Facility	City	Industry	Status	Distance
C3 Nano, Incorporated	Hayward	Semiconductor and Related Device Manufacturing 334413	UNVERIFIED	0.2 KM
EKC Technology - Hayward Eden	Hayward	Semiconductor and Related Device Manufacturing 334413	LIKELY ACTIVE	0.5 KM
EKC Technology - Hayward Trust	Hayward	Semiconductor and Related Device Manufacturing 334413	LIKELY ACTIVE	0.7 KM
Ampex Data Systems Corporation	Hayward	Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables 334513	ACTIVE	0.8 KM
Thermionics Laboratory, INC.	Hayward	Semiconductor Machinery Manufacturing 333242	ACTIVE	1.1 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.

East Asia Investment LLC Dba Ultrasil LLC

Hayward, CA

UNVERIFIED334413

Where this record comes from

3 sources hold this plant, and 9 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 CA-ENVIROVIEW, RCRAINFO · EPA site type STATIONARY.

The company’s own websiteOPERATING
first seen JUL 2026 · last seen OCT 2026
SAM.gov entity registrationOPERATING
Record GMYJZMLSPJK5 · first seen DEC 2025 · last seen DEC 2025
EPA Facility Registry ServiceEXISTENCE
Record 110065821294 · first seen OCT 2015 · last seen OCT 2015

ALSO RECORDED ASULTRASIL CORPORATION

IN ALAMEDA COUNTY228 other plants share this one’s industry (Semiconductor and Other Electronic Component Manufacturing, NAICS 3344); 44 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.

NameSOURCES DISAGREE: EPA: ULTRASIL CORPORATION · JUL 2026; SAM.gov: ULTRASIL, LLC · DEC 2025 · ON THIS PAGE
Street address: EPA: 3527 BREAKWATER AVE · JUL 2026 · ON THIS PAGE; SAM.gov: 3527 BREAKWATER AVE · DEC 2025 · ON THIS PAGE
City: EPA: HAYWARD · JUL 2026 · ON THIS PAGE; SAM.gov: HAYWARD · DEC 2025 · ON THIS PAGE
State: EPA: CA · JUL 2026 · ON THIS PAGE; SAM.gov: CA · DEC 2025 · ON THIS PAGE
County (FIPS code): EPA: 06001 · SEP 2026
Coordinates: EPA: 37.628656,-122.121459 · JUL 2026
Website: SAM.gov: http://www.ultrasil.com · DEC 2025
CAGE code: SAM.gov: 3ENU1 · DEC 2025
SAM registration expires: SAM.gov: 2026-12-12 · DEC 2025

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