EPA TRI Facility · Transportation Equipment
Ducommun Aerostructures
El Mirage, CA
- Total releases
- 294.5K lbs
- Chemicals reported
- 3
- Latest report
- 2023
- Primary pathway
- Off-site Transfers
OFFSITE Form-R mix
Ducommun Aerostructures: how the 294.5K lbs splits
294.5K lbs across all reported pathways
- Off-site Transfers 289.4K lbs 98.3%
- Air Releases 5.1K lbs 1.7%
Ducommun Aerostructures's 294.5K lbs Form-R total is OFFSITE - off-site transfers is 98.3% of the bar. Next segment: air releases at 1.7%. Leading chemical by pounds: Nitrate compounds (water dissociable; reportable only when in aqueous solution).
MID volume OFFSITE pathway CLEAN
Ducommun Aerostructures is an EPA Toxics Release Inventory reporter in El Mirage, CA, in the transportation equipment sector. It reported 53.9K lbs of releases across 3 chemicals in 2023, and 294.5K lbs in total across its 2019-2023 reporting years. That ranks 2,610 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In California's 1,149 reporting TRI sites, pounds #1 is not chemical-count #1. Ducommun Aerostructures is pounds #79 and chemical-count #370 at 294.5K lbs. Clean Harbors Buttonwillow LLC leads reported pounds (50.4M lbs) at 45 chemicals (chemical-count #2). Chevron Products Co Richmond Refinery leads chemical count at 46 chemicals (3.0M lbs, pounds #13). Reported volume rose against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Molded Fiber Glass Co - West; Daniel Mechanical LLC; Adelanto Plant 19; Northwest Pipe Co. Similar-scale Transportation Equipment peers outside California: Design Concepts/marine Concepts; Tidewater Boats LLC; Triton Boats; Dynax America Corp. Largest disclosed chemicals by pounds: Nitrate compounds (water dissociable; reportable only when in aqueous solution); Nitric acid; Hydrogen fluoride.
Compare Ducommun Aerostructures with
Nearest reporters in California
- Molded Fiber Glass Co - West Adelanto · 45.3K lbs
- Daniel Mechanical LLC Adelanto · 133.7K lbs
- Adelanto Plant 19 Adelanto · 37 lbs
- Northwest Pipe Co Adelanto · 26.4K lbs
Similar-scale Transportation Equipment sites elsewhere: Design Concepts/marine Concepts (FL) · Tidewater Boats LLC (SC) · Triton Boats (AR)
Ducommun Aerostructures stamps MID volume with a dominant OFFSITE pathway (98.3% off-site transfers) across 3 chemicals. Cumulative Form-R extract: 294.5K lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Design Concepts/marine Concepts and Tidewater Boats LLC.
Ducommun Aerostructures vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
295K lbs Top 10% higher than 90% 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
Ducommun Aerostructures: Nitrate compounds (water dissociable; reportable only when in aqueous solution)-led volume
Among the 1,603 Transportation Equipment facilities in this database, Ducommun Aerostructures reports the 140th-largest volume, placing it in the top 8.7% of its sector. Its reported volume is concentrated rather than spread: Nitrate compounds (water dissociable; reportable only when in aqueous solution) alone is 98.3% of the total. Scale peers outside California include Design Concepts/marine Concepts and Tidewater Boats LLC.
Concentrated means ≥60% of Ducommun Aerostructures's pounds in one chemical - here Nitrate compounds (water dissociable; reportable only when in aqueous solution) at 98.3%. Not a toxicity score.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Ducommun Aerostructures's total reported releases rose from 53.4 thousand lb in 2022 to 53.9 thousand lb in 2023, based on EPA TRI filings.
- Ducommun Aerostructures's off-site transfers rose from 53.3 thousand lb in 2022 to 53.7 thousand lb in 2023, based on EPA TRI filings.
Ducommun Aerostructures Form-R facts
Compare this facility
See how Ducommun Aerostructures stacks up against nearby facilities and the typical reporter.
6.5× more than the comparison
3.0× 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 Ducommun Aerostructures releases toxic chemicals into the environment. Total: 294.5K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases increased by 1358% (3.7K lbs to 53.9K lbs).
Ducommun Aerostructures: annual Form-R pounds
MID site · OFFSITE pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Ducommun Aerostructures year-over-year reported totals (increased by 1358% 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: Nitrate compounds (water dissociable; reportable only when in aqueous solution).
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 3.7K lbs | 3 |
| 2020 | 93.2K lbs | 3 |
| 2021 | 90.3K lbs | 3 |
| 2022 | 53.4K lbs | 3 |
| 2023 | 53.9K lbs | 3 |
Chemical Releases
Aggregated across all reporting years (2019–2023). Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 289.4K lbs | - |
| Nitric acid | 4.6K lbs | - |
| Hydrogen fluoride | 528 lbs | - |
Ducommun Aerostructures · OFFSITE-pathway site
Nearest TRI Facilities to Ducommun Aerostructures
Closest other reporters in California - including Molded Fiber Glass Co - West, Daniel Mechanical LLC, Adelanto Plant 19, ordered by distance.
Showing 8 of 1,148 other reporting facilities in California.
Similar Transportation Equipment Facilities
Other Transportation Equipment facilities with similar total release volumes (±80%), outside California - e.g. Design Concepts/marine Concepts, Tidewater Boats LLC, Triton Boats.
Compare beyond California
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Ducommun Aerostructures on cumulative reported pounds (294.5K lbs) and distinct chemical count (3). Release-pound peers include Pasadena Refining System Inc, Ati Flat Rolled Products Holdings LLC, Bayer Cropscience LP. Chemical-count peers include Industrial C&s of Pr LLC Arecibo Plant, Island Litho Corp., Fenwal International Inc. 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).
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 Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nitric acid, Hydrogen fluoride; nearby reporters include Molded Fiber Glass Co - West. Ducommun Aerostructures stamps MID volume · OFFSITE pathway · CLEAN 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 Ducommun Aerostructures TRI extract (MID · OFFSITE · CLEAN · lead Nitrate compounds (water dissociable; reportable only when in aqueous solution)) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Ducommun Aerostructures totals are self-reported EPCRA §313 estimates for El Mirage, CA, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 336413 · Transportation Equipment. 4.2% of San Bernardino TRI pounds in this extract. Nearest ABS peer: Anheuser-Busch LLC (Δ 113 lbs). Pounds ≠ exposure.
Ducommun Aerostructures stamps MID volume · OFFSITE pathway · CLEAN · lead Nitrate compounds (water dissociable; reportable only when in aqueous solution). 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