Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NORTHWEST PIPE CO
12005 N BURGARD RD, PORTLAND, OR, 97203
Parent company: NORTHWEST PIPE CO
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 | Xylene (mixed isomers) | Toluene | m-Xylene | 1,1,1-Trichloroethane | Dichloromethane | Total (lbs) |
| 2019 | — | — | — | — | — | 4 |
| 2018 | — | — | — | — | — | 2 |
| 2016 | — | — | — | — | — | 11 |
| 2015 | — | — | — | — | — | 2 |
| 2014 | — | — | — | — | — | 4 |
| 2013 | — | — | — | — | — | 172 |
| 2012 | — | — | — | — | — | 90 |
| 2011 | — | — | — | — | — | 5 |
| 2010 | — | — | — | — | — | 11 |
| 2009 | — | — | — | — | — | 218 |
| 2000 | — | — | 2,155 | — | — | 2,155 |
| 1999 | — | 17,558 | 6,071 | — | — | 23,629 |
| 1998 | — | 15,862 | 6,071 | — | — | 21,933 |
| 1997 | — | 15,862 | 53,237 | — | — | 69,099 |
| 1996 | 43,000 | 23,000 | — | — | — | 66,000 |
| 1995 | 23,200 | 17,800 | — | — | 12,000 | 53,000 |
| 1994 | 43,100 | 17,300 | — | — | 14,600 | 87,500 |
| 1993 | 49,800 | 15,200 | — | — | — | 65,000 |
| 1992 | 36,000 | — | — | 22,500 | — | 58,500 |
| 1991 | 22,000 | — | — | 23,000 | — | 45,000 |
| 1990 | 21,691 | — | — | 15,575 | — | 38,402 |
| 1989 | 13,804 | — | — | — | — | 13,804 |
▎ 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.