Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
KNIFE RIVER SPOKANE PRESTRESS
922 N CARNAHAN RD, SPOKANE, WA, 99212
Parent company: CRH AMERICAS INC
PBT
— 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 compounds | Lead compounds | Lead And Lead Compounds | Mercury compounds | Total (lbs) | |
| 2022 | — | 0 | — | — | 0 | |
| 2021 | — | — | 0 | — | 0 | |
| 2019 | — | 70 | — | — | 70 | |
| 2018 | 1,992 | 19 | — | — | 2,011 | |
| 2017 | 10,493 | 100 | — | — | 10,593 | |
| 2016 | 9,535 | 90 | — | — | 9,626 | |
| 2015 | 1,694 | 16 | — | — | 1,710 | |
| 2014 | 2,470 | 24 | — | 0 | 2,494 | |
| 2013 | — | 9 | — | — | 9 | |
| 2011 | — | 17 | — | — | 17 | |
| 2010 | — | 12 | — | — | 12 | |
| 2009 | — | 13 | — | — | 13 | |
| 2008 | — | 16 | — | — | 16 | |
| 2007 | — | 28 | — | — | 28 | |
| 2006 | — | 19 | — | — | 19 | |
| 2005 | — | 21 | — | — | 21 | |
▎ 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.