Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
GRUMMAN ALLIED OLSON DIV
R RTE 1 BOX 441, MONTGOMERY, PA, 177529734
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 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.
| Year | Xylene (mixed isomers) | n-Butyl alcohol | 1,1,1-Trichloroethane | Acetone | Methyl ethyl ketone | Total |
|---|---|---|---|---|---|---|
| 1995 | 6,050 | 3,137 | — | — | 1,708 | 20,515 |
| 1994 | 72,400 | 39,600 | — | — | 21,300 | 247,350 |
| 1993 | 73,800 | 40,318 | — | 122,000 | 21,700 | 337,368 |
| 1992 | 72,700 | 39,600 | 8,750 | 12,000 | 21,600 | 233,200 |
| 1991 | 71,500 | 39,000 | 24,750 | 11,700 | 21,000 | 244,200 |
| 1990 | 70,532 | 38,480 | 66,310 | 11,385 | 20,975 | 282,076 |
| 1989 | 72,120 | 38,580 | 66,360 | 11,890 | 21,050 | 284,750 |
| 1988 | 59,780 | 38,140 | 88,496 | 10,100 | 22,590 | 260,836 |
| 1987 | — | 18,550 | 32,800 | — | 12,600 | 63,950 |