Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
PENNSY SUPPLY INC SILVER SPRING FACILITY
6470 CARLISLE PIKE, MECHANICSBURG, PA, 17050
Parent company: NA
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 | Polycyclic aromatic compounds | Mercury | Benzo[g,h,i]perylene | Total (lbs) | |
| 2024 | 17 | 1 | — | 0 | 18 | |
| 2023 | 20 | — | — | 0 | 20 | |
| 2022 | 19 | 1 | — | 0 | 20 | |
| 2021 | 16 | 1 | 1 | 0 | 18 | |
| 2020 | 8 | 1 | — | 0 | 9 | |
| 2019 | 11 | 1 | — | 0 | 12 | |
| 2018 | 9 | 1 | — | 0 | 10 | |
| 2017 | — | 1 | — | 0 | 1 | |
| 2016 | 10 | 1 | — | 0 | 10 | |
| 2015 | 10 | 1 | — | 0 | 10 | |
| 2014 | 11 | 0 | — | — | 11 | |
| 2013 | 31 | 0 | — | — | 31 | |
▎ 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.