Facility detail

NORTHROP GRUMMAN SYSTEMS CORP

7323 AVIATION BLVD, LINTHICUM, MD, 21090

Parent company: NORTHROP GRUMMAN CORP

Carcinogen PBT — EPA classifications across all reporting years

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Year-over-year total releases

Reported on-site TRI releases in pounds (lbs), grouped by reporting year.

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	Freon 113 (CFC-113)	Methyl ethyl ketone	Nitric acid	Certain glycol ethers	Total (lbs)
2024	—	—	—	—	—	12
2023	—	—	—	18	—	26
2022	—	—	—	18	—	24
2021	—	—	—	—	—	5
2020	—	—	—	250	—	253
2019	—	—	—	—	—	3
2018	—	—	—	—	—	3
2017	—	—	—	—	—	3
2016	—	—	—	150	—	153
2015	—	—	—	—	—	1
2014	—	—	—	143	—	144
2013	—	—	—	—	—	1
2012	—	—	—	20	—	21
2011	—	—	—	—	—	3
2010	—	—	—	143	—	146
2009	—	—	—	143	—	146
2008	—	—	—	151	—	154
2007	—	—	—	139	—	142
2006	—	—	—	139	—	143
2005	—	—	—	273	—	277
2004	—	—	—	3,100	—	3,105
2003	—	—	—	3,100	—	3,225
2002	—	—	—	3,100	—	3,225
2001	—	—	—	3,100	—	3,233
2000	—	—	—	3,100	—	3,100
1999	—	—	—	3,100	—	3,100
1998	—	—	—	3,100	—	3,100
1997	—	—	—	3,100	—	3,100
1996	—	—	—	3,100	—	3,100
1995	—	—	7,400	3,100	—	10,500
1994	12,600	—	6,900	3,100	—	22,600
1993	63,000	26,000	9,100	3,100	7,500	108,700
1992	109,000	19,400	7,300	3,100	7,400	153,000
1991	128,000	24,000	9,400	3,100	8,400	194,000
1990	152,000	37,000	14,600	3,100	9,400	244,345
1989	184,000	38,600	24,000	3,100	10,780	301,190
1988	—	41,200	19,800	—	—	107,300
1987	—	—	6,600	3,100	—	10,700

▎ 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.