Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
HEWLETT-PACKARD CO
3000 MINUTEMAN RD, ANDOVER, MA, 018101099
Parent company: HEWLETT-PACKARD CO
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 | Ammonia | Methanol | Total (lbs) | |
| 1992 | 9,704 | — | — | — | 9,704 | |
| 1991 | 19,722 | 5,415 | — | 2,940 | 28,077 | |
| 1990 | 22,204 | 6,770 | — | 2,821 | 31,795 | |
| 1989 | 16,850 | — | — | 2,425 | 19,275 | |
| 1988 | 19,200 | — | 8,700 | — | 27,900 | |
▎ 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.