Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
HUMPHREY CHEMICAL CO INC
45 DEVINE ST, NORTH HAVEN, CT, 064732238
Parent company: CAMBREX CORP
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 | Maleic anhydride | Bromine | Total (lbs) | |||
| 1999 | 19 | — | 19 | |||
| 1998 | 104 | — | 104 | |||
| 1997 | 72 | — | 72 | |||
| 1996 | 500 | 10 | 510 | |||
| 1995 | 500 | 10 | 510 | |||
| 1994 | 420 | — | 420 | |||
| 1993 | 483 | — | 483 | |||
| 1992 | 200 | — | 200 | |||
| 1991 | 500 | — | 500 | |||
| 1990 | 1,000 | — | 1,000 | |||
| 1989 | 1,000 | — | 1,000 | |||
| 1988 | 1,000 | — | 1,000 | |||
| 1987 | 1,750 | — | 1,750 | |||
▎ 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.