EPA TRI Facility · Primary Metals
Sierra Aluminum Co Plant II
Fontana, CA · Parent: Sierra Aluminum Co
- Total releases
- 390.8K lbs
- Chemicals reported
- 9
- Carcinogens
- 3
- Primary pathway
- Off-site Transfers
OFFSITE Form-R mix
Sierra Aluminum Co Plant II: how the 390.8K lbs splits
390.8K lbs across all reported pathways
- Off-site Transfers 373.6K lbs 95.6%
- Air Releases 17.3K lbs 4.4%
- Water Discharges 5 lbs <0.1%
Sierra Aluminum Co Plant II's 390.8K lbs Form-R total is OFFSITE - off-site transfers is 95.6% of the bar. Next segment: air releases at 4.4%. Leading chemical by pounds: Xylene (mixed isomers).
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.
MID volume OFFSITE pathway CARC-LEAN
Sierra Aluminum Co Plant II is an EPA Toxics Release Inventory reporter in Fontana, CA, in the primary metals sector. It reported 8.6K lbs of releases across 7 chemicals in 2023, and 390.8K lbs in total across its 2019-2023 reporting years. That ranks 2,238 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. Sierra Aluminum Co Plant II is pounds #64 and chemical-count #89 at 390.8K 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 fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Building Materials Manufacturing LLC; Chemicals Inc; Tst Inc. DBA Timco DBA Tande M Industries; Metal Container Corp-Mira Loma Can Plant. Similar-scale Primary Metals peers outside California: Cannon-Muskegon; Victaulic Co - Alburtis Facility; Sanoh America Inc. Archbold; Timkensteel Corp-Faircrest Steel Plant. Largest disclosed chemicals by pounds: Xylene (mixed isomers); Ethylbenzene; Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region); Certain glycol ethers.
Sierra Aluminum Co Plant II stamps MID volume with a dominant OFFSITE pathway (95.6% off-site transfers) across 9 chemicals · 3 carcinogen-classified. Cumulative Form-R extract: 390.8K lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Cannon-Muskegon and Victaulic Co - Alburtis Facility.
Sierra Aluminum Co Plant II vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
391K lbs Top 9% higher than 91% 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
Sierra Aluminum Co Plant II: Xylene (mixed isomers)-led volume
Among the 1,603 Primary Metals facilities in this database, Sierra Aluminum Co Plant II reports the 237th-largest volume, placing it in the top 14.8% of its sector. Its reported volume is concentrated rather than spread: Xylene (mixed isomers) alone is 71.1% of the total. Scale peers outside California include Cannon-Muskegon and Victaulic Co - Alburtis Facility.
Concentrated means ≥60% of Sierra Aluminum Co Plant II's pounds in one chemical - here Xylene (mixed isomers) at 71.1%. Not a toxicity score.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Sierra Aluminum Co Plant II's total reported releases fell from 297.1 thousand lb in 2022 to 8.6 thousand lb in 2023, based on EPA TRI filings.
- Sierra Aluminum Co Plant II's off-site transfers fell from 294.9 thousand lb in 2022 to 7.3 thousand lb in 2023, based on EPA TRI filings.
- Sierra Aluminum Co Plant II's air releases fell from 2.2 thousand lb in 2022 to 1.3 thousand lb in 2023, based on EPA TRI filings.
- Sierra Aluminum Co Plant II's chemicals reported fell from 9 in 2022 to 7 in 2023, based on EPA TRI filings.
Sierra Aluminum Co Plant II Form-R facts
Compare this facility
See how Sierra Aluminum Co Plant II stacks up against nearby facilities and the typical reporter.
67001.6× more than the comparison
80% 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 Sierra Aluminum Co Plant II releases toxic chemicals into the environment. Total: 390.8K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 22% (11.0K lbs to 8.6K lbs).
Sierra Aluminum Co Plant II: 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 Sierra Aluminum Co Plant II year-over-year reported totals (decreased by 22% 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: Xylene (mixed isomers).
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 11.0K lbs | 8 |
| 2020 | 29.7K lbs | 8 |
| 2021 | 44.3K lbs | 8 |
| 2022 | 297.1K lbs | 9 |
| 2023 | 8.6K lbs | 7 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 3 of 9 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Xylene (mixed isomers) | 277.9K lbs | - |
| Ethylbenzene | 83.7K lbs | Carcinogen |
| Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) | 20.2K lbs | - |
| Certain glycol ethers | 5.9K lbs | - |
| Toluene | 2.7K lbs | - |
| Ethyl acrylate | 233 lbs | Carcinogen |
| 1-Propanesulfonic acid, 2-methyl-, 2-[[1-oxo-3-[(γ-ω-perfluoro-C4-16-alkyl)thio]propyl]amino] derivs., sodium salts | 80 lbs | - |
| Lead | 74 lbs | Carcinogen |
| Hydrogen fluoride | 0 lbs | - |
Sierra Aluminum Co Plant II · OFFSITE-pathway site
Nearest TRI Facilities to Sierra Aluminum Co Plant II
Closest other reporters in California - including Building Materials Manufacturing LLC, Chemicals Inc, Tst Inc. DBA Timco DBA Tande M Industries, ordered by distance.
Showing 8 of 1,148 other reporting facilities in California.
Similar Primary Metals Facilities
Other Primary Metals facilities with similar total release volumes (±80%), outside California - e.g. Cannon-Muskegon, Victaulic Co - Alburtis Facility, Sanoh America Inc. Archbold.
Compare beyond California
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Sierra Aluminum Co Plant II on cumulative reported pounds (390.8K lbs) and distinct chemical count (9). Release-pound peers include Oxy Vinyls LP la Porte Vcm Plant, Linde Inc, Contitech USA LLC. Chemical-count peers include Viatris Pharmaceuticals LLC, Prepa - San Juan Steam Plant, Solutia 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).
- Viatris Pharmaceuticals LLC Barceloneta, PR · Chemicals 9 chemicals
- Prepa - San Juan Steam Plant Puerto Nuevo, PR · Electric Utilities 9 chemicals
- Solutia Inc Springfield, MA · Plastics and Rubber 9 chemicals
- O'Connell Oil Co Merrill Road Facility Pittsfield, MA · Petroleum Bulk Terminals 9 chemicals
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 Xylene (mixed isomers), Ethylbenzene, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region), Certain glycol ethers; nearby reporters include Building Materials Manufacturing LLC. Sierra Aluminum Co Plant II stamps MID volume · OFFSITE pathway · CARC-LEAN 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 Sierra Aluminum Co Plant II TRI extract (MID · OFFSITE · CARC-LEAN · lead Xylene (mixed isomers)) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Sierra Aluminum Co Plant II totals are self-reported EPCRA §313 estimates for Fontana, CA, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 331318 · Primary Metals. 5.6% of San Bernardino TRI pounds in this extract. Nearest ABS peer: Oxy Vinyls LP la Porte Vcm Plant (Δ 69 lbs). Pounds ≠ exposure.
Sierra Aluminum Co Plant II stamps MID volume · OFFSITE pathway · CARC-LEAN · lead Xylene (mixed isomers). 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