EPA TRI Facility · Primary Metals
Nucor Steel-Darlington
Darlington, SC · Parent: Nucor Corp
- Total releases
- 2.4M lbs
- Chemicals reported
- 14
- Carcinogens
- 3
- Primary pathway
- Off-site Transfers
OFFSITE Form-R mix
Nucor Steel-Darlington: how the 2.4M lbs splits
2.4M lbs across all reported pathways
- Off-site Transfers 2.3M lbs 98.6%
- Air Releases 30.0K lbs 1.3%
- Water Discharges 4.0K lbs 0.2%
- Land Disposal 0 lbs <0.1%
Nucor Steel-Darlington's 2.4M lbs Form-R total is OFFSITE - off-site transfers is 98.6% of the bar. Next segment: air releases at 1.3%. Leading chemical by pounds: Zinc compounds.
Carcinogen-classified pounds vs other reported pounds
Same cumulative TRI total as above, split by EPA/IARC carcinogen classification on each chemical: pounds share, not chemical count. Classification is not a site health-risk score.
HEAVY volume OFFSITE pathway CARC-LEAN
Nucor Steel-Darlington is an EPA Toxics Release Inventory reporter in Darlington, SC, in the primary metals sector. It reported 274.3K lbs of releases across 8 chemicals in 2023, and 2.4M lbs in total across its 2019-2023 reporting years. That ranks 774 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In South Carolina's 574 reporting TRI sites, pounds #1 is not chemical-count #1. Nucor Steel-Darlington is pounds #19 and chemical-count #31 at 2.4M lbs. Oceanagold Haile Gold Mine leads reported pounds (30.2M lbs) at 19 chemicals (chemical-count #14). Giant Cement Co leads chemical count at 90 chemicals (53.3K lbs, pounds #185). Reported volume rose against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Polyquest Inc.; Canfor Southern Pine-Darlington Plant; Stingray Boats; Fiber Industries LLC. Similar-scale Primary Metals peers outside South Carolina: Nucor Steel Seattle Inc; Kaiser Aluminum Warrick LLC; Real Alloy Recycling LLC; Charlotte Pipe & Foundry Co. Other Nucor Corp sites in this extract: Nucor Steel-Berkeley; Nucor Steel Tuscaloosa Inc; Nucor Steel; Nucor Steel Hertford County. Largest disclosed chemicals by pounds: Zinc compounds; Manganese And Manganese Compounds; Copper And Copper Compounds; Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region).
Nucor Steel-Darlington stamps HEAVY volume with a dominant OFFSITE pathway (98.6% off-site transfers) across 14 chemicals · 3 carcinogen-classified. Cumulative Form-R extract: 2.4M lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Nucor Steel Seattle Inc and Kaiser Aluminum Warrick LLC.
Nucor Steel-Darlington vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
2.4M lbs Top 3% higher than 97% of 25,986 reporting TRI facilities
Each bar is a $1M-wide band; taller bars hold more reporting TRI facilities. The dashed line and filled bar mark this facility. Hover, focus, or tap a bar for its full count, share, and position.
Source U.S. Environmental Protection Agency, Toxics Release Inventory · 2023 reporting year
Nucor Steel-Darlington inside Darlington's TRI pounds
Among the 1,603 Primary Metals facilities in this database, Nucor Steel-Darlington reports the 98th-largest volume, placing it in the top 6.1% of its sector. This one site accounts for 47.2% of every pound reported in Darlington. Its reported volume is concentrated rather than spread: Zinc compounds alone is 66.4% of the total. Scale peers outside South Carolina include Nucor Steel Seattle Inc and Kaiser Aluminum Warrick LLC.
County-dominant here means ≥25% of Darlington's reported pounds (5.0M lbs county total). Shares only print when the site reports ≥1,000 lbs.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Nucor Steel-Darlington's total reported releases rose from 261.0 thousand lb in 2022 to 274.3 thousand lb in 2023, based on EPA TRI filings.
- Nucor Steel-Darlington's air releases rose from 4.4 thousand lb in 2022 to 4.7 thousand lb in 2023, based on EPA TRI filings.
- Nucor Steel-Darlington's off-site transfers rose from 255.9 thousand lb in 2022 to 269.0 thousand lb in 2023, based on EPA TRI filings.
Nucor Steel-Darlington Form-R facts
Compare this facility
See how Nucor Steel-Darlington stacks up against nearby facilities and the typical reporter.
3081.3× more than the comparison
14.0× more than the comparison
Comparison reflects reported pounds and chemical counts, not toxicity or health risk. Averages cover facilities reporting any release.
How does this facility release toxic chemicals?
How Nucor Steel-Darlington releases toxic chemicals into the environment. Total: 2.4M lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 45% (500.6K lbs to 274.3K lbs).
