EPA TRI Facility · Transportation Equipment
Ingalls Shipbuilding Pascagoula Operations
Pascagoula, MS · Parent: Huntington Ingalls Industries Inc
- Total releases
- 757.2K lbs
- Chemicals reported
- 16
- Carcinogens
- 2
- Primary pathway
- Air Releases
AIR Form-R mix
Ingalls Shipbuilding Pascagoula Operations: how the 757.2K lbs splits
757.2K lbs across all reported pathways
- Air Releases 662.8K lbs 87.5%
- Off-site Transfers 92.1K lbs 12.2%
- Water Discharges 2.3K lbs 0.3%
Ingalls Shipbuilding Pascagoula Operations's 757.2K lbs Form-R total is AIR - air releases is 87.5% of the bar. Next segment: off-site transfers at 12.2%. Leading chemical by pounds: n-Butyl alcohol.
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
Ingalls Shipbuilding Pascagoula Operations is an EPA Toxics Release Inventory reporter in Pascagoula, MS, in the transportation equipment sector. It reported 189.8K lbs of releases across 10 chemicals in 2023, and 757.2K lbs in total across its 2019-2023 reporting years. That ranks 1,542 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Mississippi's 328 reporting TRI sites, pounds #1 is not chemical-count #1. Ingalls Shipbuilding Pascagoula Operations is pounds #33 and chemical-count #15 at 757.2K lbs. Tronox LLC leads reported pounds (64.0M lbs) at 17 chemicals (chemical-count #12). Chevron Products Co Pascagoula Refinery leads chemical count at 46 chemicals (7.4M lbs, pounds #9). Reported volume rose against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Bollinger Mississippi Shipbuilding LLC; Bollinger Mississippi Repair LLC; Rolls-Royce Naval Marine Inc; Mmc Materials Gulf Coast LLC - Pascagoula. Similar-scale Transportation Equipment peers outside Mississippi: Barrier Reef Pools; Ford Motor Co Michigan Assembly Plant; Fca US Belvidere Assembly Plant; Sportsman Boat Manufacturing Inc.. Largest disclosed chemicals by pounds: n-Butyl alcohol; Methanol; Xylene (mixed isomers); 1,2,4-Trimethylbenzene.
Ingalls Shipbuilding Pascagoula Operations stamps MID volume with a dominant AIR pathway (87.5% air releases) across 16 chemicals · 2 carcinogen-classified. Cumulative Form-R extract: 757.2K lbs (2019–2023). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Barrier Reef Pools and Ford Motor Co Michigan Assembly Plant.
Ingalls Shipbuilding Pascagoula Operations 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
Ingalls Shipbuilding Pascagoula Operations in the Transportation Equipment sector extract
Among the 1,603 Transportation Equipment facilities in this database, Ingalls Shipbuilding Pascagoula Operations reports the 57th-largest volume, placing it in the top 3.6% of its sector. Scale peers outside Mississippi include Barrier Reef Pools and Ford Motor Co Michigan Assembly 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
- Ingalls Shipbuilding Pascagoula Operations's total reported releases rose from 137.2 thousand lb in 2022 to 189.8 thousand lb in 2023, based on EPA TRI filings.
- Ingalls Shipbuilding Pascagoula Operations's air releases rose from 111.8 thousand lb in 2022 to 160.0 thousand lb in 2023, based on EPA TRI filings.
- Ingalls Shipbuilding Pascagoula Operations's off-site transfers rose from 24.8 thousand lb in 2022 to 29.3 thousand lb in 2023, based on EPA TRI filings.
- Ingalls Shipbuilding Pascagoula Operations's water releases fell from 553 lb in 2022 to 525 lb in 2023, based on EPA TRI filings.
Ingalls Shipbuilding Pascagoula Operations Form-R facts
Compare this facility
See how Ingalls Shipbuilding Pascagoula Operations stacks up against nearby facilities and the typical reporter.
