Facility profile
Huntington Ingalls Incorporated - Nn Shipbldg Div
Violation Identified across 5 of the last 12 quarters in the imported ECHO record.
Noncompliance quarters
5
Counted from the imported ECHO record over the last 12 quarters.
Penalties
$0
Recorded enforcement amount carried into the facility page.
Last inspection
2025-05-27
Displayed as plain language instead of hidden in agency exports.
Trend
Watch
Reported on-site releases are higher in 2024 than in 2022.
| Year | Air | Water | Land | Total |
|---|---|---|---|---|
| 2022 | 74,746 lbs | 4,030 lbs | 0 lbs | 78,776 lbs |
| 2023 | 96,741 lbs | 3,773 lbs | 0 lbs | 100,513 lbs |
| 2024 | 88,757 lbs | 763 lbs | 0 lbs | 89,519 lbs |
Chemical breakdown
What this facility is reporting
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n-Butyl alcohol
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
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1, 2, 4-Trimethylbenzene
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
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Xylene (mixed isomers)
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
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Manganese
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
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Copper compounds
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
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Nickel
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
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Chromium compounds (except for chromite ore mined in the Transvaal Region)
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
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Lead
Latest 2024 TRI data shows water as the largest reported pathway for this chemical at the facility.
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Diisocyanates
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
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Zinc (fume or dust)
Latest 2024 TRI data shows air as the largest reported pathway for this chemical at the facility.
Enforcement layer
Why the ECHO-style detail matters
Violation Identified across 5 of the last 12 quarters in the imported ECHO record.