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Nucor Corporation

Miscellaneous Nonmetallic Minerals, Darlington, South Carolina. NPDES permit SC0048283 expired May 31, 2021; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 29 days after each period: form 1 monthly (26 values), form 2 yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 13 reports late

Limits in force (28)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year
BOD, 5-day, 20 deg. Cdaily maximumreport only (lb/d)all year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 8.5 SUall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspendedmonthly average≤ 77 lb/dall year
Solids, total suspendeddaily maximum≤ 172 lb/dall year
Oil & Greasemonthly averagereport only (mg/L)all year
Oil & Greasedaily maximumreport only (mg/L)all year
Oil & Greasemonthly average≤ 22 lb/dall year
Oil & Greasedaily maximum≤ 49 lb/dall year
Lead, total [as Pb]monthly averagereport only (mg/L)all year
Lead, total [as Pb]daily maximumreport only (mg/L)all year
Lead, total [as Pb]monthly average≤ .19 lb/dall year
Lead, total [as Pb]daily maximum≤ .44 lb/dall year
Zinc, total [as Zn]monthly averagereport only (mg/L)all year
Zinc, total [as Zn]daily maximumreport only (mg/L)all year
Zinc, total [as Zn]monthly average≤ .29 lb/dall year
Zinc, total [as Zn]daily maximum≤ .66 lb/dall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly averagereport only (mg/L)all year
Chlorine, total residualdaily maximumreport only (mg/L)all year
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly averagereport only (%)all year
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximumreport only (%)all year

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

Same industry: the 6 Mining and Quarrying of Nonmetallic Minerals permits in South Carolina.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/SC0048283 · MCP: https://passage-data.com/mcp