ICIS-AIR PA000254888
HEIDELBERG MTLS NORTHEAST PA /GLEN MILLS QUARRY, 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
- 42Compliance evaluations since January 1, 2017
- 0High-priority violations since January 1, 2017
- 4Formal enforcement actions since January 1, 2017
HEIDELBERG MTLS NORTHEAST PA /GLEN MILLS QUARRY is on EPA’s ICIS-AIR register at 523 FORGE RD, Glen Mills in Delaware County, Pennsylvania: operating status operating, emissions classification synthetic minor source, current violation status “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.
What stands out
- The newest of the 61 events on file is a formal enforcement action dated September 10, 2026.
- Its events on file run from March 29, 2017 through September 10, 2026.
- Of the 4 formal enforcement actions on file, 4 carry a filed penalty above zero. The largest on file is $59,558, filed December 6, 2024.
- Of its 42 compliance evaluations on file, 5 are a full compliance evaluation.
- The register holds 253 air-emissions sources in Delaware County, Pennsylvania.
Every line is computed by formula from the record’s stored figures; nothing is estimated.
Identity
| Facility as filed | HEIDELBERG MTLS NORTHEAST PA /GLEN MILLS QUARRY |
|---|---|
| ICIS-AIR ID | PA000254888 |
| EPA facility registry ID | 110001061225 |
| Operating status | Operating |
| Emissions classification | Synthetic minor source |
| Current violation status (HPV 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) | Mining and quarrying (NAICS 2123) |
| SIC code | 1423 |
| EPA region | 03 |
Programs and pollutants
The program, pollutant and Title V files are not loaded: what this page covers.
Compliance evaluations
- 42Evaluations 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 |
| May 14, 2026 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| May 19, 2025 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| December 13, 2024 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| October 25, 2024 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 23, 2024 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 12, 2024 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 1, 2024 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| March 4, 2024 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| January 29, 2024 | FCE On-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| January 8, 2024 | PCE On-Site Monitoring/Sampling | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 26, 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 |
| April 6, 2022 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| March 22, 2022 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| December 29, 2021 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| December 1, 2021 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| June 21, 2021 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| June 14, 2021 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 22, 2020 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 20, 2020 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| October 30, 2019 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| October 25, 2019 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| October 17, 2019 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| October 11, 2019 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| July 24, 2019 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| July 10, 2019 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| May 3, 2019 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| May 2, 2019 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 11, 2019 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| March 6, 2019 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| January 24, 2019 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| October 24, 2018 | FCE On-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| August 2, 2018 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| March 29, 2018 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| December 27, 2017 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| November 3, 2017 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| September 21, 2017 | PCE On-Site Monitoring/Sampling | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| September 12, 2017 | PCE On-Site Monitoring/Sampling | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| August 9, 2017 | FCE On-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| March 29, 2017 | PCE Off-Site | State | New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
Violations
- 8Violation determinations since January 1, 2017
- 0Of them high-priority
What high-priority and federally reportable violations mean.
| 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 |
| December 13, 2024 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| October 25, 2024 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| January 29, 2024 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| June 21, 2021 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| July 10, 2019 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| April 11, 2019 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| September 21, 2017 | Earliest FRV determination | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
Enforcement and penalties
4 of the formal enforcement actions carry a penalty filed above zero. How a penalty is shown.
| Date | What EPA recorded | Agency | Penalty, as filed |
|---|---|---|---|
| September 10, 2026 | Administrative Order | State | $8,200 |
| December 6, 2024 | Administrative Order | State | $59,558 |
| May 23, 2022 | Administrative Order | State | $2,400 |
| December 20, 2019 | Administrative Order | State | $9,175 |
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| July 7, 2026 | Notice of Violation | State |
| December 18, 2024 | Notice of Violation | State |
| February 12, 2024 | Notice of Violation | State |
| June 25, 2021 | Notice of Violation | State |
| April 18, 2019 | Notice of Violation | State |
| October 5, 2017 | Notice of Violation | State |
Stack tests
- 1Stack tests since January 1, 2017
- 0Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| August 3, 2017 | Pass | State |
Watch HEIDELBERG MTLS NORTHEAST PA /GLEN MILLS QUARRY
Free from EPA: Detailed Facility Report, ECHO Notify (registry ID 110001061225).
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EPA ICIS-AIR download, loaded September 14, 2026.