Freeport-Mcmoran Miami Inc.

NPDES permit AZ0024350 · Minor NON-POTW · effective, expires 2030-04-16 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
0of 11 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among AZ permits in EPA's filings — check your permit).

Limits in force (18)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 20 mg/L all year
001Solids, total suspendedDAILY MX <= 30 mg/L all year
001Cobalt, total [as Co]MO AVG <= 42 ug/L all year
001Cobalt, total [as Co]DAILY MX <= 706 ug/L all year
001Aluminum, total recoverableMO AVG <= 243 ug/L all year
001Aluminum, total recoverableDAILY MX <= 991 ug/L all year
001Manganese, total recoverableMO AVG <= 3391 ug/L all year
001Manganese, total recoverableDAILY MX <= 8798 ug/L all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001TU Static Renewal 48Hr Acute Daphnia magnaMO MED report only all year
001TU Static Renewal 48Hr Acute Daphnia magnaDAILY MX report only all year
001Static 7Day Chronic Pimephales PromelasMO MED report only all year
001Static 7Day Chronic Pimephales PromelasDAILY MX report only all year
001TU Static Renewal 7-Day Chronic Ceriodaphnia dubiaMO MED report only all year
001TU Static Renewal 7-Day Chronic Ceriodaphnia dubiaDAILY MX report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states