Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
UNION SPECIALTIES INC
3 MALCOLM HOYT DR, NEWBURYPORT, MA, 01950
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 | Triethylamine | Certain glycol ethers | N-Methyl-2-pyrrolidone | Hydrazine | Diisocyanates | Total (lbs) |
| 2024 | 92 | 53 | — | — | 5 | 150 |
| 2023 | 65 | 50 | — | — | 5 | 120 |
| 2022 | 122 | 79 | 63 | 81 | 5 | 350 |
| 2021 | 104 | 67 | 84 | — | 5 | 260 |
| 2020 | 469 | 85 | 169 | 7 | 5 | 735 |
| 2019 | 283 | 106 | 110 | — | 5 | 504 |
| 2018 | 274 | 131 | 12 | — | 3 | 420 |
| 2017 | 440 | 173 | 29 | 6 | 4 | 652 |
| 2016 | 88 | 18 | 8 | 7 | 7 | 128 |
| 2015 | 88 | 18 | 9 | 7 | 7 | 129 |
| 2014 | 90 | 18 | 11 | 2 | 5 | 126 |
| 2013 | 74 | 17 | 8 | — | 5 | 104 |
| 2012 | 62 | 5 | 8 | — | 5 | 80 |
| 2011 | 5 | 5 | 5 | — | 5 | 20 |
| 2010 | 5 | 5 | 5 | — | 5 | 20 |
| 2009 | 5 | 5 | 5 | — | 5 | 20 |
| 2008 | 10 | — | — | 10 | — | 20 |
▎ 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.