Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
DIOSYNTH INC
5500 1/2 BRADLEY ST, SIOUX CITY, IA, 51111
Parent company: DIOSYNTH 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 | Methanol | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Total (lbs) | |||
| 2002 | 38,520 | — | 38,520 | |||
| 2001 | 39,040 | — | 39,040 | |||
| 2000 | 46,020 | — | 46,020 | |||
| 1999 | 45,700 | — | 45,700 | |||
| 1998 | 48,200 | — | 48,200 | |||
| 1997 | 44,672 | — | 44,672 | |||
| 1996 | 69,756 | — | 69,756 | |||
| 1995 | 125,145 | 920 | 126,065 | |||
| 1994 | 119,870 | 920 | 120,790 | |||
| 1993 | 37,680 | 1,240 | 38,920 | |||
| 1992 | 57,000 | 4,500 | 61,500 | |||
| 1991 | 60,482 | 4,535 | 65,017 | |||
| 1990 | 54,595 | 4,608 | 59,203 | |||
| 1989 | 48,051 | 7,193 | 55,244 | |||
| 1988 | — | 3,650 | 3,650 | |||
▎ 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.