Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NORTHWEST PIPE CO
12351 RANCHO RD, ADELANTO, CA, 92301
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 | Manganese | Dichloromethane | 1,1,1-Trichloroethane | Zinc (fume or dust) | Methyl ethyl ketone | Total (lbs) |
| 2024 | 250 | — | — | — | — | 250 |
| 2023 | 19 | — | — | — | — | 19 |
| 2022 | 22 | — | — | — | — | 22 |
| 2021 | 11 | — | — | — | — | 11 |
| 2020 | 9 | — | — | — | — | 9 |
| 2019 | 15 | — | — | — | — | 15 |
| 2018 | 75 | — | — | — | — | 75 |
| 2017 | 10 | — | — | — | — | 10 |
| 2016 | 6 | — | — | — | — | 6 |
| 2015 | 5 | — | — | — | — | 5 |
| 2014 | 2 | — | — | — | — | 2 |
| 2013 | 5 | — | — | — | — | 5 |
| 2012 | 33 | — | — | — | — | 33 |
| 2011 | 43 | — | — | — | — | 53 |
| 2010 | 140 | — | — | — | — | 140 |
| 2009 | 250 | — | — | — | — | 250 |
| 2008 | 250 | — | — | — | — | 250 |
| 2002 | 87,296 | 15,368 | — | — | — | 102,664 |
| 2001 | 45,569 | 19,779 | — | — | — | 65,348 |
| 2000 | 42,948 | 44,653 | — | — | — | 87,601 |
| 1999 | 23,682 | 41,653 | — | 10,080 | — | 75,415 |
| 1998 | 31,480 | 56,841 | — | 12,557 | — | 100,878 |
| 1997 | 38,930 | — | — | — | — | 38,930 |
| 1996 | 32,990 | — | — | — | 13,622 | 46,612 |
| 1995 | — | — | 22,000 | — | — | 22,000 |
| 1994 | — | — | 57,000 | — | — | 57,000 |
| 1993 | — | — | 15,000 | — | — | 15,000 |
| 1992 | — | — | 81,000 | — | — | 81,000 |
▎ 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.