Northrop Grumman Systems CORP -troy Hill 4
7150 Troy Hill Dr, Elkridge, MD 21075
Present in a source dataset, with no recent operating signal.
What they make
Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing334511Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Ngms-q953 | Elkridge | Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334511 | LIKELY ACTIVE | 0.2 KM |
| Northrop Grumman Systems Corporation - Troy Hill 1 | Elkridge | Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334511 | LIKELY ACTIVE | 0.5 KM |
| Teledyne Flir Defense, INC. | Elkridge | Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334511 | LIKELY ACTIVE | 0.5 KM |
| Proex Services LLC | Elkridge | Other Fabricated Wire Product Manufacturing 332618 | ACTIVE | 1.7 KM |
| Phillips Corporation | Hanover | Machine Tool Manufacturing 333517 | ACTIVE | 2.3 KM |
Also at this address
No other federal record shares this street address.
Where this record comes from
2 sources hold this plant, and 7 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 NPDES, RCRAINFO, TRIS · EPA site type STATIONARY.
- EPA ECHO compliance recordsOPERATINGfirst seen JUL 2024 · last seen JUL 2024
- EPA Facility Registry ServiceEXISTENCERecord 110033627056 · first seen FEB 2010 · last seen FEB 2010
IN HOWARD COUNTY36 other plants share this one’s industry (Navigational, Measuring, Electromedical, and Control Instruments Manufacturing, NAICS 3345); 14 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.
- Name
- EPA: NORTHROP GRUMMAN SYSTEMS CORP -TROY HILL 4 · NOV 2026
- Street address
- EPA: 7150 TROY HILL DR · NOV 2026
- City
- EPA: ELKRIDGE · NOV 2026
- State
- EPA: MD · NOV 2026
- County (FIPS code)
- EPA: 24027 · NOV 2026
- Coordinates
- EPA: 39.19581,-76.75282 · NOV 2026
- Hazardous waste generator (RCRA)
- EPA ECHO: LQG · NOV 2026