Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
BWXT NUCLEAR OPERATIONS GROUP
1400 OLD HWY 69 S, MOUNT VERNON, IN, 47620
Parent company: BWX TECHNOLOGIES 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 | Chromium | Manganese | Nickel | Total (lbs) | ||
| 2024 | 18 | — | 46 | 64 | ||
| 2023 | 19 | — | 48 | 67 | ||
| 2022 | 18 | — | 45 | 63 | ||
| 2021 | 14 | — | 34 | 48 | ||
| 2020 | 13 | — | 34 | 47 | ||
| 2019 | 17 | — | 44 | 61 | ||
| 2018 | 17 | — | 32 | 49 | ||
| 2017 | 13 | — | 32 | 45 | ||
| 2016 | 17 | — | 42 | 59 | ||
| 2005 | — | — | 17 | 17 | ||
| 2004 | 21 | 37 | 44 | 102 | ||
| 1996 | 251 | 251 | 251 | 753 | ||
| 1995 | 10 | 351 | 5 | 366 | ||
| 1994 | 255 | 250 | 255 | 760 | ||
| 1993 | 500 | — | 10 | 510 | ||
| 1992 | 500 | — | 10 | 510 | ||
| 1991 | 255 | 255 | 10 | 520 | ||
▎ 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.