Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
SEWARD PLANT
11729 HIGHWAY 29, LIBERTY HILL, TX, 78642
Parent company: OLDCASTLE MATERIALS INC
Carcinogen
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) | Polycyclic aromatic compounds | Lead | Benzo[g,h,i]perylene | Total (lbs) | |
| 2024 | — | 1 | — | 0 | 1 | |
| 2023 | — | 1 | — | 0 | 1 | |
| 2022 | — | 1 | — | 0 | 1 | |
| 2021 | — | 1 | — | 0 | 1 | |
| 2020 | 395 | 1 | — | 0 | 396 | |
| 2019 | 312 | 1 | — | 0 | 313 | |
| 2018 | 807 | 1 | — | 0 | 808 | |
| 2017 | 610 | 1 | — | 0 | 611 | |
| 2016 | 629 | 1 | — | 0 | 630 | |
| 2015 | — | 1 | 0 | 0 | 1 | |
▎ 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.