Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NORTHWEST PIPE CO
10100 W LINNE RD, TRACY, CA, 95377
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 | 1,1,1-Trichloroethane | Xylene (mixed isomers) | Manganese | Nickel | Total (lbs) | |
| 2019 | — | — | 15 | — | 15 | |
| 2018 | — | — | 18 | — | 18 | |
| 2017 | — | — | 299 | — | 299 | |
| 2016 | — | — | 206 | — | 206 | |
| 2015 | — | — | 229 | — | 229 | |
| 2014 | — | — | 249 | — | 249 | |
| 2013 | — | — | 309 | — | 309 | |
| 2012 | — | — | 377 | — | 377 | |
| 2011 | — | — | 351 | — | 351 | |
| 2010 | — | — | 430 | — | 430 | |
| 2009 | — | — | 291 | — | 291 | |
| 2008 | — | — | 239 | — | 239 | |
| 2007 | — | — | 324 | — | 324 | |
| 2006 | — | — | 243 | — | 243 | |
| 2005 | — | — | 145 | 64 | 209 | |
| 2003 | — | — | 589 | 461 | 1,050 | |
| 2001 | — | — | 11 | 5 | 16 | |
| 1995 | 24,100 | 12,000 | — | — | 36,100 | |
| 1994 | 35,200 | — | — | — | 35,200 | |
| 1993 | 19,000 | — | — | — | 19,000 | |
| 1992 | 20,300 | — | — | — | 20,300 | |
▎ 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.