Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NELSON IRRIGATION CORP
848 AIRPORT RD, WALLA WALLA, WA, 99362
Parent company: NA
Carcinogen
PBT
— EPA classifications across all reporting years
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 | 1,1,1-Trichloroethane | Copper | Lead | Total (lbs) | ||
| 2004 | — | 40 | 5 | 45 | ||
| 2003 | — | 70 | 15 | 85 | ||
| 2002 | — | 80 | 15 | 95 | ||
| 2001 | — | 80 | 20 | 100 | ||
| 2000 | — | 250 | 250 | 500 | ||
| 1999 | — | 250 | 250 | 500 | ||
| 1998 | — | 250 | 250 | 500 | ||
| 1997 | — | 250 | 250 | 500 | ||
| 1996 | — | 250 | 250 | 500 | ||
| 1995 | — | 250 | 250 | 500 | ||
| 1994 | — | 250 | 250 | 500 | ||
| 1993 | — | 250 | 250 | 500 | ||
| 1992 | — | 250 | 250 | 500 | ||
| 1991 | 15,750 | 250 | 250 | 16,250 | ||
| 1990 | 18,620 | 250 | 250 | 19,120 | ||
| 1989 | 14,400 | 250 | 250 | 14,900 | ||
| 1988 | 14,000 | — | — | 14,000 | ||
| 1987 | 16,000 | — | — | 16,000 | ||
▎ 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.