Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
UMICORE OPTICAL MATERIALS USA INC.
2976 S 614 RD, QUAPAW, OK, 74363
Parent company: UMICORE USA INC
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 | Chlorine | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Methanol | Sodium hydroxide (solution) | Total (lbs) |
| 2023 | — | 2 | — | — | — | 2 |
| 2015 | — | 3 | — | — | — | 3 |
| 2014 | — | 4 | — | — | — | 4 |
| 2013 | — | 4 | — | — | — | 4 |
| 2012 | — | 5 | — | — | — | 5 |
| 2011 | 4 | 6 | — | — | — | 10 |
| 2010 | 13 | 5 | — | — | — | 18 |
| 2009 | 27 | 2 | — | — | — | 29 |
| 2008 | 29 | 3 | — | — | — | 32 |
| 2007 | 20 | 3 | — | — | — | 23 |
| 2006 | 5,450 | 690 | — | — | — | 6,140 |
| 2005 | 5,450 | 690 | — | — | — | 6,140 |
| 2004 | 9,818 | 2,265 | — | — | — | 12,083 |
| 2003 | 20,505 | 2,300 | — | — | — | 22,805 |
| 2002 | 33,805 | 6,900 | — | — | — | 40,705 |
| 2001 | 23,000 | 9,800 | — | 1,200 | — | 34,000 |
| 2000 | 22,100 | 13,200 | — | 1,900 | — | 37,200 |
| 1999 | 9,300 | 13,300 | — | 1,600 | — | 24,200 |
| 1998 | 9,900 | 13,600 | — | 5,800 | — | 29,300 |
| 1997 | 11,800 | 10,500 | — | — | — | 22,300 |
| 1996 | 15,300 | 10,600 | — | — | — | 25,900 |
| 1995 | 18,600 | 8,800 | — | — | — | 27,400 |
| 1994 | 15,700 | 8,000 | 12,000 | — | — | 35,700 |
| 1993 | 12,300 | 7,800 | 8,800 | — | — | 28,900 |
| 1992 | 18,900 | 8,000 | 12,100 | — | — | 39,000 |
| 1991 | 18,900 | 8,000 | 12,100 | — | — | 39,000 |
| 1990 | 19,200 | 8,000 | 12,000 | — | — | 39,200 |
| 1989 | 19,200 | 5,400 | 11,800 | — | — | 36,400 |
| 1988 | 19,200 | — | — | — | 500 | 19,700 |
| 1987 | 75,450 | — | — | — | — | 75,450 |
▎ 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.