Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
ZOLTEK CORP
11 MISSOURI RESEARCH PARK, SAINT CHARLES, MO, 63304
Parent company: ZOLTEK COS 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 | Ammonia | Cyanide compounds | Hydrogen cyanide | Total (lbs) | ||
| 2014 | 9,947 | — | 19 | 9,966 | ||
| 2013 | 5,627 | — | 250 | 5,877 | ||
| 2012 | 5,058 | — | 306 | 5,364 | ||
| 2011 | 4,843 | — | 302 | 5,145 | ||
| 2010 | 4,547 | — | 500 | 5,047 | ||
| 2009 | 4,507 | — | 500 | 5,007 | ||
| 2008 | 7,431 | — | 1,291 | 8,722 | ||
| 2007 | 10,008 | — | 2,309 | 12,317 | ||
| 2006 | 3,947 | — | 1,057 | 5,004 | ||
| 2005 | 2,375 | 625 | — | 3,000 | ||
| 2004 | 2,219 | 716 | — | 2,935 | ||
| 2003 | 2,939 | 446 | — | 3,385 | ||
| 2002 | 2,365 | 848 | — | 3,213 | ||
| 2001 | 3,479 | 468 | — | 3,947 | ||
| 2000 | 4,923 | 940 | — | 5,863 | ||
| 1999 | 8,021 | 1,610 | — | 9,631 | ||
| 1998 | 13,480 | 2,602 | — | 16,082 | ||
▎ 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.