable). 22 required values not reported. 2 of 16 reports filed late"},{"label":"Permit","text":"In force until Sep 6, 2027"}],"renewal_due":null,"renewal_check":{"offered_because":"application_due_within_18_months","application_due":"2027-03-10","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/WV0117901#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":"WV","sic":"50","permits":6,"list":"https://passage-data.com/api/v1/permits?state=WV&sic=50","page":"https://passage-data.com/dmr/s/WV/50"},"limits_from_version":null,"record":{"last_filed":"2026-08-31","over":35,"over_by":[["Cobalt, total recoverable",16],["Aluminum, total recoverable",15],["Nickel, total recoverable",2]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"Cobalt, total recoverable","times":16,"find_limits":{"parameter":"cobalt","place":"US-WV","medium":"water_discharge"},"get":"https://passage-data.com/api/v1/limits?parameter=cobalt&place=US-WV&medium=water_discharge"},{"parameter":"Aluminum, total recoverable","times":15,"find_limits":{"parameter":"aluminum","place":"US-WV","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=aluminum&place=US-WV&medium=surface_water"},{"parameter":"Nickel, total 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fetch.","arguments":{"state":"WV","sic":"50"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=WV&sic=50","url":"https://passage-data.com/api/v1/permits?state=WV&sic=50","page":"https://passage-data.com/dmr/s/WV/50"},{"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":"cobalt","place":"US-WV","medium":"water_discharge"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=cobalt&place=US-WV&medium=water_discharge","url":"https://passage-data.com/api/v1/limits?parameter=cobalt&place=US-WV&medium=water_discharge","page":"https://passage-data.com/limits/US-WV/cobalt"},{"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":"WV0117901"},"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=WV0117901"},{"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":"WV0117901"},"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=WV0117901"}]}