{"permit":"AZ0000035","name":"Asarco Llc - Ray Operations","state":"AZ","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/AZ0000035"},"about":[{"label":"What it is","text":"Copper Ores (EPA's industry listing) · rated a major discharger by EPA"},{"label":"Where","text":"Kearny, Arizona","href":"https://www.openstreetmap.org/?mlat=33.15545&mlon=-110.97579#map=14/33.15545/-110.97579"},{"label":"Last 12 months","text":"No values over a limit. 26 required values not reported"},{"label":"Permit","text":"Expired Feb 21, 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":"2025-08-25","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/AZ0000035#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":"AZ","sic":"10","permits":8,"list":"https://passage-data.com/api/v1/permits?state=AZ&sic=10","page":"https://passage-data.com/dmr/s/AZ/10"},"limits_from_version":null,"record":{"last_filed":"2026-06-30","over":0,"over_by":[],"window":["2025-10-01","2026-09-30"]},"over_limits":[],"limits":[{"outfall":"010","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"ASARCO RAY MINE OPERATIONS - Outfall 010"},{"outfall":"010","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":null,"value":null,"unit":"SU","report_only":true,"enforceable":true,"months":"all","limit_set":"ASARCO RAY MINE OPERATIONS - Outfall 010"},{"outfall":"010","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":null,"value":null,"unit":"SU","report_only":true,"enforceable":true,"months":"all","limit_set":"ASARCO RAY MINE OPERATIONS - 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