AK STEEL CORP

NPDES permit PA0006343 · Major NON-POTW · expired, expires 2019-11-30 · 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.

This permit expired on 2019-11-30 and is expired: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

0values over a limit
0required values missing, on 0 form(s)
0of 118 forms filed late

Last period with anything received: 2026-06-30.

Reporting

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

Limits in force (102)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedMO AVG <= 179 lb/d all year
001Solids, total suspendedDAILY MX <= 417 lb/d all year
001Chromium, hexavalent [as Cr]MO AVG <= .093 mg/L all year
001Chromium, hexavalent [as Cr]DAILY MX <= .19 mg/L all year
001Chromium, hexavalent [as Cr]MO AVG <= .26 lb/d all year
001Chromium, hexavalent [as Cr]DAILY MX <= .51 lb/d all year
001Chromium, total [as Cr]MO AVG report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Chromium, total [as Cr]MO AVG <= 2.4 lb/d all year
001Chromium, total [as Cr]DAILY MX <= 6 lb/d all year
001Iron, total [as Fe]MO AVG <= 4.3 mg/L all year
001Iron, total [as Fe]DAILY MX <= 8.7 mg/L all year
001Iron, total [as Fe]MO AVG report only all year
001Iron, total [as Fe]DAILY MX report only all year
001Nickel, total [as Ni]MO AVG report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Nickel, total [as Ni]MO AVG <= 1.8 lb/d all year
001Nickel, total [as Ni]DAILY MX <= 5.4 lb/d 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
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedINST MAX <= 150 mg/L all year
002Oil & GreaseINST MAX <= 30 mg/L all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
003pHMINIMUM >= 6 SU all year
003pHMAXIMUM <= 9 SU all year
003Solids, total suspendedINST MAX <= 150 mg/L all year
003Oil & GreaseINST MAX <= 30 mg/L all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
004pHMINIMUM >= 6 SU all year
004pHMAXIMUM <= 9 SU all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
005pHMINIMUM >= 6 SU all year
005pHMAXIMUM <= 9 SU all year
005Solids, total suspendedMO AVG report only all year
005Solids, total suspendedDAILY MX report only all year
005Solids, total suspendedMO AVG <= 1211 lb/d all year
005Solids, total suspendedDAILY MX <= 2935 lb/d all year
005Oil & GreaseMO AVG <= 15 mg/L all year
005Oil & GreaseDAILY MX report only all year
005Oil & GreaseMO AVG <= 398 lb/d all year
005Oil & GreaseDAILY MX <= 1191 lb/d all year
005Chromium, total [as Cr]MO AVG report only all year
005Chromium, total [as Cr]DAILY MX report only all year
005Chromium, total [as Cr]MO AVG <= 14.7 lb/d all year
005Chromium, total [as Cr]DAILY MX <= 37 lb/d all year
005Iron, total [as Fe]MO AVG <= 2.54 mg/L all year
005Iron, total [as Fe]DAILY MX <= 5.08 mg/L all year
005Iron, total [as Fe]MO AVG <= 55.7 lb/d all year
005Iron, total [as Fe]DAILY MX <= 111 lb/d all year
005Nickel, total [as Ni]MO AVG report only all year
005Nickel, total [as Ni]DAILY MX report only all year
005Nickel, total [as Ni]MO AVG <= 11.1 lb/d all year
005Nickel, total [as Ni]DAILY MX <= 33.3 lb/d all year
005TetrachloroethyleneDAILY MX <= .08 lb/d all year
005NaphthaleneDAILY MX <= .05 lb/d all year
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
005Solids, total dissolvedMO AVG report only all year
005Solids, total dissolvedMO AVG report only all year
006pHMINIMUM >= 6 SU all year
006pHMAXIMUM <= 9 SU all year
006Solids, total suspendedINST MAX <= 60 mg/L all year
006Oil & GreaseINST MAX <= 30 mg/L all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
007Solids, total suspendedMO AVG <= 1181 lb/d all year
007Solids, total suspendedDAILY MX <= 3153 lb/d all year
007Oil & GreaseDAILY MX <= 790 lb/d all year
007Flow, in conduit or thru treatment plantMO AVG report only all year
025pHMINIMUM >= 6 SU all year
025pHMAXIMUM <= 9 SU all year
025Solids, total suspendedINST MAX <= 60 mg/L all year
025Oil & GreaseINST MAX <= 30 mg/L all year
025Flow, in conduit or thru treatment plantDAILY MX report only all year
034pHMINIMUM >= 6 SU all year
034pHMAXIMUM <= 9 SU all year
034Flow, in conduit or thru treatment plantDAILY MX report only all year
107pHMINIMUM >= 6 SU all year
107pHMAXIMUM <= 9 SU all year
107Solids, total suspendedMO AVG report only all year
107Solids, total suspendedDAILY MX report only all year
107Solids, total suspendedMO AVG report only all year
107Solids, total suspendedDAILY MX report only all year
107Oil & GreaseMO AVG <= 15 mg/L all year
107Oil & GreaseDAILY MX report only all year
107Oil & GreaseMO AVG report only all year
107Oil & GreaseDAILY MX report only all year
107Zinc, total [as Zn]MO AVG report only all year
107Aluminum, total [as Al]MO AVG report only all year
107Flow, in conduit or thru treatment plantMO AVG report only all year
207pHMINIMUM >= 6 SU all year
207pHMAXIMUM <= 9 SU all year
207Solids, total suspendedDAILY MX report only all year
207Solids, total suspendedDAILY MX report only all year
207Oil & GreaseDAILY MX report only all year
207Oil & GreaseDAILY MX report only all year
207Flow, in conduit or thru treatment plantDAILY 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