Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
SUNNYSIDE COGENERATION ASSOCIATES
ONE POWER PLANT RD, SUNNYSIDE, UT, 84539
Parent company: SUNNYSIDE COGENERATION ASSOCIATES
Carcinogen
PBT
— 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 | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | Lead | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Manganese compounds | Total (lbs) |
| 2024 | 53,418 | — | 14,682 | 41,532 | — | 109,717 |
| 2023 | 44,410 | — | 11,534 | — | — | 56,012 |
| 2022 | 55,422 | — | 14,795 | — | — | 70,303 |
| 2021 | 53,425 | — | 13,845 | — | — | 67,347 |
| 2020 | 42,592 | — | 10,864 | — | — | 53,516 |
| 2019 | 52,962 | — | 14,579 | — | — | 67,621 |
| 2018 | 53,937 | — | 14,594 | — | — | 68,614 |
| 2017 | 54,614 | — | 14,573 | — | — | 69,269 |
| 2016 | 52,755 | — | 14,905 | — | — | 67,744 |
| 2015 | 65,431 | — | 15,952 | — | — | 81,475 |
| 2014 | 67,735 | — | 16,236 | — | — | 84,059 |
| 2013 | 63,926 | — | 15,088 | — | — | 79,098 |
| 2012 | 65,923 | — | 16,188 | — | — | 82,200 |
| 2011 | 56,211 | — | 15,069 | — | — | 71,363 |
| 2010 | 49,279 | — | 13,354 | — | — | 62,706 |
| 2009 | 56,067 | — | 15,137 | — | — | 71,307 |
| 2008 | 54,923 | — | 14,623 | — | — | 69,627 |
| 2007 | 56,796 | — | 14,916 | — | — | 71,794 |
| 2006 | 64,041 | — | 17,360 | — | — | 81,496 |
| 2005 | 66,907 | — | 18,709 | 26,480 | — | 112,200 |
| 2004 | 70,624 | — | 19,315 | 30,074 | 30,808 | 150,929 |
| 2003 | 72,538 | — | 19,298 | 28,707 | 37,617 | 158,270 |
| 2002 | 39,543 | — | 16,444 | 27,712 | 33,680 | 117,556 |
| 2001 | 69,642 | — | 17,765 | 27,261 | 28,521 | 143,380 |
| 2000 | 65,769 | 183,904 | — | 28,287 | 28,473 | 439,439 |
| 1999 | 60,069 | 216,755 | — | — | 32,908 | 455,719 |
| 1998 | 59,950 | 164,901 | — | 44,704 | 24,934 | 414,283 |
▎ 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.