Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
TOKYO OHKA KOGYO AMERICA INC
4600 NE BROOKWOOD PKWY, HILLSBORO, OR, 97124
Parent company: NA
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 | Methanol | Certain glycol ethers | Total (lbs) | |||
| 2024 | 3,086 | 755 | 3,841 | |||
| 2023 | 3,151 | — | 3,151 | |||
| 2018 | 189 | — | 189 | |||
| 2017 | 129 | — | 129 | |||
| 2016 | 155 | — | 155 | |||
| 2015 | 94 | — | 94 | |||
| 2014 | 207 | — | 207 | |||
| 2013 | 128 | — | 128 | |||
| 2012 | 147 | — | 147 | |||
| 2011 | 151 | — | 151 | |||
| 2010 | 183 | — | 183 | |||
| 2009 | 152 | — | 152 | |||
| 2008 | 305 | — | 305 | |||
| 2007 | 385 | — | 385 | |||
| 2006 | 360 | — | 360 | |||
| 2005 | 488 | — | 488 | |||
| 2004 | 369 | — | 369 | |||
| 2003 | 367 | — | 367 | |||
| 2002 | 487 | — | 487 | |||
| 2001 | 587 | — | 587 | |||
| 2000 | 676 | — | 676 | |||
| 1999 | 428 | — | 428 | |||
| 1998 | 271 | — | 271 | |||
| 1997 | 1,023 | — | 1,023 | |||
▎ 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.