Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
POWDER RIVER INC
388 E 900 S, PROVO, UT, 84606
Parent company: NA
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 | Xylene (mixed isomers) | 1,2,4-Trimethylbenzene | Toluene | n-Butyl alcohol | Ethylbenzene | Total (lbs) |
| 2004 | 12,629 | 15,055 | — | — | — | 27,684 |
| 2003 | 13,418 | 14,613 | — | — | — | 28,031 |
| 2002 | 7,715 | 14,888 | — | — | — | 22,603 |
| 2001 | 10,866 | 15,611 | — | — | — | 26,477 |
| 2000 | 13,818 | 17,503 | — | — | — | 31,321 |
| 1999 | 14,634 | 11,663 | — | — | — | 26,297 |
| 1998 | 18,530 | 24,138 | — | — | — | 42,668 |
| 1997 | 23,406 | 33,393 | — | — | — | 56,799 |
| 1996 | — | 22,070 | — | — | — | 22,070 |
| 1995 | 57,505 | 17,728 | — | 14,494 | 14,714 | 104,441 |
| 1994 | 23,565 | 55,013 | 10,988 | 16,002 | — | 105,568 |
| 1993 | 19,766 | — | — | — | — | 19,766 |
| 1992 | 23,457 | — | — | — | — | 23,457 |
| 1991 | 27,569 | — | 23,582 | — | — | 51,151 |
| 1990 | 38,500 | — | 12,130 | — | — | 50,630 |
▎ 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.