Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NORTHROP GRUMMAN SYSTEMS CORP
401 E HENDY AVE, SUNNYVALE, CA, 94086
Parent company: NORTHROP GRUMMAN CORP
Carcinogen
— EPA classifications across all reporting years
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 | Acetone | Ammonia | Chromium compounds (except for chromite ore mined in the Transvaal Region) | Total (lbs) |
| 2024 | — | — | — | 999 | — | 1,000 |
| 2023 | — | — | — | 1,451 | — | 1,454 |
| 2022 | — | — | — | — | — | 1 |
| 2021 | — | — | — | — | — | 2 |
| 2020 | — | — | — | — | — | 2 |
| 2019 | — | — | — | — | — | 2 |
| 2018 | — | — | — | — | — | 1 |
| 2017 | — | — | — | — | 1 | 3 |
| 2016 | — | — | — | — | 1 | 2 |
| 2015 | — | — | — | — | 1 | 1 |
| 2014 | — | — | — | — | 1 | 2 |
| 2013 | — | — | — | — | 0 | 0 |
| 2012 | — | — | — | — | 1 | 1 |
| 2011 | — | — | — | — | 1 | 1 |
| 2010 | — | — | — | — | 2 | 2 |
| 2008 | — | — | — | — | 1 | 1 |
| 2006 | — | — | — | — | 1 | 27 |
| 2005 | — | — | — | — | 11 | 22 |
| 2004 | — | — | — | — | 18 | 18 |
| 2003 | — | — | — | — | 27 | 27 |
| 2002 | — | — | — | — | 9 | 9 |
| 1992 | — | 8,090 | — | — | — | 8,090 |
| 1991 | 7,350 | 7,460 | — | — | — | 14,810 |
| 1990 | 8,340 | 10,250 | 8,600 | — | — | 27,190 |
| 1989 | 18,100 | 32,400 | 8,360 | — | — | 58,860 |
| 1988 | 25,550 | — | — | — | — | 25,550 |
| 1987 | 46,300 | 32,000 | — | — | — | 78,300 |
▎ 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.