Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
US NATL PARK SERVICE MOUNT RUSHMORE NMEM
13000 HWY 244, KEYSTONE, SD, 57751
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 | Total (lbs) | ||||
| 2007 | 140 | 140 | ||||
| 2006 | 145 | 145 | ||||
| 2005 | 114 | 114 | ||||
▎ 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.