Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
HITACHI COMPUTER PRODUCTS (AME RICA) INC.
1800 E IMHOFF RD, NORMAN, OK, 73071
Parent company: NA
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 | Freon 113 (CFC-113) | 1,1,1-Trichloroethane | Lead compounds | Total (lbs) | ||
| 2010 | — | — | 1 | 1 | ||
| 2009 | — | — | 2 | 2 | ||
| 2008 | — | — | 2 | 2 | ||
| 2007 | — | — | 2 | 2 | ||
| 2006 | — | — | 2 | 2 | ||
| 2005 | — | — | 2 | 2 | ||
| 2004 | — | — | 2 | 2 | ||
| 2003 | — | — | 2 | 2 | ||
| 2002 | — | — | 2 | 2 | ||
| 2001 | — | — | 2 | 2 | ||
| 1994 | 2,268 | 20,961 | — | 23,229 | ||
| 1993 | 21,540 | 36,600 | — | 58,140 | ||
| 1992 | 22,864 | 26,453 | — | 49,317 | ||
| 1991 | 36,783 | 12,096 | — | 48,879 | ||
| 1990 | 39,398 | 10,418 | — | 49,816 | ||
| 1989 | 42,724 | 9,945 | — | 52,669 | ||
▎ 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.