Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
PURINA ANIMAL NUTRITION LLC - SIOUX CITY IA
4600 STONE AVE, SIOUX CITY, IA, 51106
Parent company: LAND O LAKES 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 | Zinc compounds | Manganese compounds | Copper compounds | Total (lbs) | ||
| 1994 | 500 | 255 | 255 | 1,010 | ||
| 1993 | 500 | 255 | 255 | 1,010 | ||
| 1992 | 500 | 255 | 255 | 1,010 | ||
| 1991 | 1,000 | 510 | 510 | 2,020 | ||
| 1990 | 500 | 500 | 255 | 1,255 | ||
▎ 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.