EPA TRI Facility · Electric Utilities
Guam Power Authority
Piti, GU
- Total releases
- 756.7K lbs
- Chemicals reported
- 7
- Carcinogens
- 3
- Primary pathway
- Air Releases
AIR Form-R mix
Guam Power Authority: how the 756.7K lbs splits
756.7K lbs across all reported pathways
- Air Releases 753.7K lbs 99.6%
- Land Disposal 3.0K lbs 0.4%
Guam Power Authority's 756.7K lbs Form-R total is AIR - air releases is 99.6% of the bar. Next segment: land disposal at 0.4%. Leading chemical by pounds: Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size).
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 AIR pathway TRACE-CARC
Guam Power Authority is an EPA Toxics Release Inventory reporter in Piti, GU, in the electric utilities sector. It reported 15.5K lbs of releases across 6 chemicals in 2023, and 756.7K lbs in total across its 2019-2023 reporting years. That ranks 1,545 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Guam's 10 reporting TRI sites, pounds #1 is not chemical-count #1. Guam Power Authority is pounds #2 and chemical-count #3 at 756.7K lbs. Naval Base Guam-Apra Harbor WWTP leads reported pounds (1.1M lbs) at 1 chemicals (chemical-count #10). Mobil Oil Guam Inc (cabras Island Terminal) leads chemical count at 14 chemicals (13.6K lbs, pounds #5). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: South Pacific Petroleum Corp; Mobil Oil Guam Inc (cabras Island Terminal); Naval Base Guam-Apra Harbor WWTP; Tenjo Vista Power Plant. Similar-scale Electric Utilities peers outside Guam: American Electric Power Conesville Plant; Sierra Pacific Power Co North Valmy Station; Hill Generating Station; Midamerican Energy Co George Neal North. Largest disclosed chemicals by pounds: Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size); Lead And Lead Compounds; Lead compounds; Naphthalene.
Guam Power Authority stamps MID volume with a dominant AIR pathway (99.6% air releases) across 7 chemicals · 3 carcinogen-classified. Cumulative Form-R extract: 756.7K lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include American Electric Power Conesville Plant and Sierra Pacific Power Co North Valmy Station.
Guam Power Authority vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
757K lbs Top 6% higher than 94% 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
Guam Power Authority inside Guam's TRI pounds
Among the 513 Electric Utilities facilities in this database, Guam Power Authority reports the 203rd-largest volume (756.7K lbs). This one site accounts for 38.3% of every pound reported in Guam. Its reported volume is concentrated rather than spread: Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) alone is 99.5% of the total. Scale peers outside Guam include American Electric Power Conesville Plant and Sierra Pacific Power Co North Valmy Station.
County-dominant here means ≥25% of Guam's reported pounds (2.0M lbs county total). Shares only print when the site reports ≥1,000 lbs.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Guam Power Authority's total reported releases fell from 112.1 thousand lb in 2022 to 15.5 thousand lb in 2023, based on EPA TRI filings.
- Guam Power Authority's air releases fell from 112.1 thousand lb in 2022 to 15.5 thousand lb in 2023, based on EPA TRI filings.
Guam Power Authority Form-R facts
Compare this facility
See how Guam Power Authority stacks up against nearby facilities and the typical reporter.
12.0× 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 Guam Power Authority releases toxic chemicals into the environment. Total: 756.7K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 92% (201.2K lbs to 15.5K lbs).
Guam Power Authority: annual Form-R pounds
MID site · AIR pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Guam Power Authority year-over-year reported totals (decreased by 92% 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: Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size).
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 201.2K lbs | 6 |
| 2020 | 225.5K lbs | 6 |
| 2021 | 202.4K lbs | 6 |
| 2022 | 112.1K lbs | 6 |
| 2023 | 15.5K lbs | 6 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 3 of 7 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 753.1K lbs | - |
| Lead And Lead Compounds | 1.6K lbs | - |
| Lead compounds | 1.5K lbs | - |
| Naphthalene | 427 lbs | Carcinogen |
| Polycyclic aromatic compounds | 120 lbs | Carcinogen |
| Benzo[g,h,i]perylene | 1 lbs | - |
| Dioxin and dioxin-like compounds | 0 lbs | Carcinogen |
Guam Power Authority · AIR-pathway site
Nearest TRI Facilities to Guam Power Authority
Closest other reporters in Guam - including South Pacific Petroleum Corp, Mobil Oil Guam Inc (cabras Island Terminal), Naval Base Guam-Apra Harbor WWTP, ordered by distance.
Showing 8 of 9 other reporting facilities in Guam.
Similar Electric Utilities Facilities
Other Electric Utilities facilities with similar total release volumes (±80%), outside Guam - e.g. American Electric Power Conesville Plant, Sierra Pacific Power Co North Valmy Station, Hill Generating Station.
Compare beyond Guam
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Guam Power Authority on cumulative reported pounds (756.7K lbs) and distinct chemical count (7). Release-pound peers include Regal Ware West Bend, American Electric Power Conesville Plant, Ingalls Shipbuilding Pascagoula Operations. Chemical-count peers include Hubbell Caribe Ltd, Celanese Microcircuits Industries Ltd., Virgin Islands Water & Power Authority. 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.
- Regal Ware West Bend West Bend, WI · Fabricated Metals 757.0K lbs reported
- American Electric Power Conesville Plant Conesville, OH · Electric Utilities 757.2K lbs reported
- Ingalls Shipbuilding Pascagoula Operations Pascagoula, MS · Transportation Equipment 757.2K lbs reported
- U.S. Army Joint Base Lewis-McChord Jblm, WA · Other 755.3K lbs reported
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 Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Lead And Lead Compounds, Lead compounds, Naphthalene; nearby reporters include South Pacific Petroleum Corp. Guam Power Authority stamps MID volume · AIR 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 Guam Power Authority TRI extract (MID · AIR · TRACE-CARC · lead Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Guam Power Authority totals are self-reported EPCRA §313 estimates for Piti, GU, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 221112 · Electric Utilities. 38.3% of Guam TRI pounds in this extract. Nearest ABS peer: Regal Ware West Bend (Δ 290 lbs). Pounds ≠ exposure.
Guam Power Authority stamps MID volume · AIR pathway · TRACE-CARC · lead Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size). 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