Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
CERTAINTEED CORP
10131 GOVERNOR LN BLVD, WILLIAMSPORT, MD, 21795
Parent company: COMPAGNIE DE SAINT GOBAIN
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 | Mixture | 1,1,1-Trichloroethane | Styrene | Antimony compounds | Chromium compounds (except for chromite ore mined in the Transvaal Region) | Total (lbs) |
| 2023 | — | — | — | — | — | 260 |
| 2011 | — | — | — | 250 | 250 | 500 |
| 2010 | — | — | — | 250 | 250 | 500 |
| 2009 | — | — | — | 250 | 250 | 500 |
| 2008 | — | — | — | 250 | 250 | 500 |
| 2004 | — | — | 2,505 | — | 10 | 3,266 |
| 1995 | — | — | — | 167 | 120 | 377 |
| 1992 | 32,700 | — | — | — | — | 32,700 |
| 1988 | — | 12,059 | — | — | — | 12,059 |
▎ 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.