Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NAPA PIPE CORP
1025 KAISER RD, NAPA, CA, 94558
Parent company: OREGON STEEL MILLS 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 | Manganese compounds | Aluminum oxide (fibrous forms) | Antimony compounds | Total (lbs) | ||
| 2004 | 0 | — | — | 0 | ||
| 2003 | 1 | — | — | 1 | ||
| 2002 | 5 | — | — | 5 | ||
| 2001 | 5 | — | — | 5 | ||
| 2000 | 5 | — | — | 5 | ||
| 1999 | 5 | — | — | 5 | ||
| 1998 | 5 | — | — | 5 | ||
| 1997 | 5 | — | — | 5 | ||
| 1996 | 5 | — | — | 5 | ||
| 1995 | 5 | — | — | 5 | ||
| 1991 | 9 | — | — | 9 | ||
| 1990 | 70 | — | — | 70 | ||
| 1989 | 2 | 3 | — | 5 | ||
| 1988 | — | — | 2 | 2 | ||
▎ 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.