Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
US NATL PARK SERVICE YELLOWSTONE NATIONAL PARK
YELLOWSTONE NATIONAL PARK, YELLOWSTONE NATIONAL PARK, WY, 82190
Parent company: US DEPARTMENT OF THE INTERIOR
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 | Lead | Propylene | Total (lbs) | |||
| 2020 | 204 | — | 204 | |||
| 2015 | 223 | — | 223 | |||
| 2013 | 187 | — | 187 | |||
| 2012 | 236 | — | 236 | |||
| 2010 | 226 | — | 226 | |||
| 2009 | 305 | — | 305 | |||
| 2008 | 639 | — | 639 | |||
| 2007 | 887 | — | 887 | |||
| 2006 | 1,007 | — | 1,007 | |||
| 2004 | 1,033 | — | 1,033 | |||
| 2003 | 1,032 | — | 1,032 | |||
| 1994 | — | 1,161 | 1,161 | |||
▎ 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.