EPA Air · stack tests by state, industry and year
Professional, scientific and technical services (NAICS 5417): stack tests in Delaware, 2026
- 9Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row is one stack test recorded during 2026 at a Delaware source whose primary industry code is NAICS 5417. A facility filing more than one industry code is counted under the first one on its record.
Professional, scientific and technical services (NAICS 5417) in Delaware, other years
Other industries in Delaware, 2026
- Utilities (NAICS 2211) 55
- Chemical manufacturing (NAICS 3251) 6
- Petroleum and coal products manufacturing (NAICS 3241) 3
Air-emissions stack tests recorded in Delaware, 2026
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2026-05-07 | DUPONT EXPERIMENTAL STATION | WILMINGTON, New Castle, DE | Pass | State |
| 2026-05-07 | DUPONT EXPERIMENTAL STATION | WILMINGTON, New Castle, DE | Pass | State |
| 2026-05-07 | DUPONT EXPERIMENTAL STATION | WILMINGTON, New Castle, DE | Pass | State |
| 2026-05-06 | DUPONT EXPERIMENTAL STATION | WILMINGTON, New Castle, DE | Pass | State |
| 2026-05-06 | DUPONT EXPERIMENTAL STATION | WILMINGTON, New Castle, DE | Pass | State |
| 2026-05-06 | DUPONT EXPERIMENTAL STATION | WILMINGTON, New Castle, DE | Pass | State |
| 2026-05-05 | DUPONT EXPERIMENTAL STATION | WILMINGTON, New Castle, DE | Pass | State |
| 2026-05-05 | DUPONT EXPERIMENTAL STATION | WILMINGTON, New Castle, DE | Pass | State |
| 2026-05-05 | DUPONT EXPERIMENTAL STATION | WILMINGTON, New Castle, DE | Pass | State |
Primary NAICS code as filed on the facility record; dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.