EPA TRI Facility · Computers and Electronic Products
Northrop Grumman Systems Corp. - Troy Hill 4
Elkridge, MD · Parent: Northrop Grumman Corp
- Total releases
- 0 lbs
- Chemicals reported
- 0
- Carcinogens
- 1
- Primary pathway
- Off-site Transfers
MIXED Form-R mix
Northrop Grumman Systems Corp. - Troy Hill 4: how the 0 lbs splits
0 lbs across all reported pathways
- Off-site Transfers 0 lbs 63.4%
- Air Releases 0 lbs 36.6%
Northrop Grumman Systems Corp. - Troy Hill 4's 0 lbs Form-R total is MIXED - off-site transfers is 63.4% of the bar. Next segment: air releases at 36.6%. Leading chemical by pounds: Lead.
TRACE volume MIXED pathway CLEAN
Northrop Grumman Systems Corp. - Troy Hill 4 is an EPA Toxics Release Inventory reporter in Elkridge, MD, in the computers and electronic products sector. It reported 0 lbs of releases across 1 chemical in 2024. That ranks 21,547 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Precoat Metals; Elite Spice Inc.; Elite Spice Inc.; Tate Access Floors Inc.. Similar-scale Computers and Electronic Products peers outside Maryland: Advanced Circuits Inc; Platronics Seals/tech Ceram; Hybrid Design Associates; A&a Electronics Assembly. Other Northrop Grumman Corp sites in this extract: Northrop Grumman Systems Corp - Promontory; Northrop Grumman Systems Corp (new River Energetics); Allegany Ballistics Lab (nirop); Northrop Grumman Systems Corp - Bacchus. Largest disclosed chemicals by pounds: Lead.
Compare Northrop Grumman Systems Corp. - Troy Hill 4 with
Nearest reporters in Maryland
- Precoat Metals Elkridge · 8.6K lbs
- Elite Spice Inc. Jessup · 515 lbs
- Elite Spice Inc. Hanover · 2.9K lbs
- Tate Access Floors Inc. Jessup · 751 lbs
Similar-scale Computers and Electronic Products sites elsewhere: Advanced Circuits Inc (AZ) · Platronics Seals/tech Ceram (AZ) · Hybrid Design Associates (AZ)
Northrop Grumman Systems Corp. - Troy Hill 4 is a TRACE-volume Form-R filer in Elkridge, MD (Computers and Electronic Products): disclosures on file without reported release pounds. Silence on pounds is not a clearance finding. All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Advanced Circuits Inc and Platronics Seals/tech Ceram.
Northrop Grumman Systems Corp. - Troy Hill 4 vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
0 lbs 0th percentile higher than 0% of 25,986 reporting TRI facilities
Each bar is a $1M-wide band; taller bars hold more reporting TRI facilities. The dashed line and filled bar mark this facility. Hover, focus, or tap a bar for its full count, share, and position.
Source U.S. Environmental Protection Agency, Toxics Release Inventory · 2023 reporting year
Northrop Grumman Systems Corp. - Troy Hill 4: zero-pound Form-R filing
According to the EPA Toxics Release Inventory, Northrop Grumman Systems Corp. - Troy Hill 4 filed Form R disclosures without reporting any release volume, one of 760 Computers and Electronic Products facilities in this database. A zero total means nothing was reported under EPCRA Section 313, not that the site was assessed and found clean. Scale peers outside Maryland include Advanced Circuits Inc and Platronics Seals/tech Ceram.
Zero-pound filings still appear in the TRI extract; they are not a clearance finding. Compare Precoat Metals before treating silence as clean.
Northrop Grumman Systems Corp. - Troy Hill 4 Form-R facts
Compare this facility
See how Northrop Grumman Systems Corp. - Troy Hill 4 stacks up against nearby facilities and the typical reporter.
100% less than the comparison
100% less than the comparison
Comparison reflects reported pounds and chemical counts, not toxicity or health risk. Averages cover facilities reporting any release.
How does this facility release toxic chemicals?
How Northrop Grumman Systems Corp. - Troy Hill 4 releases toxic chemicals into the environment. Total: 0 lbs.
Chemical Releases
Aggregated across all reporting years (2024–2024). 1 of 1 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Lead | 0 lbs | Carcinogen |
Northrop Grumman Systems Corp. - Troy Hill 4 in Howard
Nearest TRI Facilities to Northrop Grumman Systems Corp. - Troy Hill 4
Closest other reporters in Maryland - including Precoat Metals, Elite Spice Inc., Elite Spice Inc., ordered by distance.
Showing 8 of 152 other reporting facilities in Maryland.
Similar Computers and Electronic Products Facilities
Other Computers and Electronic Products facilities with similar total release volumes (±80%), outside Maryland - e.g. Advanced Circuits Inc, Platronics Seals/tech Ceram, Hybrid Design Associates.
Other Northrop Grumman Corp Facilities
Same-parent TRI sites ranked by reported releases - including Northrop Grumman Systems Corp - Promontory, Northrop Grumman Systems Corp (new River Energetics), Allegany Ballistics Lab (nirop).
About TRI Data
Data as of 2023 reporting year. Source: U.S. Environmental Protection Agency (EPA) Toxic Release Inventory.
On this page the largest disclosed chemicals include Lead; nearby reporters include Precoat Metals. Northrop Grumman Systems Corp. - Troy Hill 4 stamps TRACE volume · MIXED pathway · CLEAN carcinogen-lbs on this Form-R extract. Totals are self-reported estimates under EPCRA §313, not measured stack emissions or a health-risk score.
Use and verify this record
This Northrop Grumman Systems Corp. - Troy Hill 4 TRI extract (TRACE · MIXED · CLEAN · lead Lead) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Northrop Grumman Systems Corp. - Troy Hill 4 totals are self-reported EPCRA §313 estimates for Elkridge, MD. NAICS 334511 · Computers and Electronic Products. Pounds ≠ exposure.
Northrop Grumman Systems Corp. - Troy Hill 4 is a TRACE Form-R filer with no reported pounds in this extract. PlainEnviro renders the EPA row as filed - zero pounds is not a clearance finding. Corrections route through the editorial policy.
All federal data sources used on this page
- EPA Toxics Release Inventory (TRI) Basic Data Files - annual self-reported chemical-release filings. epa.gov
- EPA TRI Program reference - how chemicals and reported releases are counted. epa.gov
- EPA Facility Registry Service - facility location and identity. epa.gov
- EPA ECHO - regulatory and compliance context. epa.gov
- EPA Envirofacts - the EPA data warehouse exposing these datasets. epa.gov