Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
IBM
9000 S RITA RD, TUCSON, AZ, 85744
Parent company: IBM CORP
Carcinogen
— 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 | Dichloromethane | Freon 113 (CFC-113) | Methyl isobutyl ketone | Chromium compounds (except for chromite ore mined in the Transvaal Region) | Total (lbs) | |
| 1989 | 1,246 | 4,724 | 1,000 | 250 | 7,220 | |
| 1988 | 34,811 | 39,990 | 4,685 | — | 79,486 | |
| 1987 | 34,810 | — | — | — | 34,810 | |
▎ 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.