FactoryRegistry
Claim a page

Diamond Foundry LLC Warm Springs

48611 Warm Springs Blvd, Fremont, CA 94539

LIKELY ACTIVELAST SEEN IN FEDERAL DATA DEC 2025 · 2 SOURCES

Operating signal within 24 months, or from a single source.

DirectionsClaim this pageGet the badge

What they make

All Other Miscellaneous Nonmetallic Mineral Product Manufacturing327999

Where it is

37.46729, -121.91670 · CENSUS TIGER
COUNTY
METRO AREA
ON GOOGLE MAPS
STREET VIEW

Other plants nearby

FacilityCityIndustryStatusDistance
Ceramic Tech, INC.FremontPottery, Ceramics, and Plumbing Fixture Manufacturing
327110
ACTIVE3.3 KM
Walters Wolf PrecastFremontConcrete Pipe Manufacturing
327332
LIKELY ACTIVE7.7 KM
Owens Corning Insulating Systems LLCSanta ClaraMineral Wool Manufacturing
327993
UNVERIFIED10.8 KM
Owens CorningSanta ClaraMineral Wool Manufacturing
327993
LIKELY ACTIVE10.8 KM
R.s. Hughes Company, INC.SunnyvaleHardware Manufacturing
332510
LIKELY ACTIVE12.8 KM

Every listed plant in Alameda County

Also at this address

1 other record shares this street address. Separate filings can describe distinct businesses on one site, or the same plant recorded by different agencies, so every record is kept rather than merged away.

Intarsia Corporation
Fremont, CA
UNVERIFIED334413

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 RCRAINFO · EPA site type STATIONARY.

  • OSHA injury and illness reportsOPERATING
    Record 1138554 · first seen DEC 2025 · last seen DEC 2025
  • EPA Facility Registry ServiceEXISTENCE
    Record 110071247733 · first seen APR 2022 · last seen APR 2022

ALSO RECORDED ASDIAMOND FOUNDRY INC

IN ALAMEDA COUNTY30 other plants share this one’s industry (Other Nonmetallic Mineral Product Manufacturing, NAICS 3279); 4 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: DIAMOND FOUNDRY INC · JUL 2026
Street address
EPA: 48611 WARM SPRINGS BLVD · JUL 2026
City
EPA: FREMONT · JUL 2026
State
EPA: CA · JUL 2026
County (FIPS code)
EPA: 06001 · SEP 2026
CoordinatesSOURCES DISAGREE
Census geocoder: 37.467293605984,-121.916697606092 · JUL 2026 · ON THIS PAGE
EPA: 37.466925,-121.916417 · JUL 2026
Employees (band)
OSHA: 20-99 · DEC 2025

Report a correction · Request removal