Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
HEWLETT-PACKARD CO
175 WYMAN ST, WALTHAM, MA, 022549030
Parent company: HEWLETT-PACKARD CO
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases 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.
| Year | 1,1,1-Trichloroethane | Ammonia | Toluene | Total |
|---|---|---|---|---|
| 1990 | 27,868 | — | — | 27,868 |
| 1989 | 13,868 | 13,651 | 8,116 | 35,635 |
| 1988 | 26,090 | 6,250 | — | 32,340 |