Nucor Steel-Darlington: annual Form-R pounds
HEAVY site · OFFSITE pathway · TRI years 2019–2023
- 2019
- 2020
- 2021
- 2022 0
- 2023 0
What this shows Nucor Steel-Darlington year-over-year reported totals (decreased by 45% from 2019 to 2023). TRI figures are self-reported estimates and can swing with production, waste handling, and reporting changes, not only with controls. Lead chemical in the extract: Zinc compounds.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 500.6K lbs | 7 |
| 2020 | 585.9K lbs | 8 |
| 2021 | 733.5K lbs | 8 |
| 2022 | 261.0K lbs | 8 |
| 2023 | 274.3K lbs | 8 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 3 of 14 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Zinc compounds | 1.6M lbs | - |
| Manganese And Manganese Compounds | 498.2K lbs | - |
| Copper And Copper Compounds | 113.4K lbs | - |
| Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) | 66.6K lbs | - |
| Manganese compounds | 28.0K lbs | - |
| Lead compounds | 26.3K lbs | - |
| Nickel And Nickel Compounds | 26.3K lbs | Carcinogen |
| Lead And Lead Compounds | 18.1K lbs | - |
| Copper compounds | 8.1K lbs | - |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 2.9K lbs | - |
| Nickel compounds | 2.1K lbs | Carcinogen |
| Mercury compounds | 366 lbs | - |
| Mercury And Mercury Compounds | 181 lbs | - |
| Dioxin and dioxin-like compounds | 0 lbs | Carcinogen |
Nucor Steel-Darlington · OFFSITE-pathway site
Nearest TRI Facilities to Nucor Steel-Darlington
Closest other reporters in South Carolina - including Polyquest Inc., Canfor Southern Pine-Darlington Plant, Stingray Boats, ordered by distance.
Showing 8 of 573 other reporting facilities in South Carolina.
Similar Primary Metals Facilities
Other Primary Metals facilities with similar total release volumes (±80%), outside South Carolina - e.g. Nucor Steel Seattle Inc, Kaiser Aluminum Warrick LLC, Real Alloy Recycling LLC.
Compare beyond South Carolina
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Nucor Steel-Darlington on cumulative reported pounds (2.4M lbs) and distinct chemical count (14). Release-pound peers include Chevron Phillips Chemical Co LP Sweeny Complex, Duke Energy Florida Llc-Crystal River Power Plant, Nucor Steel Seattle Inc. Chemical-count peers include Shell New Haven Terminal, Chambers Cogeneration L.P., Avantor Performance Materials. Neighborhoods are forced disjoint so each axis surfaces a different set of sites.
Similar reported release pounds
Nearest out-of-state reporters (≥1,000 lbs) by absolute TRI pounds, not same-industry or same-county neighbors.
- Chevron Phillips Chemical Co LP Sweeny Complex Sweeny, TX · Chemicals 2.4M lbs reported
- Duke Energy Florida Llc-Crystal River Power Plant Crystal River, FL · Electric Utilities 2.4M lbs reported
- Nucor Steel Seattle Inc Seattle, WA · Primary Metals 2.4M lbs reported
- Lanxess - West Plant Magnolia, AR · Chemicals 2.4M lbs reported
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
Other Nucor Corp Facilities
Same-parent TRI sites ranked by reported releases - including Nucor Steel-Berkeley, Nucor Steel Tuscaloosa Inc, Nucor Steel.
About TRI Data
Data as of 2023 reporting year. Source: U.S. Environmental Protection Agency (EPA) Toxic Release Inventory.
On this page the largest disclosed chemicals include Zinc compounds, Manganese And Manganese Compounds, Copper And Copper Compounds, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region); nearby reporters include Polyquest Inc.. Nucor Steel-Darlington stamps HEAVY volume · OFFSITE pathway · CARC-LEAN carcinogen-lbs on this Form-R extract. Totals are self-reported estimates under EPCRA §313, not measured stack emissions or a health-risk score.
Use and verify this record
This Nucor Steel-Darlington TRI extract (HEAVY · OFFSITE · CARC-LEAN · lead Zinc compounds) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Nucor Steel-Darlington totals are self-reported EPCRA §313 estimates for Darlington, SC, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 331110 · Primary Metals. 47.2% of Darlington TRI pounds in this extract. Nearest ABS peer: Chevron Phillips Chemical Co LP Sweeny Complex (Δ 6.7K lbs). Pounds ≠ exposure.
Nucor Steel-Darlington stamps HEAVY volume · OFFSITE pathway · CARC-LEAN · lead Zinc compounds. PlainEnviro renders this EPA Form-R extract from its pipeline; no figure is typed in by an editor. Corrections: editorial policy.
All federal data sources used on this page
- EPA Toxics Release Inventory (TRI) Basic Data Files - annual self-reported chemical-release filings. epa.gov
- EPA TRI Program reference - how chemicals and reported releases are counted. epa.gov
- EPA Facility Registry Service - facility location and identity. epa.gov
- EPA ECHO - regulatory and compliance context. epa.gov
- EPA Envirofacts - the EPA data warehouse exposing these datasets. epa.gov