Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
HENDERSON PRODUCTS INC
1085 S 3RD ST, MANCHESTER, IA, 52057
Parent company: DOUGLAS DYNAMICS HOLDINGS INC
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 | Xylene (mixed isomers) | Toluene | Ethylbenzene | Manganese | Chromium | Total (lbs) |
| 2024 | — | — | — | 40 | 28 | 77 |
| 2023 | — | — | — | 75 | 107 | 210 |
| 2022 | — | — | — | 74 | 99 | 198 |
| 2021 | — | — | — | 77 | 96 | 195 |
| 2020 | — | — | — | 65 | 57 | 145 |
| 2019 | — | — | — | 66 | 59 | 148 |
| 2018 | — | — | — | 66 | 53 | 142 |
| 2017 | — | — | — | 56 | 53 | 132 |
| 2016 | — | — | — | 61 | 53 | 137 |
| 2015 | — | — | — | 72 | 50 | 145 |
| 2014 | — | — | — | 60 | 63 | 152 |
| 2013 | — | — | — | 53 | 27 | 93 |
| 1996 | 20,217 | — | — | — | — | 20,217 |
| 1995 | 42,711 | 14,306 | 11,010 | — | — | 68,027 |
| 1994 | 31,179 | — | — | — | — | 31,179 |
| 1993 | 19,410 | — | — | — | — | 19,410 |
| 1992 | 15,605 | 15,172 | — | — | — | 30,777 |
| 1991 | 20,956 | 16,398 | — | — | — | 37,354 |
| 1990 | 20,549 | 22,721 | — | — | — | 43,270 |
| 1989 | 25,881 | 33,404 | — | — | — | 59,285 |
| 1987 | 25,745 | — | — | — | — | 25,745 |
▎ 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.