Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
PURINA ANIMAL NUTRITION LLC - RIVERGATE
15840 N SIMMONS ROAD, PORTLAND, OR, 97203
Parent company: LAND O LAKES INC
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases 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.
| Year | Copper compounds | Zinc compounds | Manganese compounds | Total |
|---|---|---|---|---|
| 1994 | 7 | 6 | 5 | 18 |
| 1993 | 7 | 7 | 8 | 22 |
| 1992 | 9 | 5 | 5 | 19 |
| 1991 | 3 | 7 | — | 10 |