Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
ISAACSON STRUCTURAL STEEL INC
40 JERICHO RD, BERLIN, NH, 03570
Parent company: NA
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 | Xylene (mixed isomers) | Manganese | Methyl ethyl ketone | Chromium | Nickel | Total (lbs) |
| 1993 | 250 | 250 | 250 | 250 | 250 | 1,255 |
| 1992 | 250 | 750 | 250 | 750 | 750 | 3,250 |
| 1991 | 4,300 | 800 | 750 | 5 | 5 | 6,212 |
▎ 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.