Stewart Superior CORP

What they make

Where it is

Other plants nearby

Facility	City	Industry	Status	Distance
Rs Hughes CO INC	San Leandro	Hardware Manufacturing 332510	● ACTIVE	1.4 KM
Sutton International	San Leandro	All Other Miscellaneous Manufacturing 339999	● ACTIVE	1.9 KM
Energy Recovery, INC.	San Leandro	Pump and Compressor Manufacturing 333911	● ACTIVE	2.0 KM
M.a.r.'s Engineering Company, INC.	San Leandro	Machine Shops 332710	● ACTIVE	2.2 KM
PIPorifera, INC.	San Leandro	Food Product Machinery Manufacturing 333241	◐ LIKELY ACTIVE	2.7 KM

Every listed plant in Alameda County

Also at this address

More than one federal record exists for this street address. The primary record for the site is listed first.

Where this record comes from

1 source holds 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 RCRAINFO · EPA site type STATIONARY.

• EPA Facility Registry ServiceEXISTENCE
  Record 110070413255 · first seen DEC 2018 · last seen DEC 2018

IN ALAMEDA COUNTY88 other plants share this one’s industry (Other Miscellaneous Manufacturing, NAICS 3399); 13 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: STEWART SUPERIOR CORP · OCT 2026

Street address

EPA: 14487 GRIFFITH ST · OCT 2026

City

EPA: SAN LEANDRO · OCT 2026

State

EPA: CA · OCT 2026

County (FIPS code)

EPA: 06001 · OCT 2026

Coordinates

EPA: 37.695412,-122.169164 · OCT 2026

Hazardous waste generator (RCRA)

EPA ECHO: none · NOV 2026