Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NORTHROP GRUMMAN CORP (AG)
3201 WEST 131 ST, HAWTHORNE, CA, 902503177
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 | 1,1,1-Trichloroethane | Total (lbs) | ||||
| 1995 | 54,680 | 54,680 | ||||
| 1994 | 51,100 | 51,100 | ||||
| 1993 | 81,100 | 81,100 | ||||
| 1992 | 138,000 | 138,000 | ||||
| 1991 | 138,000 | 138,000 | ||||
| 1990 | 153,700 | 153,700 | ||||
| 1989 | 25,400 | 25,400 | ||||
| 1988 | 124,250 | 124,250 | ||||
▎ 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.