EPA Air · by state and industry
Nonmetallic mineral product manufacturing (NAICS 3274) air sources in Maryland
- 5Facilities
Permitted air-emissions sources in Maryland whose primary industry code is NAICS 3274. A facility filing more than one industry code is counted under the first one on its record, so a plant with several lines appears once, under the line EPA lists first.
Inspections of nonmetallic mineral product manufacturing (naics 3274) in Maryland, by year
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source.
- 2025 — inspections 3
- 2024 — inspections 7
- 2023 — inspections 7
- 2022 — inspections 8
- 2021 — inspections 6
- 2020 — inspections 10
- 2019 — inspections 7
- 2018 — inspections 7
- 2017 — inspections 11
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| DYNA CORPORATION | Minor source | No |
| GOLD BOND BUILDING PRODUCTS, LLC | Major source | No |
| NEW NGC DBA NATIONAL GYPSUM | Minor source | No |
| PATUXENT SAND CO. | Minor source | No |
| UNITED STATES GYPSUM COMPANY | Major source | No |
Primary NAICS code as filed on the facility record. Figures from EPA’s ICIS-AIR download.