Facility	City	Industry	Status	Distance
Ultrasil, LLC	Hayward	Semiconductor and Related Device Manufacturing 334413	ACTIVE	0.2 KM
East Asia Investment LLC Dba Ultrasil LLC	Hayward	Semiconductor and Related Device Manufacturing 334413	UNVERIFIED	0.2 KM
Alphabet Energy INC	Hayward	Semiconductor and Related Device Manufacturing 334413	UNVERIFIED	0.3 KM
C3nano	Hayward	Semiconductor and Related Device Manufacturing 334413	UNVERIFIED	0.3 KM
EKC Technology - Hayward Eden	Hayward	Semiconductor and Related Device Manufacturing 334413	LIKELY ACTIVE	0.3 KM

Every listed plant in Alameda County

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 RCRAINFO, TSCA · EPA site type STATIONARY.

Source	Evidence	First seen	Last seen
EPA ECHO	OPERATING	APR 2022	APR 2022
EPA FRS	EXISTENCE	JUN 2018	JUN 2018

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	SEP 2026
STATE	EPA FRS	JUL 2026

Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

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