Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
KNIFE RIVER NORTH CENTRAL BISMARCK ROCK ISLAND
3305 ROCK ISLAND PL, BISMARCK, ND, 58504
Parent company: KNIFE RIVER CORP
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 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | Lead And Lead Compounds | Total (lbs) | |||
| 2024 | 190 | 0 | 190 | |||
| 2023 | 190 | 0 | 190 | |||
| 2022 | 86 | — | 86 | |||
| 2021 | 120 | — | 120 | |||
| 2020 | 79 | — | 79 | |||
| 2019 | 85 | — | 85 | |||
| 2017 | 53 | — | 53 | |||
| 2016 | 226 | — | 226 | |||
| 2015 | 341 | — | 341 | |||
| 2014 | 514 | — | 514 | |||
| 2013 | 813 | — | 813 | |||
▎ 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.