Facility	City	Industry	Status	Distance
Northrop Grumman Systems Corporation- Troy Hill 2 (ste 2a)	Elkridge	Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334511	UNVERIFIED	0.0 KM
Northrop Grumman Systems Corporation - Troy Hill 1	Elkridge	Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334511	LIKELY ACTIVE	0.4 KM
Northrop Grumman Systems CORP -troy Hill 4	Elkridge	Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334511	UNVERIFIED	0.3 KM
Teledyne Flir Defense, INC.	Elkridge	Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334511	LIKELY ACTIVE	0.4 KM
Ngms-q953	Elkridge	Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334511	LIKELY ACTIVE	0.5 KM

Every listed plant in Howard County

Also at this address

No other federal record shares this street address.

WHERE THIS RECORD COMES FROM — 1 FEDERAL SOURCE, 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 · EPA site type STATIONARY.

Source	Evidence	First seen	Last seen
EPA FRS	EXISTENCE	APR 2026	APR 2026

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.

Report a correction · Request removal