Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NORTHROP GRUMMAN SYSTEMS CORP
1212 WINTERSON RD, LINTHICUM HEIGHTS, MD, 21090
Parent company: NORTHROP GRUMMAN CORP
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases in pounds (lbs) across all available years.
Full release table
Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.
| All values in pounds (lbs) | ||||||
|---|---|---|---|---|---|---|
| Year | Acetone | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | N-Methyl-2-pyrrolidone | Phosphoric acid | Total (lbs) | |
| 2024 | — | 31 | 6,467 | — | 6,498 | |
| 2023 | — | 26 | 5,610 | — | 5,636 | |
| 2022 | — | 25 | 5,120 | — | 5,145 | |
| 2021 | — | 7,791 | — | — | 7,791 | |
| 2020 | — | 6,817 | — | — | 6,817 | |
| 2019 | — | 7,549 | — | — | 7,549 | |
| 2018 | — | 6,088 | — | — | 6,088 | |
| 2017 | — | 6,818 | — | — | 6,818 | |
| 2016 | — | 9,984 | — | — | 9,984 | |
| 2015 | — | 9,010 | — | — | 9,010 | |
| 1993 | — | 300 | — | — | 300 | |
| 1992 | 9,800 | 300 | — | — | 10,100 | |
| 1991 | 7,500 | 1,000 | — | 250 | 8,750 | |
| 1990 | 12,000 | 1,000 | — | 250 | 13,250 | |
| 1989 | 13,000 | 750 | — | 250 | 14,000 | |
| 1988 | 17,000 | 750 | — | 250 | 18,000 | |
| 1987 | — | 750 | — | — | 750 | |
▎ Facilities report to EPA's TRI once they manufacture, process, or use a listed chemical above set thresholds. Once that threshold is crossed, they must report actual releases regardless of size — so a small number reflects genuine low-level discharge, not a data error.