Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NORTHROP CORP AIRCRAFT DIV
1515 RANCHO CONEJO BLVD, NEWBURY PARK, CA, 913200500
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 | Methyl ethyl ketone | Ammonia | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Total (lbs) | |
| 1990 | 43,080 | — | 1,300 | 10 | 44,390 | |
| 1989 | 48,000 | — | — | — | 48,000 | |
| 1988 | — | 12,250 | — | — | 12,250 | |
▎ 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.