Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NORTHROP GRUMMAN
2500 W FRYE RD, CHANDLER, AZ, 85224
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 | Acetone | Xylene (mixed isomers) | 2-Ethoxyethanol | Isopropyl alcohol (only persons who manufacture by the strong acid process are subject, no supplier notification) | Phenol | Total (lbs) |
| 1998 | — | 674 | — | — | — | 674 |
| 1997 | — | 8,336 | — | — | 493 | 9,218 |
| 1996 | — | — | — | — | 10 | 10 |
| 1995 | — | — | — | — | 9 | 9 |
| 1994 | — | — | 744 | — | 100 | 844 |
| 1993 | 7,705 | — | 1,405 | — | 100 | 9,210 |
| 1992 | 7,540 | — | 1,370 | — | 100 | 9,010 |
| 1991 | 10,046 | — | 2,093 | — | 100 | 12,239 |
| 1989 | 3,821 | — | 1,223 | 3,714 | 250 | 9,698 |
| 1988 | 6,356 | — | — | — | — | 6,356 |
▎ 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.