Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
IMI NORGREN INC
5400 S DELAWARE ST, LITTLETON, CO, 80120
Parent company: IMI PLC
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 | Zinc compounds | Copper compounds | Nickel compounds | Copper | Total (lbs) |
| 2007 | — | 10 | — | — | 10 | 46 |
| 2006 | — | 20 | — | — | 255 | 291 |
| 2005 | — | 10 | — | — | 10 | 22 |
| 2004 | — | 10 | — | — | 10 | 22 |
| 2003 | — | 10 | — | — | 10 | 20 |
| 2002 | — | 15 | — | — | 10 | 25 |
| 2001 | — | — | — | — | 15 | 15 |
| 2000 | — | — | — | — | 15 | 15 |
| 1999 | — | — | — | — | 255 | 255 |
| 1998 | — | 15 | 15 | — | — | 30 |
| 1997 | — | 15 | 15 | — | — | 30 |
| 1996 | — | 15 | 15 | — | — | 30 |
| 1995 | — | 500 | 500 | 500 | — | 2,000 |
| 1994 | — | 1,250 | 255 | 505 | — | 2,275 |
| 1993 | — | 1,574 | 255 | — | — | 2,094 |
| 1992 | — | 1,727 | — | — | 255 | 2,232 |
| 1991 | — | — | — | — | — | 505 |
| 1990 | — | — | — | — | — | 255 |
| 1988 | 11,018 | — | — | — | — | 11,018 |
▎ 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.