Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
US NAVY PORTSMOUTH NAVAL SHIPYARD
SEAVEY ISLAND, KITTERY, ME, 03904
Parent company: US DEPARTMENT OF DEFENSE
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 | n-Butyl alcohol | Xylene (mixed isomers) | 2-Ethoxyethanol | Dichloromethane | Copper compounds | Total (lbs) |
| 2024 | — | — | — | — | — | 32 |
| 2023 | 18,289 | 10,626 | — | — | — | 28,949 |
| 2022 | — | 6,687 | — | — | — | 6,689 |
| 2021 | — | — | — | — | — | 2 |
| 2020 | 9,739 | 9,664 | — | — | — | 19,406 |
| 2019 | — | — | — | — | — | 9 |
| 2018 | 8,218 | — | — | — | — | 8,263 |
| 2017 | — | — | — | — | — | 8 |
| 2016 | — | — | — | — | — | 220 |
| 2015 | — | — | — | — | — | 8 |
| 2014 | — | — | — | — | — | 8 |
| 2013 | 8,385 | — | — | — | — | 8,393 |
| 2012 | — | — | — | — | — | 10 |
| 2011 | — | — | — | — | — | 38 |
| 2010 | — | — | — | — | — | 40 |
| 2009 | — | — | — | — | — | 131 |
| 2008 | — | — | — | — | — | 9 |
| 2007 | 6,011 | — | — | — | — | 6,021 |
| 2006 | 6,394 | — | — | — | — | 6,404 |
| 2005 | 10,352 | — | — | — | — | 10,374 |
| 2004 | 11,313 | — | — | — | — | 11,326 |
| 2003 | 12,542 | — | — | — | — | 12,776 |
| 2002 | — | — | — | — | — | 2 |
| 2001 | — | — | — | — | — | 6 |
| 2000 | — | — | — | — | — | 7 |
| 1996 | 15,362 | — | — | — | — | 15,362 |
| 1995 | 17,955 | 8,254 | — | — | 856 | 27,315 |
| 1994 | 21,849 | — | — | — | 300 | 22,149 |
| 1993 | 68,265 | 47,235 | 29,190 | 14,634 | 4,490 | 172,975 |
| 1992 | 62,150 | — | — | — | 5,684 | 67,834 |
▎ 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.