Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
NORTHWEST PIPE CO
6307 TOLEDO, HOUSTON, TX, 77008
Parent company: NORTHWEST PIPE CO
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases 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.
| Year | 1,1,1-Trichloroethane | Manganese | Total |
|---|---|---|---|
| 2013 | — | 5 | 5 |
| 2012 | — | 5 | 5 |
| 2011 | — | 5 | 5 |
| 2010 | — | 5 | 5 |
| 2009 | — | 5 | 5 |
| 2008 | — | 5 | 5 |
| 2007 | — | 3 | 3 |
| 2006 | — | 12 | 12 |
| 2005 | — | 250 | 250 |
| 2000 | 4,234 | — | 4,234 |
| 1999 | — | 546 | 546 |