Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
COLT REFINING INC
12A STAR DR, MERRIMACK, NH, 03054
Parent company: NA
Carcinogen
PBT
— 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 | Silver compounds | Lead | Copper | Silver And Silver Compounds | Mercury | Total (lbs) |
| 2024 | 5 | 7 | — | — | — | 12 |
| 2023 | — | 5 | — | 6 | — | 11 |
| 2022 | — | 16 | 2 | 5 | — | 23 |
| 2021 | — | 9 | 4 | 6 | — | 19 |
| 2020 | 4 | 2 | — | — | — | 6 |
| 2019 | — | 2 | 1 | 4 | — | 7 |
| 2018 | — | 3 | 1 | 9 | — | 13 |
| 2017 | 73 | 4 | 1 | — | 4 | 82 |
| 2016 | 10 | 5 | 2 | — | 2 | 19 |
| 2015 | 123 | 2 | 4 | — | — | 129 |
| 2014 | 343 | 3 | 3 | — | 2 | 352 |
| 2013 | 1 | 0 | 1 | — | — | 2 |
| 2012 | — | 0 | 3 | — | 0 | 4 |
| 2011 | — | 0 | 2 | — | 0 | 2 |
| 2010 | — | 0 | 2 | — | 0 | 2 |
| 2009 | — | 0 | 3 | — | 0 | 3 |
| 2008 | — | 0 | 1 | — | — | 1 |
| 2007 | — | 0 | 2 | — | — | 2 |
| 2006 | — | 3 | — | — | — | 3 |
▎ 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.