Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NORTHROP GRUMMAN CORP
1801 SE AIRPORT RD, STUART, FL, 349959015
Parent company: NORTHROP GRUMMAN CORP
Carcinogen
— EPA classifications across all reporting years
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 | 1,1,1-Trichloroethane | Freon 113 (CFC-113) | Dichloromethane | Methyl ethyl ketone | Trichloroethylene | Total (lbs) |
| 1997 | 16,000 | — | 3,630 | 2,500 | — | 22,130 |
| 1996 | 19,040 | — | 10,753 | 10,860 | — | 40,653 |
| 1995 | 17,380 | — | 13,798 | 11,321 | — | 42,499 |
| 1994 | 22,309 | — | 13,620 | 11,522 | — | 47,451 |
| 1993 | 45,432 | — | 14,993 | 12,600 | — | 73,025 |
| 1992 | 42,778 | — | 26,244 | 12,815 | 9,600 | 91,437 |
| 1991 | 41,889 | 46,345 | 32,027 | 16,088 | 18,760 | 155,109 |
| 1990 | 34,183 | 75,078 | 31,990 | 43,470 | 10,629 | 210,848 |
| 1989 | 33,500 | 72,000 | 28,900 | 34,300 | — | 168,700 |
| 1988 | 41,800 | 104,000 | 34 | — | — | 145,834 |
▎ 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.