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Nucor Steel Memphis, Inc.

Blast Furnaces And Steel Mills, Memphis, Tennessee. NPDES permit TN0080403, in force until Dec 31, 2030. Last 12 months: over a limit once (last October 2025), 3 of 42 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form G monthly (1 value), outfall 001 form Q quarterly (8 values), outfall 01A form 2 monthly (10 values), outfall 01A form G monthly (10 values), outfall 001 form Y yearly, outfall SW2 form Y yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 3 of 42 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
October 2025Oil & Grease, monthly average8.11 lb/d≤ 6.89 lb/d18%

Limits in force (38)

ParameterStatisticLimitMonthsOutfall
pHminimum> 6 SUall year001
pHmaximum< 9 SUall year001
Solids, total suspendeddaily maximumreport only (mg/L)all year001
Lead, total [as Pb]daily maximumreport only (mg/L)all year001
Zinc, total [as Zn]daily maximumreport only (mg/L)all year001
Aluminum, total [as Al]daily maximumreport only (mg/L)all year001
Oil and greasedaily maximumreport only (mg/L)all year001
Rainfalltotalreport only (in)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
LC50 Static 48Hr Acute Ceriodaphnia dubiaminimumreport only (% survival)all year001
LC50 Static 48Hr Acute Pimephales promelasminimumreport only (% survival)all year001
pHdaily maximumreport only (SU)all year01A
pHdaily maximumreport only (SU)all year01A
Solids, total suspendedmonthly average≤ 51.4 lb/dall year01A
Solids, total suspendeddaily maximum≤ 140 lb/dall year01A
Solids, total suspendedmonthly average≤ 77.1 lb/dall year01A
Solids, total suspendeddaily maximum≤ 210 lb/dall year01A
Lead, total [as Pb]monthly average≤ .45 lb/dall year01A
Lead, total [as Pb]daily maximum≤ 1.36 lb/dall year01A
Lead, total [as Pb]monthly average≤ .68 lb/dall year01A
Lead, total [as Pb]daily maximum≤ 2.04 lb/dall year01A
Zinc, total [as Zn]monthly average≤ .67 lb/dall year01A
Zinc, total [as Zn]daily maximum≤ 2.04 lb/dall year01A
Zinc, total [as Zn]monthly average≤ 1 lb/dall year01A
Zinc, total [as Zn]daily maximum≤ 3.06 lb/dall year01A
Oil and greasemonthly average≤ 10.9 lb/dall year01A
Oil and greasedaily maximum≤ 32.9 lb/dall year01A
Oil and greasemonthly average≤ 16.4 lb/dall year01A
Oil and greasedaily maximum≤ 49.3 lb/dall year01A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year01A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year01A
pHdaily minimum> 6 SUall yearSW2
pHdaily maximum< 9 SUall yearSW2
Solids, total suspendeddaily maximumreport only (mg/L)all yearSW2
Lead, total [as Pb]daily maximumreport only (mg/L)all yearSW2
Zinc, total [as Zn]daily maximumreport only (mg/L)all yearSW2
Aluminum, total [as Al]daily maximumreport only (mg/L)all yearSW2
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearSW2

Cited limits by parameter: Tennessee's rules and the federal ones.

Same industry: the 12 Primary Metal Industries permits in Tennessee.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TN0080403 · MCP: https://passage-data.com/mcp