Clean Air Act stationary source · ICIS-AIR MD0000002451000076
W. R. GRACE & CO. - CONN., Curtis Bay, MD: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Major sourceEmissions classification
- No Violation IdentifiedCurrent violation status, as filed
- 43Compliance evaluations since January 1, 2017
- 1High-priority violations since January 1, 2017
- 1Formal enforcement actions since January 1, 2017
W. R. GRACE & CO. - CONN., at 5500 CHEMICAL RD, Curtis Bay in Baltimore (city) County, Maryland, 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”. 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 | W. R. GRACE & CO. - CONN. |
|---|---|
| ICIS-AIR ID | MD0000002451000076 |
| EPA facility registry ID | 110072196505 |
| Operating status | Operating |
| Emissions classification | Major source |
| Current violation status (ICIS-AIR high-priority violation field) | No Violation Identified |
| Address | 5500 CHEMICAL RD, Curtis Bay, MD 21226 |
| County | Baltimore (city) County |
| In a nonattainment county | No (EPA Green Book) |
| Industry (NAICS) | Chemical manufacturing (NAICS 3251) |
| EPA region | 03 |
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 W. R. GRACE & CO. - CONN. 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
- 43Evaluations since January 1, 2017
- 6Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| July 22, 2026 | FCE On-Site | U.S. EPA | MACT Standards (40 CFR Part 63); New Source Performance Standards; Operating Permits |
| April 10, 2025 | FCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 12, 2025 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 12, 2024 | PCE Off-Site | State | 40 CFR Part 63 Area Sources; New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| July 30, 2024 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 12, 2024 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 9, 2023 | FCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 7, 2023 | PCE Off-Site | State | 40 CFR Part 63 Area Sources; New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| July 31, 2023 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 17, 2023 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| November 16, 2022 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 5, 2022 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 14, 2022 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 24, 2021 | PCE Off-Site | State | New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 10, 2021 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| April 26, 2021 | FCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| January 20, 2021 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| December 22, 2020 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| October 9, 2020 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| September 4, 2020 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| September 10, 2019 | FCE On-Site | State | 40 CFR Part 63 Area Sources; New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 26, 2019 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| July 3, 2019 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| April 2, 2019 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| January 24, 2019 | PCE On-Site | State | 40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| December 3, 2018 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| October 26, 2018 | PCE On-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| July 10, 2018 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 16, 2018 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| September 20, 2017 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| August 11, 2017 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| July 14, 2017 | FCE On-Site | State | 40 CFR Part 63 Area Sources; New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| July 5, 2017 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 28, 2017 | PCE On-Site | State | 40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 15, 2017 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 8, 2017 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 2, 2017 | PCE On-Site | State | 40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 26, 2017 | PCE On-Site | State | 40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 24, 2017 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 18, 2017 | PCE On-Site | State | 40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 12, 2017 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 11, 2017 | PCE On-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 16, 2017 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
Violations
- 1Violation determinations since January 1, 2017
- 1Of 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 15, 2024 | HPV day-zero determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
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 |
|---|---|---|---|
| July 30, 2024 | Administrative Order | State | $47,000 |
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| February 15, 2024 | Notice of Violation | State |
Stack tests
- 15Stack tests since January 1, 2017
- 0Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| January 21, 2026 | Pass | State |
| August 16, 2024 | Pass | State |
| July 11, 2024 | Pass | State |
| April 19, 2024 | Pass | State |
| October 10, 2023 | Pass | State |
| July 26, 2023 | Pass | State |
| June 21, 2022 | Pass | State |
| October 14, 2021 | Pass | State |
| June 21, 2021 | Pass | State |
| June 16, 2021 | Pass | State |
| June 16, 2020 | Pass | State |
| October 30, 2019 | Pass | State |
| June 20, 2018 | Pass | State |
| June 18, 2018 | Pass | State |
| August 24, 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.
Watch this source
One source, $99/month. A source: the register entry for a plant, refinery, kiln, generating station, or other fixed installation the agency tracks under the Clean Air Act. Choose “One source” and enter this source’s ICIS-AIR ID, MD0000002451000076.
Start the watch
- One source — $99/month
- One county — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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 110072196505 there.
Nearby on the register
- Air-emissions sources in Baltimore (city) County
- Every source record in Baltimore (city) County, A to Z
- Air-emissions sources in Maryland
- Every source record in Maryland, A to Z
Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.