Facility	City	Industry	Status	Distance
Zygo CORP	Richmond	Commercial and Service Industry Machinery Manufacturing 333310	LIKELY ACTIVE	0.1 KM
Ca141 Zygo Extreme Precision Optics	Richmond	Commercial and Service Industry Machinery Manufacturing 333314	LIKELY ACTIVE	0.1 KM
L-3 Communications Ios - Tinsley	Richmond	Glass Product Manufacturing Made of Purchased Glass 327215	UNVERIFIED	0.2 KM
Attalon Optics, INC.	Richmond	Commercial and Service Industry Machinery Manufacturing 333310	ACTIVE	0.2 KM
523 Rods	Richmond	Commercial and Service Industry Machinery Manufacturing 333318	UNVERIFIED	5.8 KM

Every listed plant in Contra Costa 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.

L-3 Communications Ios - Tinsley

Richmond, CA

UNVERIFIED327215

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 CARB-TCH, EIS · EPA site type FACILITY.

Source	Evidence	First seen	Last seen
OSHA ITA	OPERATING	DEC 2025	DEC 2025
EPA FRS	EXISTENCE	JUL 2024	JUL 2024

FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT

FIELD	SOURCE	SIGNAL
ADDRESS LINE1	EPA FRS	JUL 2026
CITY	EPA FRS	JUL 2026
EMPLOYEE BAND	OSHA ITA	DEC 2025
GEOM	EPA FRS	JUL 2026
NAME	EPA FRS	JUL 2026
STATE	EPA FRS	JUL 2026

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

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