Dunkirk Specialty Steel LLC – Emissions Trend
Dunkirk, NY · 2019–2024 · Parent: Universal Stainless & Alloy Products Inc
This page assembles 6 consecutive years of EPA Toxics Release Inventory Form R filings for Dunkirk Specialty Steel LLC, spanning 2019–2024. Each annual total aggregates on-site air emissions, surface-water discharges, land disposal, and off-site transfers reported by the facility under EPCRA Section 313, which requires disclosure whenever a listed chemical is manufactured, processed, or otherwise used above threshold quantities.
Reported releases opened at 49.4K in 2019 and closed at 11.0K in 2024 – a decrease of 77.6% over the window. The chart below stacks the four TRI release media (air, water, land, off-site) and overlays the yearly total. The top contributor by cumulative mass is Chromium at 59.4K, followed by Nickel at 31.4K.
Because TRI figures are estimated, not metered, year-over-year deltas can reflect methodology revisions, ownership changes, or shifts in what a facility classifies as reportable, not only physical emission changes. Treat the trajectory as a disclosure record, and cross-reference with the EPA Enforcement and Compliance History Online (ECHO) system for the fuller regulatory picture on this primary metals facility.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Dunkirk Specialty Steel LLC's total reported releases rose from 5.8 thousand lb in 2022 to 14.4 thousand lb in 2023, based on EPA TRI filings.
- Dunkirk Specialty Steel LLC's off-site transfers rose from 5.5 thousand lb in 2022 to 14.0 thousand lb in 2023, based on EPA TRI filings.
- Dunkirk Specialty Steel LLC's air releases rose from 253 lb in 2022 to 356 lb in 2023, based on EPA TRI filings.
Total Releases by Category
Year-over-Year Comparison
| Year | Total | Chemicals | YoY Change |
|---|---|---|---|
| 2019 | 49.4K lbs | 6 | - |
| 2020 | 24.1K lbs | 6 | -51.3% |
| 2021 | 9.1K lbs | 6 | -62.3% |
| 2022 | 5.8K lbs | 6 | -36.2% |
| 2023 | 14.4K lbs | 6 | +148.4% |
| 2024 | 11.0K lbs | 6 | -23.2% |
Top Chemicals by Year
| Chemical | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | Total |
|---|---|---|---|---|---|---|---|
| Chromium | 29.3K | 13.7K | 3.7K | 2.2K | 5.9K | 4.5K | 59.4K |
| Nickel | 14.6K | 6.9K | 2.2K | 1.4K | 3.5K | 2.7K | 31.4K |
| Manganese | 2.8K | 1.4K | 2.0K | 1.3K | 3.2K | 2.5K | 13.3K |
| Copper | 1.7K | 921 | 993 | 683 | 1.5K | 1.2K | 6.9K |
| Nitric acid | 1.0K | 1.1K | 126 | 126 | 204 | 126 | 2.7K |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | - | - | - | - | - | - | 0 |
About This Data
Trend data is sourced from the EPA Toxic Release Inventory (TRI). Facilities report annually. Release quantities are self-reported estimates. Year-over-year changes may reflect changes in production, pollution control measures, reporting methodology, or chemical thresholds.
A decrease in reported releases does not necessarily indicate improved environmental performance, as it may reflect production cutbacks, facility closures, or changes in reporting requirements. Similarly, increases may reflect expanded production rather than degraded environmental practices.
Frequently Asked Questions
Is Dunkirk Specialty Steel LLC getting cleaner or dirtier? ▼
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Read our methodology - how this data is sourced, computed, and verified.