Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NATIONAL BY-PRODUCTS INC
601 SE 18TH ST, DES MOINES, IA, 50317
Parent company: NA
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 | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Total (lbs) | |||
| 2004 | 1,250 | — | 1,250 | |||
| 2003 | 1,360 | — | 1,360 | |||
| 2002 | 1,386 | — | 1,386 | |||
| 2001 | 1,620 | — | 1,620 | |||
| 2000 | 1,535 | — | 1,535 | |||
| 1999 | 1,568 | — | 1,568 | |||
| 1998 | 1,459 | — | 1,459 | |||
| 1997 | 1,598 | — | 1,598 | |||
| 1996 | 500 | — | 500 | |||
| 1995 | 500 | 5 | 505 | |||
| 1994 | 500 | 5 | 505 | |||
| 1993 | 500 | 5 | 505 | |||
| 1992 | 500 | 5 | 505 | |||
| 1991 | 500 | 5 | 505 | |||
| 1990 | 500 | 5 | 505 | |||
▎ 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.