Clean Air Act stationary source · ICIS-AIR NH0000003301590782
GRANITE RIDGE ENERGY, LLC, Londonderry, NH: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Major sourceEmissions classification
- No Violation IdentifiedCurrent violation status, as filed
- 12Compliance evaluations since January 1, 2017
- 0High-priority violations since January 1, 2017
- 0Formal enforcement actions since January 1, 2017
GRANITE RIDGE ENERGY, LLC, at 21 N WENTWORTH AVE, Londonderry in Rockingham County, New Hampshire, 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 “No Violation Identified”. Rockingham 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 | GRANITE RIDGE ENERGY, LLC |
|---|---|
| ICIS-AIR ID | NH0000003301590782 |
| EPA facility registry ID | 110015655209 |
| Operating status | Operating |
| Emissions classification | Major source |
| Current violation status (ICIS-AIR high-priority violation field) | No Violation Identified |
| Address | 21 N WENTWORTH AVE, Londonderry, NH 03053 |
| County | Rockingham County |
| In a nonattainment county | Yes (EPA Green Book) |
| Industry (NAICS) | Utilities (NAICS 2211) |
| 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 yet include its program, pollutant and Title V certification files, so this page does not list the Clean Air Act programs GRANITE RIDGE ENERGY, LLC 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
- 12Evaluations since January 1, 2017
- 5Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| February 3, 2026 | PCE On-Site | State | New Source Review Permit Requirements; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| April 1, 2025 | FCE On-Site | State | Acid Rain Deposition Control (CAA Title IV); New Source Performance Standards; New Source Review Permit Requirements; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| December 21, 2022 | FCE On-Site | State | Acid Rain Deposition Control (CAA Title IV); New Source Performance Standards; New Source Review Permit Requirements; Prevention of Significant Deterioration of Air Quality; Title V Permits |
| December 2, 2022 | PCE On-Site | State | New Source Performance Standards; Title V Permits |
| August 11, 2022 | PCE On-Site | State | Acid Rain Deposition Control (CAA Title IV); New Source Performance Standards; New Source Review Permit Requirements; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| December 1, 2021 | PCE On-Site | State | Acid Rain Deposition Control (CAA Title IV); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| January 4, 2021 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| December 11, 2020 | FCE Off-Site | State | Acid Rain Deposition Control (CAA Title IV); New Source Performance Standards; New Source Review Permit Requirements; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 12, 2019 | FCE Off-Site | State | Acid Rain Deposition Control (CAA Title IV); New Source Performance Standards; New Source Review Permit Requirements; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| July 14, 2017 | PCE Off-Site | U.S. EPA | New Source Performance Standards |
| April 21, 2017 | PCE Off-Site | U.S. EPA | New Source Performance Standards |
| February 14, 2017 | FCE On-Site | State | Acid Rain Deposition Control (CAA Title IV); New Source Performance Standards; New Source Review Permit Requirements; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
Violations
- 0Violation determinations since January 1, 2017
- 0Of 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.
EPA’s violation history file holds no violation for ICIS-AIR NH0000003301590782 since January 1, 2017.
Enforcement and penalties
0 formal enforcement actions since January 1, 2017, 0 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.
Informal enforcement
EPA’s informal action file holds no notice or warning for ICIS-AIR NH0000003301590782 since January 1, 2017.
Stack tests
- 20Stack tests since January 1, 2017
- 0Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| May 28, 2026 | Incomplete | State |
| May 27, 2026 | Incomplete | State |
| June 18, 2025 | Pass | State |
| June 17, 2025 | Pass | State |
| May 3, 2024 | Pass | State |
| May 2, 2024 | Pass | State |
| May 11, 2023 | Pass | State |
| May 11, 2023 | Pass | State |
| August 24, 2022 | Pass | State |
| August 24, 2022 | Pass | State |
| August 4, 2021 | Pass | State |
| August 4, 2021 | Pass | State |
| August 5, 2020 | Pass | State |
| August 5, 2020 | Pass | State |
| August 7, 2019 | Pass | State |
| August 7, 2019 | Pass | State |
| August 8, 2018 | Pass | State |
| August 7, 2018 | Pass | State |
| August 3, 2017 | Pass | State |
| August 3, 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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How we handle your data → Privacy
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 110015655209 there.
Nearby on the register
- Air-emissions sources in Rockingham County
- Every source record in Rockingham County, A to Z
- Air-emissions sources in New Hampshire
- Every source record in New Hampshire, A to Z
Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.