Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
ZINPRO CORP
21810 LOGISTICS PARK DR, SHELL ROCK, IA, 50670
Parent company: ZINPRO CORP
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 | Zinc compounds | Manganese compounds | Copper compounds | Manganese And Manganese Compounds | Copper And Copper Compounds | Total (lbs) |
| 2024 | 10,115 | 7,916 | 5,285 | — | — | 24,664 |
| 2023 | 8,698 | 7,019 | 3,477 | — | — | 20,292 |
| 2022 | 9,886 | 8,239 | 3,564 | — | — | 22,878 |
| 2021 | 12,050 | — | — | 8,443 | 3,362 | 25,328 |
| 2020 | 7,632 | 5,052 | 1,460 | — | — | 16,469 |
| 2019 | 6,475 | 10,384 | 1,601 | — | — | 18,664 |
| 2018 | 7,200 | — | — | 6,578 | 1,409 | 15,406 |
| 2017 | 5,844 | 5,088 | 630 | — | — | 11,679 |
| 2016 | 2,786 | 3,189 | 279 | — | — | 6,305 |
| 2015 | 250 | 250 | 5 | — | — | 515 |
| 2014 | 250 | 250 | — | — | — | 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.