Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
ROYAL BUILDING PRODUCTS
4057 S OAK ST, METAMORA, MI, 48455
Parent company: WESTLAKE CORP
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 | Copper | Manganese | Total (lbs) | |||
| 2024 | 95 | 49 | 144 | |||
| 2023 | 0 | 0 | 0 | |||
| 2022 | 64 | 33 | 97 | |||
| 2021 | 116 | 59 | 175 | |||
▎ 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.