Nucor Steel Marion

NPDES permit OH0138789 · Minor NON-POTW · effective, expires 2028-08-31 · 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 22 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 (44)

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 methodDAILY MX <= 10 mg/L all year
001Iron, total recoverableMO AVG report only all year
001Iron, total recoverableDAILY MX report only all year
001Nickel, total recoverableMO AVG report only all year
001Nickel, total recoverableDAILY MX report only all year
001Zinc, total recoverableMO AVG report only all year
001Zinc, total recoverableDAILY MX report only all year
001Aluminum, total recoverableMO AVG report only all year
001Aluminum, total recoverableDAILY MX report only all year
001Cadmium, total recoverableMO AVG report only all year
001Cadmium, total recoverableDAILY MX report only all year
001Lead, total recoverableMO AVG report only all year
001Lead, total recoverableDAILY MX report only all year
001Chromium, total recoverableMO AVG report only all year
001Chromium, total recoverableDAILY MX report only all year
001Copper, total recoverableMO AVG report only all year
001Copper, total recoverableDAILY 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
001Mercury, total low levelMO AVG <= 12 ng/L all year
001Mercury, total low levelDAILY MX <= 1700 ng/L all year
006pHDAILY MN >= 6.5 SU all year
006pHDAILY MX <= 9 SU all year
006Solids, total suspendedMO AVG <= 30 mg/L all year
006Solids, total suspendedDAILY MX <= 45 mg/L all year
006Oil and grease, hexane extr methodDAILY MX <= 10 mg/L all year
006Iron, total recoverableMO AVG report only all year
006Iron, total recoverableDAILY MX report only all year
006Nickel, total recoverableMO AVG report only all year
006Nickel, total recoverableDAILY MX report only all year
006Cadmium, total recoverableMO AVG report only all year
006Cadmium, total recoverableDAILY MX report only all year
006Lead, total recoverableDAILY MX <= 490 ug/L all year
006Chromium, total recoverableMO AVG report only all year
006Chromium, total recoverableDAILY MX report only all year
006Copper, total recoverableDAILY MX <= 39 ug/L all year
006Flow, in conduit or thru treatment plantMO AVG report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
006Mercury, total low levelMO AVG <= 12 ng/L all year
006Mercury, total low levelDAILY MX <= 1700 ng/L 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