Tst INC
11601 Etiwanda Ave, Fontana, CA 92337
ACTIVELAST SEEN IN FEDERAL DATA JAN 2026 · 4 SOURCES
Operating signal within 12 months from two or more independent sources.
What they make
Alumina Refining and Primary Aluminum Production331313Where it is
34.04408, -117.52186 · CENSUS TIGER
COUNTY
METRO AREA
ON GOOGLE MAPS
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Sierra Aluminum - NAPA | Fontana | Other Aluminum Rolling, Drawing, and Extruding 331318 | LIKELY ACTIVE | 0.5 KM |
| Sierra Aluminum - Bonanza | Fontana | Other Aluminum Rolling, Drawing, and Extruding 331318 | LIKELY ACTIVE | 0.5 KM |
| Sierra Aluminum- Finishing | Fontana | Alumina Refining and Primary Aluminum Production 331313 | LIKELY ACTIVE | 0.6 KM |
| Sierra Aluminum Company | Fontana | Alumina Refining and Primary Aluminum Production 331313 | UNVERIFIED | 0.7 KM |
| Sierra Aluminum - Union | Fontana | Other Aluminum Rolling, Drawing, and Extruding 331318 | LIKELY ACTIVE | 0.7 KM |
Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 4 FEDERAL SOURCES, 7 FIELDS
Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.
EPA cross-references this facility in AIR, AIRS/AFS, BR, CA-ENVIROVIEW, CEDRI, EPS, HWTS-DATAMART, ICIS, NPDES, RCRAINFO, TRIS, TSCA · EPA site type STATIONARY.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| EPA ECHO | OPERATING | JAN 2026 | JAN 2026 |
| OSHA ITA | OPERATING | DEC 2025 | DEC 2025 |
| EPA FRS | EXISTENCE | JUL 2020 | AUG 2024 |
| EPA TRI | OPERATING | DEC 2023 | DEC 2023 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | EPA FRS | JUL 2026 |
| CITY | EPA FRS | JUL 2026 |
| EMPLOYEE BAND | OSHA ITA | DEC 2025 |
| GEOM | EPA FRS | JUL 2026 |
| NAME | EPA FRS | JUL 2026 |
| RCRA GENERATOR STATUS | EPA ECHO | AUG 2026 |
| STATE | EPA FRS | JUL 2026 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.