Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NORTON CO
31 NORTON DR, HILLSBORO, NH, 03244
Parent company: NORTON 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 | 1,1,1-Trichloroethane | Aluminum oxide (fibrous forms) | Total (lbs) | |||
| 1992 | 3,970 | — | 3,970 | |||
| 1991 | 5,950 | — | 5,950 | |||
| 1989 | 9,200 | 12,000 | 21,200 | |||
▎ 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.