Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NORTHROP CORP ELECTRONICS SYSTEMS DIV
2301 W 120TH ST, HAWTHORNE, CA, 902515032
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 | Freon 113 (CFC-113) | 1,1,1-Trichloroethane | Total (lbs) | |||
| 1991 | 12,049 | 7,994 | 20,043 | |||
| 1990 | 12,300 | 6,400 | 18,700 | |||
| 1989 | 49,806 | — | 49,806 | |||
| 1988 | 58,977 | — | 58,977 | |||
▎ 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.