EPA TRI Facility · Electric Utilities
Springerville Generating Station
Springerville, AZ · Parent: Uns Energy Corp
- Total releases
- 13.7M lbs
- Chemicals reported
- 18
- Carcinogens
- 4
- Primary pathway
- Land Disposal
LAND Form-R mix
Springerville Generating Station: how the 13.7M lbs splits
13.7M lbs across all reported pathways
- Land Disposal 12.8M lbs 93.8%
- Air Releases 840.5K lbs 6.2%
- Off-site Transfers 213 lbs <0.1%
Springerville Generating Station's 13.7M lbs Form-R total is LAND - land disposal is 93.8% of the bar. Next segment: air releases at 6.2%. Leading chemical by pounds: Barium compounds (except for barium sulfate (CAS No. 7727-43-7)).
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.
HEAVY volume LAND pathway CARC-LEAN
Springerville Generating Station is an EPA Toxics Release Inventory reporter in Springerville, AZ, in the electric utilities sector. It reported 2.5M lbs of releases across 16 chemicals in 2023, and 13.7M lbs in total across its 2019-2023 reporting years. That ranks 143 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Arizona's 288 reporting TRI sites, pounds #1 is not chemical-count #1. Springerville Generating Station is pounds #7 and chemical-count #7 at 13.7M lbs. Freeport-McMoran Miami Inc leads reported pounds (129.3M lbs) at 17 chemicals (chemical-count #10). Freeport-McMoran Morenci Inc leads chemical count at 33 chemicals (36.9M lbs, pounds #4). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Coronado Generating Station; Freeport-McMoran Morenci Inc; Rhinehart Oil Co. Holbrook Bulk Plant; Cholla Power Plant. Similar-scale Electric Utilities peers outside Arizona: Oak Grove Steam Electric Station; Dte Electric Co-Belle River Power Plant; Basin Electric Laramie River Station; American Electric Power Amos Plant. Largest disclosed chemicals by pounds: Barium compounds (except for barium sulfate (CAS No. 7727-43-7)); Manganese compounds; Ammonia; Vanadium compounds.
Springerville Generating Station stamps HEAVY volume with a dominant LAND pathway (93.8% land disposal) across 18 chemicals · 4 carcinogen-classified. Cumulative Form-R extract: 13.7M lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Oak Grove Steam Electric Station and Dte Electric Co-Belle River Power Plant.
Springerville Generating Station vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
14M lbs Top 1% higher than 99% 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
Springerville Generating Station inside Apache's TRI pounds
Among the 513 Electric Utilities facilities in this database, Springerville Generating Station reports the 16th-largest volume, placing it in the top 3.1% of its sector. This one site accounts for 88.0% of every pound reported in Apache. Its reported volume is concentrated rather than spread: Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) alone is 68.1% of the total. Scale peers outside Arizona include Oak Grove Steam Electric Station and Dte Electric Co-Belle River Power Plant.
County-dominant here means ≥25% of Apache's reported pounds (15.5M lbs county total). Shares only print when the site reports ≥1,000 lbs.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Springerville Generating Station's total reported releases fell from 2.7 million lb in 2022 to 2.5 million lb in 2023, based on EPA TRI filings.
- Springerville Generating Station's land releases fell from 2.6 million lb in 2022 to 2.3 million lb in 2023, based on EPA TRI filings.
- Springerville Generating Station's air releases fell from 162.8 thousand lb in 2022 to 156.3 thousand lb in 2023, based on EPA TRI filings.
Springerville Generating Station Form-R facts
Compare this facility
See how Springerville Generating Station stacks up against nearby facilities and the typical reporter.
7.3× 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 Springerville Generating Station releases toxic chemicals into the environment. Total: 13.7M lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 18% (3.0M lbs to 2.5M lbs).
Springerville Generating Station: annual Form-R pounds
HEAVY site · LAND pathway · TRI years 2019–2023
- 2019
- 2020
- 2021
- 2022
- 2023
What this shows Springerville Generating Station year-over-year reported totals (decreased by 18% 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: Barium compounds (except for barium sulfate (CAS No. 7727-43-7)).
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 3.0M lbs | 16 |
| 2020 | 2.8M lbs | 16 |
| 2021 | 2.7M lbs | 16 |
| 2022 | 2.7M lbs | 16 |
| 2023 | 2.5M lbs | 16 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 4 of 18 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 9.3M lbs | - |
| Manganese compounds | 1.3M lbs | - |
| Ammonia | 608.4K lbs | - |
| Vanadium compounds | 607.7K lbs | - |
| Zinc compounds | 399.4K lbs | - |
| Copper compounds | 399.0K lbs | - |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 268.8K lbs | - |
| Nickel compounds | 192.0K lbs | Carcinogen |
| Hydrogen fluoride | 159.9K lbs | - |
| Lead compounds | 157.5K lbs | - |
| Arsenic compounds | 151.1K lbs | Carcinogen |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 49.3K lbs | - |
| Lead And Lead Compounds | 46.5K lbs | - |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 6.2K lbs | - |
| Mercury compounds | 2.6K lbs | - |
| Polycyclic aromatic compounds | 1.1K lbs | Carcinogen |
| Mercury And Mercury Compounds | 756 lbs | - |
| Dioxin and dioxin-like compounds | 0 lbs | Carcinogen |
Springerville Generating Station · LAND-pathway site
Nearest TRI Facilities to Springerville Generating Station
Closest other reporters in Arizona - including Coronado Generating Station, Freeport-McMoran Morenci Inc, Rhinehart Oil Co. Holbrook Bulk Plant, ordered by distance.
Showing 8 of 287 other reporting facilities in Arizona.
Similar Electric Utilities Facilities
Other Electric Utilities facilities with similar total release volumes (±80%), outside Arizona - e.g. Oak Grove Steam Electric Station, Dte Electric Co-Belle River Power Plant, Basin Electric Laramie River Station.
Compare beyond Arizona
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Springerville Generating Station on cumulative reported pounds (13.7M lbs) and distinct chemical count (18). Release-pound peers include Ineos Pigments USA Inc, Oak Grove Steam Electric Station, Wood River Refinery. Chemical-count peers include Pride Solvents & Chemical Co of New Jersey, Mpm Silicones LLC, Max Environmental -- Yukon Facility. 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).
- Pride Solvents & Chemical Co of New Jersey Avenel, NJ · Chemical Wholesalers 18 chemicals
- Mpm Silicones LLC Waterford, NY · Chemicals 18 chemicals
- Max Environmental -- Yukon Facility Yukon, PA · Hazardous Waste 18 chemicals
- Desotec US LLC Darlington Facility Darlington, PA · Hazardous Waste 18 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 Barium compounds (except for barium sulfate (CAS No. 7727-43-7)), Manganese compounds, Ammonia, Vanadium compounds; nearby reporters include Coronado Generating Station. Springerville Generating Station stamps HEAVY volume · LAND 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 Springerville Generating Station TRI extract (HEAVY · LAND · CARC-LEAN · lead Barium compounds (except for barium sulfate (CAS No. 7727-43-7))) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Springerville Generating Station totals are self-reported EPCRA §313 estimates for Springerville, AZ, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 221112 · Electric Utilities. 88.0% of Apache TRI pounds in this extract. Nearest ABS peer: Ineos Pigments USA Inc (Δ 105.8K lbs). Pounds ≠ exposure.
Springerville Generating Station stamps HEAVY volume · LAND pathway · CARC-LEAN · lead Barium compounds (except for barium sulfate (CAS No. 7727-43-7)). 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