7.5× 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 Ingalls Shipbuilding Pascagoula Operations releases toxic chemicals into the environment. Total: 757.2K lbs.
Emissions Trend Summary
From 2019 to 2023, total releases increased by 50% (126.9K lbs to 189.8K lbs).
Ingalls Shipbuilding Pascagoula Operations: 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 Ingalls Shipbuilding Pascagoula Operations year-over-year reported totals (increased by 50% 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: n-Butyl alcohol.
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 126.9K lbs | 8 |
| 2020 | 118.3K lbs | 9 |
| 2021 | 185.1K lbs | 11 |
| 2022 | 137.2K lbs | 10 |
| 2023 | 189.8K lbs | 10 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 2 of 16 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| n-Butyl alcohol | 276.0K lbs | - |
| Methanol | 152.4K lbs | - |
| Xylene (mixed isomers) | 89.1K lbs | - |
| 1,2,4-Trimethylbenzene | 84.7K lbs | - |
| Copper compounds | 54.7K lbs | - |
| Propylene | 45.5K lbs | - |
| Copper And Copper Compounds | 28.2K lbs | - |
| Manganese And Manganese Compounds | 9.8K lbs | - |
| Manganese compounds | 7.6K lbs | - |
| Aluminum (fume or dust) | 3.8K lbs | - |
| Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) | 2.6K lbs | - |
| Nickel And Nickel Compounds | 1.2K lbs | Carcinogen |
| Nickel compounds | 789 lbs | Carcinogen |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 612 lbs | - |
| Lead And Lead Compounds | 51 lbs | - |
| Lead compounds | 42 lbs | - |
Ingalls Shipbuilding Pascagoula Operations · AIR-pathway site
Nearest TRI Facilities to Ingalls Shipbuilding Pascagoula Operations
Closest other reporters in Mississippi - including Bollinger Mississippi Shipbuilding LLC, Bollinger Mississippi Repair LLC, Rolls-Royce Naval Marine Inc, ordered by distance.
Showing 8 of 327 other reporting facilities in Mississippi.
Similar Transportation Equipment Facilities
Other Transportation Equipment facilities with similar total release volumes (±80%), outside Mississippi - e.g. Barrier Reef Pools, Ford Motor Co Michigan Assembly Plant, Fca US Belvidere Assembly Plant.
Compare beyond Mississippi
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Ingalls Shipbuilding Pascagoula Operations on cumulative reported pounds (757.2K lbs) and distinct chemical count (16). Release-pound peers include American Electric Power Conesville Plant, Regal Ware West Bend, Guam Power Authority. Chemical-count peers include Surpass Chemical Co. Inc., The Federal Metal Co, Wheelabrator Frackville Energy Co 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.
- American Electric Power Conesville Plant Conesville, OH · Electric Utilities 757.2K lbs reported
- Regal Ware West Bend West Bend, WI · Fabricated Metals 757.0K lbs reported
- Guam Power Authority Piti, GU · Electric Utilities 756.7K lbs reported
- Real Alloy Specification LLC Coldwater, MI · Primary Metals 758.4K 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 n-Butyl alcohol, Methanol, Xylene (mixed isomers), 1,2,4-Trimethylbenzene; nearby reporters include Bollinger Mississippi Shipbuilding LLC. Ingalls Shipbuilding Pascagoula Operations 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 Ingalls Shipbuilding Pascagoula Operations TRI extract (MID · AIR · TRACE-CARC · lead n-Butyl alcohol) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Ingalls Shipbuilding Pascagoula Operations totals are self-reported EPCRA §313 estimates for Pascagoula, MS, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 336611 · Transportation Equipment. 6.6% of Jackson TRI pounds in this extract. Nearest ABS peer: American Electric Power Conesville Plant (Δ 12 lbs). Pounds ≠ exposure.
Ingalls Shipbuilding Pascagoula Operations stamps MID volume · AIR pathway · TRACE-CARC · lead n-Butyl alcohol. 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