Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
SIMPSON STRONG-TIE CO INC.
2505 ENTERPRISE CIR, WEST CHICAGO, IL, 60185
Parent company: SIMPSON STRONG TIE CO 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 | Phenol | Styrene | 4,4'-Isopropylidenediphenol | Total (lbs) | ||
| 2023 | 1,953 | — | — | 1,953 | ||
| 2022 | 2,143 | — | — | 2,143 | ||
| 2021 | 2,060 | — | — | 2,060 | ||
| 2020 | 1,552 | 1,594 | — | 3,146 | ||
| 2019 | 197 | — | 178 | 375 | ||
| 2018 | — | 1,596 | — | 1,596 | ||
| 2017 | — | 1,554 | — | 1,554 | ||
▎ 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.