Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
WESTERN ZIRCONIUM
10,000 W 900 S, OGDEN, UT, 84404
Parent company: WEC US HOLDINGS INC
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 | Ammonia | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | Chlorine | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Ammonium sulfate (solution) | Total (lbs) |
| 2024 | 351,477 | 197,038 | 1,614 | — | — | 551,841 |
| 2023 | 341,719 | 192,171 | 2,021 | — | — | 537,549 |
| 2022 | 374,664 | 210,910 | 1,843 | — | — | 589,232 |
| 2021 | 333,225 | 188,560 | 1,438 | — | — | 527,806 |
| 2020 | 338,153 | 189,947 | 1,380 | — | — | 533,835 |
| 2019 | 316,220 | 373,000 | 1,830 | — | — | 697,127 |
| 2018 | 256,140 | 418,000 | 1,850 | — | — | 681,419 |
| 2017 | 295,090 | 414,000 | 1,340 | — | — | 714,508 |
| 2016 | 224,370 | 400,000 | 800 | — | — | 628,598 |
| 2015 | 229,450 | 380,000 | 2,400 | — | — | 616,578 |
| 2014 | 264,680 | 399,000 | 1,900 | — | — | 670,848 |
| 2013 | 234,530 | 430,000 | 12,200 | — | — | 682,260 |
| 2012 | 356,390 | 505,000 | 15,000 | — | — | 883,288 |
| 2011 | 365,990 | 526,000 | 14,110 | — | — | 913,367 |
| 2010 | 408,700 | 434,000 | 14,310 | — | — | 863,497 |
| 2009 | 341,300 | 516,000 | 14,330 | — | — | 878,204 |
| 2008 | 442,400 | 480,000 | 14,310 | — | — | 943,023 |
| 2007 | 355,627 | 450,000 | 14,320 | — | — | 825,808 |
| 2006 | 305,623 | 430,000 | 14,330 | — | — | 756,604 |
| 2005 | 395,643 | 640,000 | 15,330 | — | — | 1,055,681 |
| 2004 | 348,826 | 790,000 | 17,330 | — | — | 1,163,721 |
| 2003 | 215,280 | 1,000,000 | 20,330 | — | — | 1,245,214 |
| 2002 | 443,510 | 1,200,000 | 33,310 | 3,090 | — | 1,699,255 |
| 2001 | 360,050 | 1,100,000 | 33,350 | 2,500 | — | 1,512,702 |
| 2000 | 250,081 | 1,200,000 | 41,310 | 2,210 | — | 1,508,427 |
| 1999 | 360,057 | 1,200,000 | 120,350 | 2,505 | — | 1,710,825 |
| 1998 | 370,250 | 1,200,000 | 180,750 | 2,500 | — | 1,783,000 |
| 1997 | 390,250 | 1,100,000 | 140,250 | 2,700 | — | 1,646,750 |
| 1996 | 390,250 | 1,204,550 | 140,250 | 2,700 | — | 1,753,419 |
| 1995 | 410,250 | 1,204,550 | 130,250 | — | — | 1,756,100 |
| 1994 | 3,600,250 | — | 300,250 | 2,900 | — | 3,914,450 |
| 1993 | 4,100,250 | — | 88,005 | 3,200 | — | 4,194,705 |
| 1992 | 3,200,250 | — | 66,005 | 2,700 | 5 | 3,271,720 |
| 1991 | 3,800,250 | — | 66,250 | 32,250 | 440,005 | 4,376,865 |
| 1990 | 2,700,750 | — | 66,250 | 20,750 | 450,000 | 3,240,260 |
| 1989 | 7,200 | — | 66,250 | 123,350 | 270,000 | 774,150 |
| 1988 | — | — | 66,250 | 1,410,750 | 30,000 | 1,509,250 |
| 1987 | 500 | — | — | — | — | 10,300 |
▎ 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.