EPA TRI Facility · Electric Utilities
Coronado Generating Station
Saint Johns, AZ · Parent: Salt River Project Ai&pd
- Total releases
- 1.9M lbs
- Chemicals reported
- 20
- Carcinogens
- 3
- Primary pathway
- Land Disposal
LAND Form-R mix
Coronado Generating Station: how the 1.9M lbs splits
1.9M lbs across all reported pathways
- Land Disposal 1.7M lbs 92.7%
- Air Releases 136.6K lbs 7.3%
- Off-site Transfers 0 lbs <0.1%
Coronado Generating Station's 1.9M lbs Form-R total is LAND - land disposal is 92.7% of the bar. Next segment: air releases at 7.3%. 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 TRACE-CARC
Coronado Generating Station is an EPA Toxics Release Inventory reporter in Saint Johns, AZ, in the electric utilities sector. It reported 408.1K lbs of releases across 14 chemicals in 2023, and 1.9M lbs in total across its 2019-2023 reporting years. That ranks 891 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. Coronado Generating Station is pounds #11 and chemical-count #6 at 1.9M 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 rose against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Springerville Generating Station; Rhinehart Oil Co. Holbrook Bulk Plant; Cholla Power Plant; Freeport-McMoran Morenci Inc. Similar-scale Electric Utilities peers outside Arizona: John Twitty Energy Center; Duke Energy Progress Llc-Mayo Electric Generating Plant; Ebensburg Power Co; Dominion Energy of South Carolina - Williams Station Genco. Largest disclosed chemicals by pounds: Barium compounds (except for barium sulfate (CAS No. 7727-43-7)); Barium And Barium Compounds; Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size); Vanadium compounds.
Coronado Generating Station stamps HEAVY volume with a dominant LAND pathway (92.7% land disposal) across 20 chemicals · 3 carcinogen-classified. Cumulative Form-R extract: 1.9M lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include John Twitty Energy Center and Duke Energy Progress Llc-Mayo Electric Generating Plant.
Coronado Generating Station vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
1.9M lbs Top 3% higher than 97% 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
Coronado Generating Station in the Electric Utilities sector extract
Among the 513 Electric Utilities facilities in this database, Coronado Generating Station reports the 152nd-largest volume (1.9M lbs). Scale peers outside Arizona include John Twitty Energy Center and Duke Energy Progress Llc-Mayo Electric Generating Plant.
Sector rank uses reported TRI pounds only. Share callouts need ≥1,000 lbs so tiny totals cannot mint a false signal.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Coronado Generating Station's total reported releases rose from 386.9 thousand lb in 2022 to 408.1 thousand lb in 2023, based on EPA TRI filings.
- Coronado Generating Station's air releases rose from 22.6 thousand lb in 2022 to 39.4 thousand lb in 2023, based on EPA TRI filings.
- Coronado Generating Station's land releases rose from 364.3 thousand lb in 2022 to 368.8 thousand lb in 2023, based on EPA TRI filings.
Coronado Generating Station Form-R facts
Compare this facility
See how Coronado Generating Station stacks up against nearby facilities and the typical reporter.
86% less 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 Coronado Generating Station releases toxic chemicals into the environment. Total: 1.9M lbs.
Emissions Trend Summary
From 2019 to 2023, total releases increased by 54% (264.5K lbs to 408.1K lbs).
Coronado Generating Station: annual Form-R pounds
HEAVY site · LAND pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Coronado Generating Station year-over-year reported totals (increased by 54% 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 | 264.5K lbs | 12 |
| 2020 | 350.7K lbs | 14 |
| 2021 | 454.6K lbs | 15 |
| 2022 | 386.9K lbs | 14 |
| 2023 | 408.1K lbs | 14 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 3 of 20 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 905.9K lbs | - |
| Barium And Barium Compounds | 665.8K lbs | - |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 76.6K lbs | - |
| Vanadium compounds | 44.7K lbs | - |
| Zinc compounds | 32.6K lbs | - |
| Hydrogen fluoride | 25.0K lbs | - |
| Manganese And Manganese Compounds | 24.9K lbs | - |
| Ammonia | 24.3K lbs | - |
| Manganese compounds | 23.1K lbs | - |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 12.5K lbs | - |
| Copper compounds | 12.3K lbs | - |
| Copper And Copper Compounds | 12.0K lbs | - |
| Lead compounds | 2.8K lbs | - |
| Lead And Lead Compounds | 2.1K lbs | - |
| Mercury compounds | 89 lbs | - |
| Mercury And Mercury Compounds | 74 lbs | - |
| Naphthalene | 59 lbs | Carcinogen |
| Polycyclic aromatic compounds | 9 lbs | Carcinogen |
| Benzo[g,h,i]perylene | 1 lbs | - |
| Dioxin and dioxin-like compounds | 0 lbs | Carcinogen |
Coronado Generating Station · LAND-pathway site
Nearest TRI Facilities to Coronado Generating Station
Closest other reporters in Arizona - including Springerville Generating Station, Rhinehart Oil Co. Holbrook Bulk Plant, Cholla Power 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. John Twitty Energy Center, Duke Energy Progress Llc-Mayo Electric Generating Plant, Ebensburg Power Co.
Compare beyond Arizona
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Coronado Generating Station on cumulative reported pounds (1.9M lbs) and distinct chemical count (20). Release-pound peers include Veolia N.a. Inc., Alon Usa-Big Spring Refinery, Torrance Refining Co LLC. Chemical-count peers include Pixelle Specialty Solutions, Chemours Chambers Works, Fisher Scientific Co. L.L.C.. 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 Barium compounds (except for barium sulfate (CAS No. 7727-43-7)), Barium And Barium Compounds, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Vanadium compounds; nearby reporters include Springerville Generating Station. Coronado Generating Station stamps HEAVY volume · LAND pathway · TRACE-CARC 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 Coronado Generating Station TRI extract (HEAVY · LAND · TRACE-CARC · 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.
Coronado Generating Station totals are self-reported EPCRA §313 estimates for Saint Johns, AZ, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 221112 · Electric Utilities. 12.0% of Apache TRI pounds in this extract. Nearest ABS peer: Veolia N.a. Inc. (Δ 388 lbs). Pounds ≠ exposure.
Coronado Generating Station stamps HEAVY volume · LAND pathway · TRACE-CARC · 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