Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
US DOE BIG HILL SPR SITE
24784 BIG HILL RD, WINNIE, TX, 77665
Parent company: US DEPARTMENT OF ENERGY
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 | n-Hexane | Benzene | Ethylbenzene | Total (lbs) | ||
| 2023 | 1,273 | 105 | 16 | 1,394 | ||
| 2022 | 504 | 42 | 6 | 552 | ||
| 2021 | 362 | 30 | 5 | 397 | ||
| 2020 | 788 | 65 | 10 | 863 | ||
| 2019 | 80 | 7 | — | 87 | ||
| 2018 | 449 | 37 | — | 486 | ||
| 2017 | 88 | 7 | — | 95 | ||
| 2014 | 183 | 15 | — | 198 | ||
| 2011 | 250 | 21 | — | 271 | ||
| 2005 | 4,912 | 211 | — | 5,123 | ||
▎ 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.