Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
POTOMAC HOLLOW RD, BARTON, MD, 21521
Parent company: ARCH COAL INC.
Reported on-site TRI releases in pounds, grouped by reporting year.
The 10 chemicals with the highest cumulative on-site releases across all available years.
Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.
| Year | Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | Manganese compounds | Vanadium compounds | Zinc compounds | Chromium compounds (except for chromite ore mined in the Transvaal Region) | Total |
|---|---|---|---|---|---|---|
| 2013 | 15,484 | — | — | — | — | 15,950 |
| 2012 | 113,930 | 31,057 | 13,530 | 15,406 | 12,504 | 235,900 |
| 2011 | 153,372 | 37,671 | 34,633 | 22,160 | 19,346 | 322,010 |
| 2010 | 140,570 | 42,777 | — | 17,747 | 13,332 | 299,892 |
| 2009 | 94,859 | 35,467 | 23,830 | 32,875 | 13,428 | 245,142 |
| 2008 | 116,236 | 26,208 | 26,929 | 11,852 | 18,907 | 235,604 |
| 2007 | 183,285 | 41,326 | 42,462 | 18,689 | 29,813 | 371,507 |
| 2006 | 40,062 | 9,033 | 9,281 | — | — | 60,031 |