Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
SILTRONIC CORP
7200 NW FRONT AVE., PORTLAND, OR, 97210
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 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | Freon 113 (CFC-113) | Ammonia | Nitric acid | Dichloromethane | Total (lbs) |
| 2024 | 391,032 | — | — | 750 | — | 392,224 |
| 2023 | 388,619 | — | — | 776 | — | 389,863 |
| 2022 | 481,688 | — | — | 863 | — | 483,048 |
| 2021 | 538,538 | — | — | 951 | — | 540,011 |
| 2020 | 430,930 | — | — | 788 | — | 432,180 |
| 2019 | 229,119 | — | — | 727 | — | 230,328 |
| 2018 | 168,569 | — | — | 900 | — | 170,041 |
| 2017 | 157,474 | — | — | 883 | — | 158,927 |
| 2016 | 224,489 | — | — | 904 | — | 225,943 |
| 2015 | 145,866 | — | — | 873 | — | 147,293 |
| 2014 | 158,601 | — | — | 1,018 | — | 160,157 |
| 2013 | 138,382 | — | — | 987 | — | 139,867 |
| 2012 | 350,562 | — | — | 1,176 | — | 352,460 |
| 2011 | 389,980 | — | — | 1,249 | — | 392,101 |
| 2010 | 506,498 | — | — | 1,419 | — | 508,914 |
| 2009 | 443,436 | — | — | 1,188 | — | 445,521 |
| 2008 | 567,528 | — | — | 1,452 | — | 569,960 |
| 2007 | 633,258 | — | — | 1,632 | — | 635,958 |
| 2006 | 690,968 | — | — | 1,662 | — | 693,713 |
| 2005 | 556,281 | — | — | 1,394 | — | 558,638 |
| 2004 | 661,072 | — | — | 1,383 | — | 663,475 |
| 2003 | 751,107 | — | — | 1,260 | — | 753,328 |
| 2002 | 1,074,401 | — | — | 1,467 | — | 1,076,803 |
| 2001 | 918,800 | — | — | 1,255 | — | 924,305 |
| 2000 | 1,334,000 | — | — | 1,580 | — | 1,340,459 |
| 1999 | 1,035,600 | — | — | 1,241 | — | 1,040,547 |
| 1998 | 1,046,490 | — | — | 5,000 | — | 1,054,589 |
| 1997 | 1,287,346 | — | — | 8,458 | — | 1,298,997 |
| 1996 | 959,531 | — | — | 6,296 | — | 968,902 |
| 1995 | 566,044 | — | — | 793 | — | 568,165 |
| 1994 | — | — | 21,900 | 406 | — | 23,735 |
| 1993 | — | — | 19,000 | 339 | — | 20,792 |
| 1992 | — | 13,660 | 44,300 | 301 | — | 59,606 |
| 1991 | — | 41,849 | 23,236 | 182 | 4,042 | 70,567 |
| 1990 | — | 232,000 | 18,900 | 505 | 15,800 | 274,623 |
| 1989 | — | 240,000 | 21,600 | 500 | 10,500 | 281,168 |
| 1988 | — | — | 17,000 | 250 | 8,000 | 34,750 |
| 1987 | — | — | — | — | 14,000 | 26,000 |
▎ 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.