Clean Air Act stationary source · ICIS-AIR PA000666039
HEIDELBERG MTLS NORTHEAST PA / GLEN MILLS HMA PLT, Glen Mills, PA: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Synthetic minor sourceEmissions classification
- Violation w/in 1 YearCurrent violation status, as filed
- 18Compliance evaluations since January 1, 2017
- 0High-priority violations since January 1, 2017
- 3Formal enforcement actions since January 1, 2017
HEIDELBERG MTLS NORTHEAST PA / GLEN MILLS HMA PLT, at 523 FORGE RD, Glen Mills in Delaware County, Pennsylvania, is an operating synthetic minor 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 “Violation w/in 1 Year”. Delaware 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 | HEIDELBERG MTLS NORTHEAST PA / GLEN MILLS HMA PLT |
|---|---|
| ICIS-AIR ID | PA000666039 |
| EPA facility registry ID | 110046463457 |
| Operating status | Operating |
| Emissions classification | Synthetic minor source |
| Current violation status (ICIS-AIR high-priority violation field) | Violation w/in 1 Year |
| Address | 523 FORGE RD, Glen Mills, PA 19342-8831 |
| County | Delaware County |
| In a nonattainment county | Yes (EPA Green Book) |
| Industry (NAICS) | Petroleum and coal products manufacturing (NAICS 3241) |
| SIC code | 2951 |
| 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 include its program, pollutant and Title V certification files, so this page does not list the Clean Air Act programs HEIDELBERG MTLS NORTHEAST PA / GLEN MILLS HMA PLT 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
- 18Evaluations since January 1, 2017
- 5Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| June 29, 2026 | FCE On-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| June 16, 2026 | PCE On-Site Monitoring/Sampling | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| November 19, 2025 | PCE On-Site Monitoring/Sampling | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| February 16, 2024 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| November 29, 2023 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| November 14, 2023 | FCE On-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| October 27, 2023 | PCE On-Site Monitoring/Sampling | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 24, 2023 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| August 29, 2022 | FCE On-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| January 31, 2022 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| March 8, 2021 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| February 5, 2019 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| December 4, 2018 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| October 23, 2018 | FCE On-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| February 2, 2018 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| July 21, 2017 | FCE On-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| February 6, 2017 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| January 25, 2017 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
Violations
- 2Violation 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.
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| June 16, 2026 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| November 29, 2023 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
Enforcement and penalties
3 formal enforcement actions since January 1, 2017, 2 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 |
|---|---|---|---|
| December 6, 2024 | Administrative Order | State | $59,558 |
| December 20, 2019 | Administrative Order | State | $9,175 |
| October 17, 2018 | Administrative Order | State | $0 |
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| July 7, 2026 | Notice of Violation | State |
| November 29, 2023 | Notice of Violation | State |
| January 3, 2017 | Notice of Violation | State |
Stack tests
- 3Stack tests since January 1, 2017
- 1Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| July 1, 2025 | Pass | State |
| October 23, 2018 | Pass | State |
| November 1, 2017 | Fail | 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 110046463457 there.
Nearby on the register
- Air-emissions sources in Delaware County
- Every source record in Delaware County, A to Z
- Air-emissions sources in Pennsylvania
- Every source record in Pennsylvania, A to Z
Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.