Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
PARK METALLURGICAL CORP
8074 MILITARY AVE, DETROIT, MI, 48204
Parent company: DUBOIS CHEMICALS INC.
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 | Sodium nitrite | 1,1,1-Trichloroethane | Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | Cyanide compounds | Total (lbs) | |
| 2016 | 51 | — | 10 | — | 61 | |
| 2015 | 473 | — | 38 | — | 511 | |
| 2014 | 473 | — | 50 | — | 523 | |
| 2013 | 493 | — | 49 | — | 542 | |
| 2012 | 701 | — | 49 | — | 750 | |
| 2011 | 552 | — | 47 | — | 599 | |
| 2010 | 444 | — | 42 | — | 486 | |
| 2009 | 352 | — | — | — | 352 | |
| 2008 | 451 | — | 42 | — | 493 | |
| 2007 | 569 | — | — | — | 569 | |
| 2006 | 486 | — | — | — | 486 | |
| 2005 | 488 | — | 23 | — | 511 | |
| 2004 | 677 | — | 24 | — | 701 | |
| 2003 | 455 | — | 20 | — | 475 | |
| 2002 | 421 | — | 19 | — | 440 | |
| 2001 | 355 | — | 20 | — | 375 | |
| 2000 | 566 | — | 30 | — | 596 | |
| 1999 | 566 | — | 43 | — | 609 | |
| 1998 | — | — | 29 | 1 | 30 | |
| 1997 | 444 | — | 49 | 1 | 494 | |
| 1996 | 366 | — | 54 | 1 | 421 | |
| 1995 | 384 | — | 51 | 2 | 437 | |
| 1994 | — | — | 33 | 2 | 35 | |
| 1993 | — | — | 255 | 10 | 265 | |
| 1992 | — | — | 255 | 10 | 265 | |
| 1991 | — | 1,500 | 250 | 5 | 1,755 | |
| 1990 | — | 1,500 | — | — | 1,500 | |
| 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.