Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
AK STEEL BUTLER WORKS
BANTAM AVE, BUTLER, PA, 160010832
Parent company: AK STEEL 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 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | Nitric acid | Hydrogen fluoride | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Chromium | Total (lbs) |
| 2003 | 170,000 | — | 1,080 | — | — | 171,286 |
| 2002 | 330,000 | — | 2,130 | — | — | 332,511 |
| 2001 | 320,000 | — | 2,700 | — | — | 323,117 |
| 2000 | 4,300,000 | 16,380 | 2,400 | — | — | 4,319,246 |
| 1999 | 4,500,000 | 19,460 | 2,180 | — | — | 4,522,138 |
| 1998 | 3,600,000 | 19,380 | 2,080 | — | — | 3,621,823 |
| 1997 | 3,800,000 | 80,800 | 8,000 | — | — | 3,889,177 |
| 1996 | 3,000,000 | 77,800 | 7,700 | — | — | 3,085,629 |
| 1995 | 2,700,000 | 75,800 | 133,502 | — | 310 | 2,909,792 |
| 1994 | — | 15,800 | 1,700 | 370 | 490 | 18,402 |
| 1993 | — | 14,569 | 1,699 | 1,733 | 310 | 18,431 |
| 1992 | — | 13,510 | 1,580 | 1,570 | 220 | 17,210 |
| 1991 | — | 32,040 | 1,096 | 1,380 | 180 | 35,026 |
| 1990 | — | 30,250 | 12,250 | 640 | 190 | 43,490 |
| 1989 | — | 39,835 | 3,901 | 698 | 110 | 44,581 |
▎ 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.