EPA TRI Facility · Primary Metals
Doncasters Inc Precision Castings New England
Groton, CT · Parent: Doncasters Ltd
- Total releases
- 2.8K lbs
- Chemicals reported
- 3
- Carcinogens
- 2
- Primary pathway
- Air Releases
AIR Form-R mix
Doncasters Inc Precision Castings New England: how the 2.8K lbs splits
2.8K lbs across all reported pathways
- Air Releases 2.6K lbs 93.6%
- Water Discharges 90 lbs 3.2%
- Off-site Transfers 90 lbs 3.2%
Doncasters Inc Precision Castings New England's 2.8K lbs Form-R total is AIR - air releases is 93.6% of the bar. Next segment: water discharges at 3.2%. Leading chemical by pounds: Nickel.
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.
LIGHT volume AIR pathway CARC-HEAVY
Doncasters Inc Precision Castings New England is an EPA Toxics Release Inventory reporter in Groton, CT, in the primary metals sector. It reported 50 lbs of releases across 3 chemicals in 2024, and 2.8K lbs in total across its 2019-2024 reporting years. That ranks 12,268 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Connecticut's 240 reporting TRI sites, pounds #1 is not chemical-count #1. Doncasters Inc Precision Castings New England is pounds #119 and chemical-count #91 at 2.8K lbs. Clean Harbors of Connecticut Inc leads reported pounds (1.5M lbs) at 15 chemicals (chemical-count #2). Allnex USA Inc. Wallingford Ct Site leads chemical count at 19 chemicals (436.7K lbs, pounds #3). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Pcc Structurals; Electric Boat Corp; Sheffield Pharmaceuticals LLC; US Dod-Naval Submarine Base New London. Similar-scale Primary Metals peers outside Connecticut: Milward Alloys Inc; Cascade Die Casting/atlantic; Oerlikon Metco (us) Troy/oerlikon Metco (us) Troy; Certified Alloy Products Inc. Other Doncasters Ltd sites in this extract: Doncasters Trucast Inc; Doncasters Storms Forge. Largest disclosed chemicals by pounds: Nickel; Cobalt; Chromium.
Doncasters Inc Precision Castings New England stamps LIGHT volume with a dominant AIR pathway (93.6% air releases) across 3 chemicals · 2 carcinogen-classified. Cumulative Form-R extract: 2.8K lbs (2019–2024). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Milward Alloys Inc and Cascade Die Casting/atlantic.
Doncasters Inc Precision Castings New England vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
2.8K lbs Top 47% higher than 53% 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
Doncasters Inc Precision Castings New England: carcinogen-lbs share on Form-R
Among the 1,603 Primary Metals facilities in this database, Doncasters Inc Precision Castings New England reports the 921st-largest volume (2.8K lbs). Carcinogen-classified chemicals make up 69.8% of the reported pounds, not just of the chemical count. Scale peers outside Connecticut include Milward Alloys Inc and Cascade Die Casting/atlantic.
Carcinogen-heavy means ≥50% of pounds (69.8% here), not of chemical count. EPA/IARC classification ≠ site risk.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Doncasters Inc Precision Castings New England's total reported releases fell from 305 lb in 2022 to 60 lb in 2023, based on EPA TRI filings.
- Doncasters Inc Precision Castings New England's air releases fell from 275 lb in 2022 to 30 lb in 2023, based on EPA TRI filings.
Doncasters Inc Precision Castings New England Form-R facts
Compare this facility
See how Doncasters Inc Precision Castings New England stacks up against nearby facilities and the typical reporter.
53% less than the comparison
25% less 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 Doncasters Inc Precision Castings New England releases toxic chemicals into the environment. Total: 2.8K lbs.
Emissions Trend Summary
From 2019 to 2024, total releases decreased by 94% (795 lbs to 50 lbs).
Doncasters Inc Precision Castings New England: annual Form-R pounds
LIGHT site · AIR pathway · TRI years 2019–2024
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
- 2024 0
What this shows Doncasters Inc Precision Castings New England year-over-year reported totals (decreased by 94% from 2019 to 2024). 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 | 795 lbs | 3 |
| 2020 | 795 lbs | 3 |
| 2021 | 795 lbs | 3 |
| 2022 | 305 lbs | 3 |
| 2023 | 60 lbs | 3 |
| 2024 | 50 lbs | 3 |
Doncasters Inc Precision Castings New England · AIR-pathway site
Nearest TRI Facilities to Doncasters Inc Precision Castings New England
Closest other reporters in Connecticut - including Pcc Structurals, Electric Boat Corp, Sheffield Pharmaceuticals LLC, ordered by distance.
Showing 8 of 239 other reporting facilities in Connecticut.
Similar Primary Metals Facilities
Other Primary Metals facilities with similar total release volumes (±80%), outside Connecticut - e.g. Milward Alloys Inc, Cascade Die Casting/atlantic, Oerlikon Metco (us) Troy/oerlikon Metco (us) Troy.
Compare beyond Connecticut
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Doncasters Inc Precision Castings New England on cumulative reported pounds (2.8K lbs) and distinct chemical count (3). Release-pound peers include Usalco Baltimore Plant LLC, Columbia Paint Corp, Fiber Industries LLC. 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).
Other Doncasters Ltd Facilities
Same-parent TRI sites ranked by reported releases - including Doncasters Trucast Inc, Doncasters Storms Forge.
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, Cobalt, Chromium; nearby reporters include Pcc Structurals. Doncasters Inc Precision Castings New England stamps LIGHT volume · AIR pathway · CARC-HEAVY 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 Doncasters Inc Precision Castings New England TRI extract (LIGHT · AIR · CARC-HEAVY · lead Nickel) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Doncasters Inc Precision Castings New England totals are self-reported EPCRA §313 estimates for Groton, CT, latest year 2023. Form-R rows span 2019–2024 (6 years). NAICS 331512 · Primary Metals. 0.9% of New London TRI pounds in this extract. Nearest ABS peer: Columbia Paint Corp (Δ 0 lbs). Pounds ≠ exposure.
Doncasters Inc Precision Castings New England stamps LIGHT volume · AIR pathway · CARC-HEAVY · 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