Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
4656 ADDISON RD, CAPITOL HEIGHTS, MD, 20743
Parent company: NA
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
The 10 chemicals with the highest cumulative on-site releases in pounds (lbs) across all available years.
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 | Nitric acid | Cyanide compounds | Nickel compounds | Silver compounds | Total (lbs) | |
| 2006 | 564 | — | — | — | 564 | |
| 2005 | 867 | — | — | — | 867 | |
| 2004 | 915 | — | — | — | 915 | |
| 2003 | 680 | — | — | — | 680 | |
| 2002 | 473 | — | — | — | 473 | |
| 2001 | 500 | — | — | — | 500 | |
| 2000 | 1,500 | 2,250 | — | 500 | 4,250 | |
| 1999 | 500 | — | — | — | 500 | |
| 1998 | 500 | — | — | — | 500 | |
| 1996 | — | — | 250 | — | 250 | |
| 1995 | — | — | 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.