Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NORTHROP CORP ELECTRONICS SYSTEMS DIV
111 MORSE ST, NORWOOD, MA, 02062
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) | ||||
| 1991 | 9,199 | 9,199 | ||||
| 1990 | 10,600 | 10,600 | ||||
| 1988 | 4,350 | 4,350 | ||||
| 1987 | 5,800 | 5,800 | ||||
▎ 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.