Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
US ARMY TCAAP ALLIANT AMMUNITION SYSTEMS CO LLC
TCAAP - BUILDING 104, ARDEN HILLS, MN, 55112
Parent company: ALLIANT TECHSYSTEMS INC
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 | Freon 113 (CFC-113) | Trichloroethylene | Toluene | Methyl ethyl ketone | Total (lbs) |
| 1993 | 165,000 | 26,000 | — | — | — | 191,005 |
| 1992 | 191,614 | 42,104 | — | 10,480 | — | 253,560 |
| 1991 | 143,600 | 84,400 | — | 14,450 | 9,800 | 261,370 |
| 1990 | 137,800 | 96,800 | 48,005 | 15,250 | 10,250 | 322,355 |
| 1989 | 27,950 | 100,800 | 72,950 | 23,800 | 8,250 | 295,750 |
| 1988 | 277,000 | — | 43,100 | 20,400 | 28,900 | 383,900 |
| 1987 | 187,000 | — | — | — | — | 187,000 |
▎ 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.