Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
KOYKER MANUFACTURING CO
200 N CLEVELAND, LENNOX, SD, 57039
Parent company: SIOUX STEEL CO
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 | Xylene (mixed isomers) | Toluene | Total (lbs) | |||
| 2008 | 11,352 | — | 11,352 | |||
| 2007 | 19,405 | — | 19,405 | |||
| 2006 | 24,041 | — | 24,041 | |||
| 2005 | 24,041 | — | 24,041 | |||
| 2004 | 29,878 | — | 29,878 | |||
| 2003 | 50,760 | — | 50,760 | |||
| 2002 | 33,467 | — | 33,467 | |||
| 2001 | 10,909 | — | 10,909 | |||
| 2000 | 14,623 | — | 14,623 | |||
| 1999 | 14,623 | — | 14,623 | |||
| 1998 | 20,425 | 7,871 | 28,296 | |||
| 1997 | 23,807 | 11,088 | 34,895 | |||
| 1995 | 16,130 | — | 16,130 | |||
| 1994 | 20,587 | — | 20,587 | |||
| 1993 | 20,128 | — | 20,128 | |||
| 1992 | 10,702 | — | 10,702 | |||
| 1991 | 11,358 | — | 11,358 | |||
▎ 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.