EPA TRI Facility · Primary Metals
Steel Dynamics Inc Flat Roll Group Columbus Div
Columbus, MS · Parent: Steel Dynamics Inc
- Total releases
- 972.0K lbs
- Chemicals reported
- 29
- Carcinogens
- 7
- Primary pathway
- Off-site Transfers
MIXED Form-R mix
Steel Dynamics Inc Flat Roll Group Columbus Div: how the 972.0K lbs splits
972.0K lbs across all reported pathways
- Off-site Transfers 679.5K lbs 69.9%
- Air Releases 288.1K lbs 29.6%
- Water Discharges 4.4K lbs 0.5%
- Land Disposal 0 lbs <0.1%
Steel Dynamics Inc Flat Roll Group Columbus Div's 972.0K lbs Form-R total is MIXED - off-site transfers is 69.9% of the bar. Next segment: air releases at 29.6%. 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.
MID volume MIXED pathway CARC-LEAN
Steel Dynamics Inc Flat Roll Group Columbus Div is an EPA Toxics Release Inventory reporter in Columbus, MS, in the primary metals sector. It reported 112.7K lbs of releases across 21 chemicals in 2023, and 972.0K lbs in total across its 2019-2023 reporting years. That ranks 1,330 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Mississippi's 328 reporting TRI sites, pounds #1 is not chemical-count #1. Steel Dynamics Inc Flat Roll Group Columbus Div is pounds #27 and chemical-count #3 at 972.0K lbs. Tronox LLC leads reported pounds (64.0M lbs) at 17 chemicals (chemical-count #12). Chevron Products Co Pascagoula Refinery leads chemical count at 46 chemicals (7.4M lbs, pounds #9). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Golden Triangle Mill Service; Columbus Roll Shop; Primetals Technologies USA LLC; Delta Industries Inc - Plant 41. Similar-scale Primary Metals peers outside Mississippi: Asahi Refining USA Inc; Nucor Steel Marion Inc; Lee Brass; Grede Foundries. Other Steel Dynamics Inc sites in this extract: Steel Dynamics Inc-Flat Roll Div; Steel Dynamics Inc-Engineered Bar Products Div; Sdi Lafarga LLC; Steel Dynamics Inc Structural & Rail Div. Largest disclosed chemicals by pounds: Zinc compounds; Lithium carbonate; Manganese And Manganese Compounds; Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region).
Steel Dynamics Inc Flat Roll Group Columbus Div is a MID · MIXED-pathway Form-R site in Columbus, MS: 972.0K lbs across 29 chemicals (7 carcinogen-classified, CARC-LEAN). No single media clears 70% of the bar (lead segment off-site transfers at 69.9%). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Asahi Refining USA Inc and Nucor Steel Marion Inc.
Steel Dynamics Inc Flat Roll Group Columbus Div vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
972K lbs Top 5% higher than 95% 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
Steel Dynamics Inc Flat Roll Group Columbus Div in the Primary Metals sector extract
Among the 1,603 Primary Metals facilities in this database, Steel Dynamics Inc Flat Roll Group Columbus Div reports the 146th-largest volume, placing it in the top 9.1% of its sector. Scale peers outside Mississippi include Asahi Refining USA Inc and Nucor Steel Marion Inc.
Sector rank uses reported TRI pounds only. Share callouts need ≥1,000 lbs so tiny totals cannot mint a false signal.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Steel Dynamics Inc Flat Roll Group Columbus Div's total reported releases fell from 117.4 thousand lb in 2022 to 112.7 thousand lb in 2023, based on EPA TRI filings.
- Steel Dynamics Inc Flat Roll Group Columbus Div's water releases rose from 246 lb in 2022 to 298 lb in 2023, based on EPA TRI filings.
- Steel Dynamics Inc Flat Roll Group Columbus Div's off-site transfers fell from 65.3 thousand lb in 2022 to 61.2 thousand lb in 2023, based on EPA TRI filings.
- Steel Dynamics Inc Flat Roll Group Columbus Div's chemicals reported fell from 22 in 2022 to 21 in 2023, based on EPA TRI filings.
Steel Dynamics Inc Flat Roll Group Columbus Div Form-R facts
Compare this facility
See how Steel Dynamics Inc Flat Roll Group Columbus Div stacks up against nearby facilities and the typical reporter.
708.8× more than the comparison
4.8× 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 Steel Dynamics Inc Flat Roll Group Columbus Div releases toxic chemicals into the environment. Total: 972.0K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 48% (218.5K lbs to 112.7K lbs).
Steel Dynamics Inc Flat Roll Group Columbus Div: annual Form-R pounds
MID site · MIXED pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Steel Dynamics Inc Flat Roll Group Columbus Div year-over-year reported totals (decreased by 48% 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 | 218.5K lbs | 21 |
| 2020 | 309.2K lbs | 21 |
| 2021 | 214.1K lbs | 22 |
| 2022 | 117.4K lbs | 22 |
| 2023 | 112.7K lbs | 21 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 7 of 29 chemicals are carcinogens. Sorted by total release volume.
Steel Dynamics Inc Flat Roll Group Columbus Div in Lowndes
Nearest TRI Facilities to Steel Dynamics Inc Flat Roll Group Columbus Div
Closest other reporters in Mississippi - including Golden Triangle Mill Service, Columbus Roll Shop, Primetals Technologies USA LLC, ordered by distance.
Showing 8 of 327 other reporting facilities in Mississippi.
Similar Primary Metals Facilities
Other Primary Metals facilities with similar total release volumes (±80%), outside Mississippi - e.g. Asahi Refining USA Inc, Nucor Steel Marion Inc, Lee Brass.
Compare beyond Mississippi
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Steel Dynamics Inc Flat Roll Group Columbus Div on cumulative reported pounds (972.0K lbs) and distinct chemical count (29). Release-pound peers include U.S. Ceramics, Solar Sources Mining LLC Antioch Preparation Facility, Day International Inc. Chemical-count peers include Harrison Power Station, Pcs Phosphate Co Inc, Blue Ridge Paper Products LLC. 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.
- U.S. Ceramics Wrens, GA · Other 972.0K lbs reported
- Solar Sources Mining LLC Antioch Preparation Facility Montgomery, IN · Coal Mining 972.9K lbs reported
- Day International Inc Arden, NC · Plastics and Rubber 970.2K lbs reported
- Amcor Flexibles N.a. Terre Haute, IN · Plastics and Rubber 973.9K lbs reported
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
Other Steel Dynamics Inc Facilities
Same-parent TRI sites ranked by reported releases - including Steel Dynamics Inc-Flat Roll Div, Steel Dynamics Inc-Engineered Bar Products Div, Sdi Lafarga LLC.
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, Lithium carbonate, Manganese And Manganese Compounds, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region); nearby reporters include Golden Triangle Mill Service. Steel Dynamics Inc Flat Roll Group Columbus Div stamps MID volume · MIXED 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 Steel Dynamics Inc Flat Roll Group Columbus Div TRI extract (MID · MIXED · CARC-LEAN · lead Zinc compounds) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Steel Dynamics Inc Flat Roll Group Columbus Div totals are self-reported EPCRA §313 estimates for Columbus, MS, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 331110 · Primary Metals. 8.2% of Lowndes TRI pounds in this extract. Nearest ABS peer: U.S. Ceramics (Δ 27 lbs). Pounds ≠ exposure.
Steel Dynamics Inc Flat Roll Group Columbus Div stamps MID · MIXED pathway (off-site transfers leads at 69.9%). Pipeline-rendered EPA Form-R only - no editor-typed pounds. 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