Keystone Engineering CO
4401 Donald Douglas Drive, Long Beach, CA 90808
Present in a source dataset, with no recent operating signal.
What they make
Electroplating, Plating, Polishing, Anodizing, and Coloring332813Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Artistic Silver Plating INC | Signal Hill | Electroplating, Plating, Polishing, Anodizing, and Coloring 332813 | UNVERIFIED | 3.8 KM |
| Lubeco INC | Long Beach | Petroleum Lubricating Oil and Grease Manufacturing 324191 | LIKELY ACTIVE | 6.8 KM |
| Fine Quality Metal Finishing, INC | Long Beach | Electroplating, Plating, Polishing, Anodizing, and Coloring 332813 | LIKELY ACTIVE | 6.3 KM |
| Leon Polish | Paramount | Electroplating, Plating, Polishing, Anodizing, and Coloring 332813 | UNVERIFIED | 8.0 KM |
| Anaplex CORP | Paramount | Electroplating, Plating, Polishing, Anodizing, and Coloring 332813 | LIKELY ACTIVE | 8.1 KM |
Also at this address
No other federal record shares this street address.
Where this record comes from
2 sources hold this plant, and 7 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.
EPA cross-references this facility in BR, CA-ENVIROVIEW, HWTS-DATAMART, NPDES, RCRAINFO, TRIS · EPA site type STATIONARY.
- EPA ECHO compliance recordsOPERATINGfirst seen OCT 2024 · last seen OCT 2024
- EPA Facility Registry ServiceEXISTENCERecord 110000782528 · first seen DEC 2015 · last seen AUG 2024
IN LOS ANGELES COUNTY562 other plants share this one’s industry (Coating, Engraving, Heat Treating, and Allied Activities, NAICS 3328); 96 of them have a size band on record.
What each source says
Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.
- Name
- EPA: KEYSTONE ENGINEERING CO · OCT 2026
- Street address
- EPA: 4401 DONALD DOUGLAS DRIVE · OCT 2026
- City
- EPA: LONG BEACH · OCT 2026
- State
- EPA: CA · OCT 2026
- County (FIPS code)
- EPA: 06037 · OCT 2026
- CoordinatesSOURCES DISAGREE
- Census geocoder: 33.818868863555,-118.139864606546 · SEP 2026
- EPA: 33.81887,-118.14182 · OCT 2026 · ON THIS PAGE
- Hazardous waste generator (RCRA)
- EPA ECHO: SQG · OCT 2026