Clean Air Act stationary source · ICIS-AIR CT0000000901100628
U S NAVAL SUBMARINE BASE, Groton (Historical), CT: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Major sourceEmissions classification
- Unaddressed-StateCurrent violation status, as filed
- 10Compliance evaluations since January 1, 2017
- 3High-priority violations since January 1, 2017
- 1Formal enforcement actions since January 1, 2017
U S NAVAL SUBMARINE BASE, at RTE 12 - CRYSTAL LAKE ROAD, Groton (Historical) in New London County, Connecticut, is an operating major source of air pollution on EPA’s ICIS-AIR register. EPA’s file records its current violation status (ICIS-AIR’s high-priority violation field) as “Unaddressed-State”. New London County is on EPA’s Green Book list of areas that do not meet a national air quality standard. The status and classification are as EPA’s facility file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the source’s current standing, quarter by quarter.
Identity
| Facility as filed | U S NAVAL SUBMARINE BASE |
|---|---|
| ICIS-AIR ID | CT0000000901100628 |
| EPA facility registry ID | 110006873954 |
| Operating status | Operating |
| Emissions classification | Major source |
| Current violation status (ICIS-AIR high-priority violation field) | Unaddressed-State |
| Address | RTE 12 - CRYSTAL LAKE ROAD, Groton (Historical), CT 06349-5039 |
| County | New London County |
| In a nonattainment county | Yes (EPA Green Book) |
| Industry (NAICS) | Utilities (NAICS 2211) |
| SIC code | 9711 |
| EPA region | 01 |
Cited to the EPA ICIS-AIR facility file (ECHO download).
Programs and pollutants
Velarion’s copy of EPA’s ICIS-AIR download does not include its program, pollutant and Title V certification files, so this page does not list the Clean Air Act programs U S NAVAL SUBMARINE BASE is under or the pollutants it is permitted for. The programs each evaluation and violation below was recorded under are shown with it. EPA’s free Detailed Facility Report lists both.
Compliance evaluations
- 10Evaluations since January 1, 2017
- 2Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| June 23, 2026 | PCE On-Site | U.S. EPA | 40 CFR Part 63 Area Sources |
| January 17, 2023 | PCE Off-Site | U.S. EPA | MACT Standards (40 CFR Part 63) |
| June 27, 2022 | FCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| September 30, 2020 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| September 30, 2020 | PCE Off-Site | State | MACT Standards (40 CFR Part 63) |
| September 30, 2020 | PCE Off-Site | State | New Source Performance Standards |
| September 30, 2020 | PCE Off-Site | State | New Source Performance Standards |
| May 16, 2020 | PCE Off-Site | U.S. EPA | MACT Standards (40 CFR Part 63) |
| July 9, 2018 | FCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 7, 2018 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
Violations
- 7Violation determinations since January 1, 2017
- 3Of them high-priority
A high-priority violation (HPV) is the most serious class of Clean Air Act non-compliance an agency records; a federally reportable violation (FRV) is the next step down. Each row is one determination as EPA’s violation history files it.
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| February 22, 2024 | HPV day-zero determination | State | New Source Review Permit Requirements |
| January 31, 2024 | Earliest FRV determination | State | New Source Review Permit Requirements |
| February 23, 2021 | Earliest FRV determination | State | MACT Standards (40 CFR Part 63); New Source Review Permit Requirements; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| June 14, 2018 | HPV day-zero determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| March 29, 2018 | Earliest FRV determination | State | New Source Review Permit Requirements; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| January 2, 2018 | HPV day-zero determination | State | New Source Review Permit Requirements; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| October 10, 2017 | Earliest FRV determination | State | New Source Review Permit Requirements; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
Enforcement and penalties
1 formal enforcement actions since January 1, 2017, 1 of them with a penalty filed above zero. Each penalty is shown as EPA’s formal action file states it; “Not stated” means the file gives no figure, and $0 is a disclosed zero.
| Date | What EPA recorded | Agency | Penalty, as filed |
|---|---|---|---|
| June 10, 2020 | Administrative Order | State | $21,000 |
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| January 31, 2024 | Notice of Violation | State |
| February 23, 2021 | Notice of Violation | State |
| June 14, 2018 | Notice of Violation | State |
| March 29, 2018 | Notice of Violation | State |
| October 10, 2017 | Notice of Violation | State |
Stack tests
- 31Stack tests since January 1, 2017
- 0Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| June 25, 2026 | Pass | State |
| June 25, 2026 | Pass | State |
| June 24, 2026 | Pass | State |
| June 23, 2026 | Pass | State |
| June 12, 2025 | Pass | State |
| June 11, 2025 | Pass | State |
| June 20, 2024 | Pass | State |
| June 18, 2024 | Pass | State |
| April 17, 2024 | Pass | State |
| July 6, 2023 | Pass | State |
| July 6, 2023 | Pass | State |
| July 6, 2023 | Pass | State |
| June 27, 2023 | Pass | State |
| June 27, 2023 | Pass | State |
| June 27, 2023 | Pass | State |
| July 6, 2022 | Pass | State |
| July 5, 2022 | Pass | State |
| April 14, 2022 | Pass | State |
| July 8, 2021 | Pass | State |
| July 8, 2021 | Pass | State |
| August 21, 2020 | Pass | State |
| August 21, 2020 | Pass | State |
| June 15, 2020 | Pass | State |
| August 23, 2019 | Pass | State |
| August 23, 2019 | Pass | State |
| April 23, 2019 | Pass | State |
| February 27, 2019 | Pass | State |
| February 27, 2019 | Pass | State |
| July 31, 2018 | Pass | State |
| June 2, 2017 | Pass | State |
| June 1, 2017 | Pass | State |
Cited to the EPA ICIS-AIR evaluation, violation, stack test and enforcement files (ECHO download), events dated January 1, 2017 or later as loaded; up to 50 rows of each shown, newest first.
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EPA publishes a free Detailed Facility Report for every source on ECHO: its compliance status quarter by quarter, its evaluations, and its violations, enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter EPA facility registry ID 110006873954 there.
Nearby on the register
- Air-emissions sources in New London County
- Every source record in New London County, A to Z
- Air-emissions sources in Connecticut
- Every source record in Connecticut, A to Z
Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.