Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NORTHWEST PIPE CO
8154 IND US TRIAL PARK LN, ATCHISON, KS, 66002
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 | Copper | Chromium | Total (lbs) |
| 2015 | — | — | 27 | — | — | 27 |
| 2014 | — | — | 78 | — | — | 78 |
| 2011 | — | — | 27 | — | — | 27 |
| 2010 | — | — | 23 | 8 | 4 | 39 |
| 2009 | — | — | 15 | 5 | 3 | 25 |
| 2008 | — | — | 32 | 11 | 5 | 53 |
| 2007 | — | — | 27 | 9 | 4 | 44 |
| 2006 | — | — | 23 | 8 | 4 | 38 |
| 2005 | — | — | 16 | 5 | 3 | 27 |
| 2004 | — | — | 20 | 7 | 3 | 33 |
| 2003 | — | — | 353 | 117 | 60 | 589 |
| 1997 | 11,000 | — | — | — | — | 11,000 |
| 1996 | 77,000 | 10,000 | — | — | — | 87,000 |
| 1995 | 55,000 | 7,300 | — | — | — | 62,300 |
| 1994 | 34,000 | 4,500 | — | — | — | 38,500 |
▎ 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.