EPA TRI Facility · Primary Metals
US Steel Corp Midwest Plant
Portage, IN · Parent: US Steel Corp
- Total releases
- 1.7M lbs
- Chemicals reported
- 8
- Carcinogens
- 1
- Primary pathway
- Off-site Transfers
OFFSITE Form-R mix
US Steel Corp Midwest Plant: how the 1.7M lbs splits
1.7M lbs across all reported pathways
- Off-site Transfers 1.7M lbs 96.3%
- Land Disposal 36.5K lbs 2.1%
- Water Discharges 22.3K lbs 1.3%
- Air Releases 4.7K lbs 0.3%
US Steel Corp Midwest Plant's 1.7M lbs Form-R total is OFFSITE - off-site transfers is 96.3% of the bar. Next segment: land disposal at 2.1%. Leading chemical by pounds: Chromium compounds (except for chromite ore mined in the Transvaal Region).
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 TRACE-CARC
US Steel Corp Midwest Plant is an EPA Toxics Release Inventory reporter in Portage, IN, in the primary metals sector. It reported 189.8K lbs of releases across 8 chemicals in 2023, and 1.7M lbs in total across its 2019-2023 reporting years. That ranks 936 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Indiana's 871 reporting TRI sites, pounds #1 is not chemical-count #1. US Steel Corp Midwest Plant is pounds #42 and chemical-count #95 at 1.7M lbs. Uss Gary Works leads reported pounds (77.4M lbs) at 36 chemicals (chemical-count #9). Tradebe Treatment & Recycling LLC leads chemical count at 98 chemicals (11.9M lbs, pounds #12). Reported volume rose against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Pvs Technologies Inc.; Sequa Coatings Corp-Precoat Metals Div; Nlmk Indiana; Monosol - Duneland Plant. Similar-scale Primary Metals peers outside Indiana: Nucor Steel Kankakee Inc; Novelis Corp-Greensboro; Nucor Steel Memphis Inc; Pcc Structurals Inc Large Parts Campus. Other US Steel Corp sites in this extract: Uss Gary Works; Uss Mon Valley Works - Edgar Thomson Plant; Uss-Clairton Plant; U.S. Steel Granite City Works. Largest disclosed chemicals by pounds: Chromium compounds (except for chromite ore mined in the Transvaal Region); Manganese; Zinc compounds; Nitrate compounds (water dissociable; reportable only when in aqueous solution).
US Steel Corp Midwest Plant stamps HEAVY volume with a dominant OFFSITE pathway (96.3% off-site transfers) across 8 chemicals · 1 carcinogen-classified. Cumulative Form-R extract: 1.7M 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 Kankakee Inc and Novelis Corp-Greensboro.
US Steel Corp Midwest Plant vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
1.7M lbs Top 4% higher than 96% 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
US Steel Corp Midwest Plant: Chromium compounds (except for chromite ore mined in the Transvaal Region)-led volume
Among the 1,603 Primary Metals facilities in this database, US Steel Corp Midwest Plant reports the 115th-largest volume, placing it in the top 7.2% of its sector. Its reported volume is concentrated rather than spread: Chromium compounds (except for chromite ore mined in the Transvaal Region) alone is 96.0% of the total. Scale peers outside Indiana include Nucor Steel Kankakee Inc and Novelis Corp-Greensboro.
Concentrated means ≥60% of US Steel Corp Midwest Plant's pounds in one chemical - here Chromium compounds (except for chromite ore mined in the Transvaal Region) at 96.0%. Not a toxicity score.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- US Steel Corp Midwest Plant's total reported releases rose from 164.0 thousand lb in 2022 to 189.8 thousand lb in 2023, based on EPA TRI filings.
- US Steel Corp Midwest Plant's air releases rose from 46 lb in 2022 to 4.5 thousand lb in 2023, based on EPA TRI filings.
- US Steel Corp Midwest Plant's off-site transfers rose from 144.8 thousand lb in 2022 to 166.8 thousand lb in 2023, based on EPA TRI filings.
- US Steel Corp Midwest Plant's chemicals reported rose from 7 in 2022 to 8 in 2023, based on EPA TRI filings.
US Steel Corp Midwest Plant Form-R facts
Compare this facility
See how US Steel Corp Midwest Plant stacks up against nearby facilities and the typical reporter.
22.9× more than the comparison
2.7× 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 US Steel Corp Midwest Plant releases toxic chemicals into the environment. Total: 1.7M lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 60% (477.1K lbs to 189.8K lbs).
US Steel Corp Midwest Plant: annual Form-R pounds
HEAVY site · OFFSITE pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows US Steel Corp Midwest Plant year-over-year reported totals (decreased by 60% 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: Chromium compounds (except for chromite ore mined in the Transvaal Region).
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 477.1K lbs | 5 |
| 2020 | 429.9K lbs | 5 |
| 2021 | 476.3K lbs | 5 |
| 2022 | 164.0K lbs | 7 |
| 2023 | 189.8K lbs | 8 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 1 of 8 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 1.7M lbs | - |
| Manganese | 42.0K lbs | - |
| Zinc compounds | 8.9K lbs | - |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 8.5K lbs | - |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 4.4K lbs | - |
| Nickel | 4.1K lbs | Carcinogen |
| Lead And Lead Compounds | 714 lbs | - |
| Sodium nitrite | 0 lbs | - |
US Steel Corp Midwest Plant · OFFSITE-pathway site
Nearest TRI Facilities to US Steel Corp Midwest Plant
Closest other reporters in Indiana - including Pvs Technologies Inc., Sequa Coatings Corp-Precoat Metals Div, Nlmk Indiana, ordered by distance.
Showing 8 of 870 other reporting facilities in Indiana.
Similar Primary Metals Facilities
Other Primary Metals facilities with similar total release volumes (±80%), outside Indiana - e.g. Nucor Steel Kankakee Inc, Novelis Corp-Greensboro, Nucor Steel Memphis Inc.
Compare beyond Indiana
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest US Steel Corp Midwest Plant on cumulative reported pounds (1.7M lbs) and distinct chemical count (8). Release-pound peers include Perdue Foods LLC - Accomac Processing Plant, Emerald Services Inc., Fiore Gold Pan Mine. Chemical-count peers include Prepa-South Coast Power Plant, Argos Puerto Rico Corp., US Tsubaki Automotive 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.
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
Other US Steel Corp Facilities
Same-parent TRI sites ranked by reported releases - including Uss Gary Works, Uss Mon Valley Works - Edgar Thomson Plant, Uss-Clairton Plant.
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 Chromium compounds (except for chromite ore mined in the Transvaal Region), Manganese, Zinc compounds, Nitrate compounds (water dissociable; reportable only when in aqueous solution); nearby reporters include Pvs Technologies Inc.. US Steel Corp Midwest Plant stamps HEAVY volume · OFFSITE pathway · TRACE-CARC 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 US Steel Corp Midwest Plant TRI extract (HEAVY · OFFSITE · TRACE-CARC · lead Chromium compounds (except for chromite ore mined in the Transvaal Region)) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
US Steel Corp Midwest Plant totals are self-reported EPCRA §313 estimates for Portage, IN, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 331221 · Primary Metals. 4.5% of Porter TRI pounds in this extract. Nearest ABS peer: Perdue Foods LLC - Accomac Processing Plant (Δ 3.8K lbs). Pounds ≠ exposure.
US Steel Corp Midwest Plant stamps HEAVY volume · OFFSITE pathway · TRACE-CARC · lead Chromium compounds (except for chromite ore mined in the Transvaal Region). 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