Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NORTHROP GRUMMAN CORP
2401 W MARSHALL DR, GRAND PRAIRIE, TX, 75051
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 | Methyl ethyl ketone | Toluene | Isopropyl alcohol (only persons who manufacture by the strong acid process are subject, no supplier notification) | Xylene (mixed isomers) | Total (lbs) | |
| 1998 | 13,900 | — | — | — | 13,900 | |
| 1997 | 91,100 | — | 2,800 | — | 93,900 | |
| 1996 | 71,478 | — | — | — | 71,478 | |
| 1995 | 62,262 | — | — | — | 62,262 | |
| 1994 | 65,768 | — | — | — | 65,768 | |
| 1993 | 70,492 | — | — | — | 70,492 | |
| 1992 | 111,088 | 3,582 | — | 1,528 | 116,198 | |
▎ 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.