EPA TRI Facility · Electric Utilities
Cholla Power Plant
Joseph City, AZ · Parent: Pinnacle West Capital Corp
- Total releases
- 581.7K lbs
- Chemicals reported
- 23
- Carcinogens
- 5
- Primary pathway
- Land Disposal
LAND Form-R mix
Cholla Power Plant: how the 581.7K lbs splits
581.7K lbs across all reported pathways
- Land Disposal 537.4K lbs 92.4%
- Air Releases 44.3K lbs 7.6%
- Off-site Transfers 7 lbs <0.1%
Cholla Power Plant's 581.7K lbs Form-R total is LAND - land disposal is 92.4% of the bar. Next segment: air releases at 7.6%. 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.
MID volume LAND pathway TRACE-CARC
Cholla Power Plant is an EPA Toxics Release Inventory reporter in Joseph City, AZ, in the electric utilities sector. It reported 93.7K lbs of releases across 12 chemicals in 2023, and 581.7K lbs in total across its 2019-2023 reporting years. That ranks 1,777 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. Cholla Power Plant is pounds #15 and chemical-count #4 at 581.7K 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: Rhinehart Oil Co. Holbrook Bulk Plant; Coronado Generating Station; Nestle Purina Petcare Co; Flagstaff Plant #21. Similar-scale Electric Utilities peers outside Arizona: Rm Miller Power; National Grid Northport Power Station; Transalta Centralia Generation / Mining; Sigeco F B Culley Generating Station. Other Pinnacle West Capital Corp sites in this extract: Four Corners Steam Electric Station. Largest disclosed chemicals by pounds: Barium compounds (except for barium sulfate (CAS No. 7727-43-7)); Barium And Barium Compounds; Manganese compounds; Manganese And Manganese Compounds.
Cholla Power Plant stamps MID volume with a dominant LAND pathway (92.4% land disposal) across 23 chemicals · 5 carcinogen-classified. Cumulative Form-R extract: 581.7K lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Rm Miller Power and National Grid Northport Power Station.
Cholla Power Plant vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
582K lbs Top 7% higher than 93% 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
Cholla Power Plant inside Navajo's TRI pounds
Among the 513 Electric Utilities facilities in this database, Cholla Power Plant reports the 227th-largest volume (581.7K lbs). This one site accounts for more than 99.9% of every pound reported in Navajo. Scale peers outside Arizona include Rm Miller Power and National Grid Northport Power Station.
County-dominant here means ≥25% of Navajo's reported pounds (581.9K lbs county total). Shares only print when the site reports ≥1,000 lbs.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Cholla Power Plant's total reported releases fell from 127.6 thousand lb in 2022 to 93.7 thousand lb in 2023, based on EPA TRI filings.
- Cholla Power Plant's air releases fell from 9.4 thousand lb in 2022 to 6.1 thousand lb in 2023, based on EPA TRI filings.
- Cholla Power Plant's land releases fell from 118.2 thousand lb in 2022 to 87.6 thousand lb in 2023, based on EPA TRI filings.
- Cholla Power Plant's chemicals reported fell from 14 in 2022 to 12 in 2023, based on EPA TRI filings.
Cholla Power Plant Form-R facts
Compare this facility
See how Cholla Power Plant stacks up against nearby facilities and the typical reporter.
2195.0× more than the comparison
2.3× 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 Cholla Power Plant releases toxic chemicals into the environment. Total: 581.7K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 26% (127.2K lbs to 93.7K lbs).
Cholla Power Plant: annual Form-R pounds
MID site · LAND pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Cholla Power Plant year-over-year reported totals (decreased by 26% 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 | 127.2K lbs | 16 |
| 2020 | 168.8K lbs | 17 |
| 2021 | 64.5K lbs | 12 |
| 2022 | 127.6K lbs | 14 |
| 2023 | 93.7K lbs | 12 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 5 of 23 chemicals are carcinogens. Sorted by total release volume.
Cholla Power Plant · LAND-pathway site
Nearest TRI Facilities to Cholla Power Plant
Closest other reporters in Arizona - including Rhinehart Oil Co. Holbrook Bulk Plant, Coronado Generating Station, Nestle Purina Petcare Co, 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. Rm Miller Power, National Grid Northport Power Station, Transalta Centralia Generation / Mining.
Compare beyond Arizona
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Cholla Power Plant on cumulative reported pounds (581.7K lbs) and distinct chemical count (23). Release-pound peers include Rq Resins LLC, Western Sugar COOPERATIVE.130130, North Country Dairy LLC. Chemical-count peers include Woodland Pulp LLC, Brenntag Northeast LLC, Aes Warrior Run 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 Pinnacle West Capital Corp Facilities
Same-parent TRI sites ranked by reported releases - including Four Corners Steam Electric Station.
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, Manganese compounds, Manganese And Manganese Compounds; nearby reporters include Rhinehart Oil Co. Holbrook Bulk Plant. Cholla Power Plant stamps MID 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 Cholla Power Plant TRI extract (MID · 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.
Cholla Power Plant totals are self-reported EPCRA §313 estimates for Joseph City, AZ, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 221112 · Electric Utilities. more than 99.9% of Navajo TRI pounds in this extract. Nearest ABS peer: Rq Resins LLC (Δ 496 lbs). Pounds ≠ exposure.
Cholla Power Plant stamps MID 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