Supreme Steel Treating
2466 Seaman Ave., South El Monte, CA 91733
LIKELY ACTIVELAST SEEN IN FEDERAL DATA — · 2 SOURCES
Operating signal within 24 months, or from a single source.
What they make
Metal Heat Treating332811Where it is
34.05689, -118.05277 · CENSUS TIGER
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Santoshi Corporation dba Alum A Coat | South El Monte | Electroplating, Plating, Polishing, Anodizing, and Coloring 332813 | LIKELY ACTIVE | 0.0 KM |
| Santoshi CORP D.b.a. Alum-a-coat | El Monte | Electroplating, Plating, Polishing, Anodizing, and Coloring 332813 | UNVERIFIED | 0.0 KM |
| Kenneth Ho | South El Monte | Electroplating, Plating, Polishing, Anodizing, and Coloring 332813 | UNVERIFIED | 0.1 KM |
| Santoshi CORP D.b.a. Alum-a-coat | South El Monte | Electroplating, Plating, Polishing, Anodizing, and Coloring 332813 | UNVERIFIED | 0.1 KM |
| Robert P. Martin Company | South El Monte | Other Fabricated Wire Product Manufacturing 332618 | ACTIVE | 0.4 KM |
Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 2 FEDERAL SOURCES, 6 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 CA-CERS, CA-ENVIROVIEW, HWTS-DATAMART, NPDES, RCRAINFO, TRIS · EPA site type STATIONARY.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| EPA ECHO | OPERATING | APR 2025 | APR 2025 |
| EPA FRS | EXISTENCE | DEC 2015 | DEC 2015 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | EPA FRS | JUL 2026 |
| CITY | EPA FRS | JUL 2026 |
| 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.