Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
W R GRACE & CO-CONN
7500 GRACE DR, COLUMBIA, MD, 21044
Parent company: NA
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 | n-Hexane | Methanol | Toluene | 2-Nitropropane | Methyl ethyl ketone | Total (lbs) |
| 2010 | — | — | 255 | — | — | 255 |
| 2007 | — | — | 255 | — | — | 255 |
| 2006 | — | — | 255 | — | — | 255 |
| 2005 | — | — | 13 | — | — | 13 |
| 2004 | — | — | 78 | — | — | 78 |
| 2003 | — | — | 10 | — | — | 10 |
| 2002 | — | 10 | — | — | — | 10 |
| 2000 | 255 | — | 500 | — | — | 755 |
| 1999 | 500 | — | 500 | — | — | 1,000 |
| 1998 | 1,705 | — | — | — | — | 1,705 |
| 1992 | — | 722 | — | 846 | — | 1,568 |
| 1991 | — | 1,152 | — | — | — | 1,152 |
| 1989 | — | — | — | — | 250 | 250 |
▎ 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.