Facility	City	Industry	Status	Distance
Nanophase Romeoville site	Romeoville	Other Basic Inorganic Chemical Manufacturing 325180	LIKELY ACTIVE	0.1 KM
Floor Chem INC	Romeoville	All Other Basic Organic Chemical Manufacturing 325199	ACTIVE	0.2 KM
Nanophase Technologies Corporation	Bolingbrook	Other Basic Inorganic Chemical Manufacturing 325180	LIKELY ACTIVE	0.7 KM
Matheson - Lemont Hyco	Romeoville	Industrial Gas Manufacturing 325120	UNVERIFIED	3.4 KM
The Linde Group	Romeoville	Industrial Gas Manufacturing 325120	UNVERIFIED	3.7 KM

Every listed plant in Will 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.

Nanophase Romeoville site

Romeoville, IL

LIKELY ACTIVE325180EMP 20-99

WHERE THIS RECORD COMES FROM — 3 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 ACES, AIR, AIRS/AFS, BR, EIS, NPDES, RCRAINFO, TRIS, TSCA · EPA site type STATIONARY.

Source	Evidence	First seen	Last seen
EPA TRI	OPERATING	DEC 2023	DEC 2023
EPA ECHO	OPERATING	MAY 2019	MAY 2019
EPA FRS	EXISTENCE	JUN 2017	JUN 2017

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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