EPA TRI Facility · Fabricated Metals
Diamond Midwest
Michigan City, IN · Parent: Reliance Steel & Aluminum Co
- Total releases
- 75 lbs
- Chemicals reported
- 3
- Carcinogens
- 1
- Primary pathway
- Air Releases
AIR Form-R mix
Diamond Midwest: how the 75 lbs splits
75 lbs across all reported pathways
- Air Releases 75 lbs 100.0%
Diamond Midwest's 75 lbs Form-R total is AIR - air releases is 100.0% of the bar. Off-site transfers stay separate from air, water, and land releases. Leading chemical by pounds: Nickel.
TRACE volume AIR pathway CARC-MID
Diamond Midwest is an EPA Toxics Release Inventory reporter in Michigan City, IN, in the fabricated metals sector. It reported 15 lbs of releases across 3 chemicals in 2023, and 75 lbs in total across its 2019-2023 reporting years. That ranks 16,824 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. Diamond Midwest is pounds #727 and chemical-count #448 at 75 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). Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Hitachi Global Air Power US LLC; Building Materials Manufacturing LLC; Phm Brands LLC; Triplex Plating Co Inc. Similar-scale Fabricated Metals peers outside Indiana: Active Magnetic Inspection Inc.; Deltak Inc.; Chart Industries; Dci Aerotech. Other Reliance Steel & Aluminum Co sites in this extract: Diamond Manufacturing Co; Dubose National Energy Services Inc.. Largest disclosed chemicals by pounds: Nickel; Manganese; Chromium.
Diamond Midwest stamps TRACE volume with a dominant AIR pathway (100.0% air releases) across 3 chemicals · 1 carcinogen-classified. Cumulative Form-R extract: 75 lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Active Magnetic Inspection Inc. and Deltak Inc..
Diamond Midwest vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
75 lbs 35th percentile higher than 35% 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
Diamond Midwest in the Fabricated Metals sector extract
Among the 3,421 Fabricated Metals facilities in this database, Diamond Midwest reports the 2,239th-largest volume (75 lbs). Scale peers outside Indiana include Active Magnetic Inspection Inc. and Deltak Inc..
Sector rank uses reported TRI pounds only. Share callouts need ≥1,000 lbs so tiny totals cannot mint a false signal.
Diamond Midwest Form-R facts
Compare this facility
See how Diamond Midwest stacks up against nearby facilities and the typical reporter.
3.8× more than the comparison
About the same as 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 Diamond Midwest releases toxic chemicals into the environment. Total: 75 lbs.
Emissions Trend Summary
From 2019 to 2023, total releases held roughly flat (15 lbs to 15 lbs).
Diamond Midwest: annual Form-R pounds
TRACE site · AIR pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Diamond Midwest year-over-year reported totals (held roughly flat 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: Nickel.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 15 lbs | 3 |
| 2020 | 15 lbs | 3 |
| 2021 | 15 lbs | 3 |
| 2022 | 15 lbs | 3 |
| 2023 | 15 lbs | 3 |
Diamond Midwest · AIR-pathway site
Nearest TRI Facilities to Diamond Midwest
Closest other reporters in Indiana - including Hitachi Global Air Power US LLC, Building Materials Manufacturing LLC, Phm Brands LLC, ordered by distance.
Showing 8 of 870 other reporting facilities in Indiana.
Similar Fabricated Metals Facilities
Other Fabricated Metals facilities with similar total release volumes (±80%), outside Indiana - e.g. Active Magnetic Inspection Inc., Deltak Inc., Chart Industries.
Other Reliance Steel & Aluminum Co Facilities
Same-parent TRI sites ranked by reported releases - including Diamond Manufacturing Co, Dubose National Energy Services Inc..
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 Nickel, Manganese, Chromium; nearby reporters include Hitachi Global Air Power US LLC. Diamond Midwest stamps TRACE volume · AIR pathway · CARC-MID 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 Diamond Midwest TRI extract (TRACE · AIR · CARC-MID · lead Nickel) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Diamond Midwest totals are self-reported EPCRA §313 estimates for Michigan City, IN, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 332119 · Fabricated Metals. 0.0% of Laporte TRI pounds in this extract. Nearest ABS peer: Active Magnetic Inspection Inc. (Δ 0 lbs). Pounds ≠ exposure.
Diamond Midwest stamps TRACE volume · AIR pathway · CARC-MID · lead Nickel. 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