EPA Air · stack tests by state, industry and year
Chemical manufacturing (NAICS 3254): stack tests in Puerto Rico, 2026
- 4Stack 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 Puerto Rico source whose primary industry code is NAICS 3254. A facility filing more than one industry code is counted under the first one on its record.
Chemical manufacturing (NAICS 3254) in Puerto Rico, other years
Air-emissions stack tests recorded in Puerto Rico, 2026
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2026-08-24 | BAXTER HEALTHCARE OF PUERTO RICO | JAYUYA, Jayuya, PR | Pass | U.S. EPA |
| 2026-08-20 | AYERST-WYETH PHARMACEUTICALS, INC. | GUAYAMA, Guayama, PR | Pass | U.S. EPA |
| 2026-08-18 | AMGEN MANUFACTURING, INC. | JUNCOS, Juncos, PR | Pass | U.S. EPA |
| 2026-07-31 | AMGEN MANUFACTURING, INC. | JUNCOS, Juncos, PR | Pass | U.S. EPA |
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.
What this page shows
This page covers Clean Air Act facilities in the EPA air register with stack tests in state PR for NAICS industry 3254 in 2026. Stack tests recorded in 2026: 3.