AK Steel Corporation

NPDES permit OH0006858 · Major NON-POTW · effective, expires 2028-06-30 · 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 45 forms filed late

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

Reporting

Reports are due about 20 days after each monitoring period ends (the most common figure among OH permits in EPA's filings — check your permit).

Limits in force (42)

OutfallParameterStatisticLimitMonths
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX report only all year
001Oil and grease, hexane extr methodMO AVG report only all year
001Oil and grease, hexane extr methodDAILY MX report only all year
001Hardness, total [as CaCO3]MO AVG report only all year
001Hardness, total [as CaCO3]DAILY MX report only 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
002Temperature, water deg. fahrenheitMO AVG report only all year
002Temperature, water deg. fahrenheitDAILY MX report only all year
002pHDAILY MN >= 6.5 SU all year
002pHDAILY MX <= 9 SU all year
002Solids, total suspendedMO AVG report only all year
002Solids, total suspendedDAILY MX report only all year
002Oil and grease, hexane extr methodMO AVG report only all year
002Oil and grease, hexane extr methodDAILY MX report only all year
002Hardness, total [as CaCO3]MO AVG report only all year
002Hardness, total [as CaCO3]DAILY MX report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
596Biosolids weight indluding admixturesMO AVG report only Dec
596Biosolids weight indluding admixturesDAILY MX report only Dec
612pHDAILY MN report only all year
612pHDAILY MX report only all year
612Solids, total suspendedMO AVG <= 198 kg/d all year
612Solids, total suspendedDAILY MX <= 461 kg/d all year
612Oil and grease [soxhlet extr.] tot.MO AVG <= 57 kg/d all year
612Oil and grease [soxhlet extr.] tot.DAILY MX <= 79 kg/d all year
612Chromium, total [as Cr]MO AVG <= 2.52 kg/d all year
612Chromium, total [as Cr]DAILY MX <= 6.3 kg/d all year
612Nickel, total [as Ni]MO AVG <= 1.89 kg/d all year
612Nickel, total [as Ni]DAILY MX <= 5.67 kg/d all year
612Chromium, hexavalent dissolved [as Cr]MO AVG report only all year
612Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
612Flow, in conduit or thru treatment plantMO AVG report only all year
612Flow, in conduit or thru treatment plantDAILY MX report only all year
800Flow rate, instantaneousMO AVG report only all year
800Flow rate, instantaneousDAILY MX report only all year
800Flow, totalMO AVG report only all year
800Flow, totalDAILY 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