EPA TRI Facility · Electric Utilities
Arizona Electric Power Cooperative Inc
Cochise, AZ
- Total releases
- 509.5K lbs
- Chemicals reported
- 16
- Carcinogens
- 4
- Primary pathway
- Land Disposal
Arizona Electric Power Cooperative Inc has reported 509.5K lbs of toxic releases across 16 chemicals to the EPA Toxic Release Inventory, based on annual facility disclosures from 2019 through 2024. Of the chemicals reported, 4 are classified as carcinogens, representing 25% of the facility's chemical profile. The facility operates in the Electric Utilities sector. The primary release pathway is land disposal, accounting for 91% of total releases. All release data shown below is self-reported to the EPA under the Emergency Planning and Community Right-to-Know Act (EPCRA) Section 313.
Arizona Electric Power Cooperative Inc files annual Form R disclosures to the EPA Toxics Release Inventory under EPCRA Section 313, classified under NAICS 221112 (Electric Utilities). Across 5 years of records spanning 2019–2023, the site has disclosed 509.5K lbs in cumulative toxic releases across 16 distinct chemicals, 4 of which (25%) carry a carcinogenic classification.
The dominant release pathway is land disposal at 465.5K lbs (91.4% of total volume), followed by air releases at 8.6%. Between 2019 and 2023, reported totals increased by 61% - from 45.5K lbs to 73.4K lbs.
TRI Form R values are self-reported estimates, not measured stack emissions, and treat every pound of reported chemical equally regardless of toxicity. Inclusion in the TRI database does not establish a health risk to nearby residents; it documents the annual reporting record that Arizona Electric Power Cooperative Inc has filed with the EPA under federal community right-to-know requirements.
Quick Facts
Compare this facility
See how Arizona Electric Power Cooperative Inc stacks up against nearby facilities and the typical reporter.
100% 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 Arizona Electric Power Cooperative Inc releases toxic chemicals into the environment. Total: 509.5K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases increased by 61% (45.5K lbs to 73.4K lbs).
Reported total releases by year
Arizona Electric Power Cooperative Inc - annual TRI totals
- 2019 0
2019
0 million lbs
- 2020 0
2020
0 million lbs
- 2021 0
2021
0 million lbs
- 2022 0
2022
0 million lbs
- 2023 0
2023
0 million lbs
What this shows Year-over-year reported totals. TRI figures are self-reported estimates and can swing with production levels, waste-rock handling and reporting changes, not only with emissions controls.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 45.5K lbs | 14 |
| 2020 | 66.8K lbs | 14 |
| 2021 | 144.3K lbs | 14 |
| 2022 | 179.5K lbs | 13 |
| 2023 | 73.4K lbs | 14 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 4 of 16 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Barium And Barium Compounds | 279.6K lbs | - |
| Manganese And Manganese Compounds | 63.7K lbs | - |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 40.5K lbs | - |
| Vanadium compounds | 24.9K lbs | - |
| Hydrogen fluoride | 16.7K lbs | - |
| Zinc compounds | 16.3K lbs | - |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 16.2K lbs | - |
| Copper And Copper Compounds | 13.8K lbs | - |
| Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) | 10.9K lbs | - |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 9.6K lbs | - |
| Lead And Lead Compounds | 8.1K lbs | - |
| Nickel | 5.5K lbs | Carcinogen |
| Cobalt And Cobalt Compounds | 2.0K lbs | Carcinogen |
| Cobalt compounds | 1.2K lbs | Carcinogen |
| Mercury | 390 lbs | - |
| Dioxin and dioxin-like compounds | 2 lbs | Carcinogen |
Location
Other Facilities in Arizona
About TRI Data
Data as of 2024 reporting year. Source: U.S. Environmental Protection Agency (EPA) Toxic Release Inventory.
Data comes from the EPA Toxic Release Inventory (TRI) program. Facilities that manufacture, process, or otherwise use listed toxic chemicals above threshold amounts are required to report annually to the EPA.
Release quantities are self-reported by the facility and may represent estimates rather than exact measurements. "Total releases" includes releases to air, water, land, and off-site transfers for disposal. Quantities shown here are aggregated across all available reporting years.
PlainEnviro presents this data without advocacy framing. The presence of a facility in the TRI database does not by itself indicate a health risk. For site-specific health questions, consult your local environmental or health agency.
Frequently Asked Questions
What chemicals does Arizona Electric Power Cooperative Inc release? ▼
What industry is Arizona Electric Power Cooperative Inc in? ▼
How long has Arizona Electric Power Cooperative Inc reported to the TRI? ▼
How does Arizona Electric Power Cooperative Inc release toxic chemicals? ▼
Are emissions from Arizona Electric Power Cooperative Inc increasing or decreasing? ▼
Is Arizona Electric Power Cooperative Inc a health risk? ▼
Does Arizona Electric Power Cooperative Inc release carcinogens? ▼
Explore More Data for Arizona
Read our methodology - how this data is sourced, computed, and verified.
Related
Sources & how this page was built
Every figure on this page traces to public, federal-government data on Arizona Electric Power Cooperative Inc. The records below are the primary sources; our methodology explains how they are joined, computed, and verified.
- EPA Toxics Release Inventory (TRI) Basic Data Files - annual self-reported chemical-release filings. epa.gov
- EPA TRI Program, chemical & reporting reference - what each chemical is and how releases are counted. epa.gov
- EPA Facility Registry Service (FRS) - authoritative facility location and identity. epa.gov
- EPA Enforcement & Compliance History Online (ECHO) - regulatory and compliance context. echo.epa.gov
- EPA Envirofacts - the EPA data warehouse that exposes these datasets. enviro.epa.gov
Retrieved and formatted by PlainEnviro Editorial. TRI release totals are self-reported estimates, not measured stack emissions.