Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
SUPERIOR PLATING CO
LACEY PL, SOUTHPORT, CT, 06890
Parent company: NA
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 | Phosphoric acid | Chromium compounds (except for chromite ore mined in the Transvaal Region) | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Sodium hydroxide (solution) | Nitric acid | Total (lbs) |
| 2024 | — | — | — | — | — | 1 |
| 2023 | — | — | — | — | 10 | 11 |
| 2022 | — | — | — | — | 10 | 16 |
| 2021 | — | — | — | — | 10 | 17 |
| 2020 | — | — | — | — | 10 | 16 |
| 2019 | — | — | — | — | 10 | 18 |
| 2018 | — | — | — | — | 10 | 18 |
| 2017 | — | — | — | — | 10 | 16 |
| 2016 | — | — | — | — | 10 | 16 |
| 2015 | — | — | — | — | 10 | 17 |
| 2014 | — | — | — | — | 10 | 19 |
| 2013 | — | 17 | — | — | 10 | 34 |
| 2012 | — | 17 | — | — | 10 | 33 |
| 2011 | — | — | — | — | 10 | 22 |
| 2010 | — | — | — | — | 10 | 22 |
| 2009 | — | 17 | — | — | 10 | 38 |
| 2008 | — | 17 | — | — | 10 | 37 |
| 2007 | — | — | — | — | 10 | 18 |
| 2006 | — | 17 | — | — | 10 | 51 |
| 2005 | — | — | — | — | 10 | 17 |
| 2004 | — | — | — | — | 10 | 26 |
| 2003 | — | — | — | — | 10 | 35 |
| 2002 | — | 18 | — | — | 10 | 52 |
| 2001 | — | 18 | — | — | 10 | 45 |
| 2000 | — | 18 | — | — | 10 | 77 |
| 1999 | — | 21 | — | — | 10 | 41 |
| 1998 | 10 | 51 | — | — | 10 | 83 |
| 1997 | 10 | 64 | — | — | — | 74 |
| 1996 | 10 | 46 | — | — | 10 | 81 |
| 1995 | 10 | 15 | — | — | 10 | 60 |
| 1994 | 10 | 10 | 10 | — | 10 | 55 |
| 1993 | 10 | 10 | 10 | — | 10 | 40 |
| 1992 | 10 | 10 | 10 | — | — | 30 |
| 1991 | 10 | 10 | 10 | — | — | 30 |
| 1990 | 10 | 10 | 10 | — | 10 | 40 |
| 1989 | 500 | 500 | 500 | — | 500 | 2,000 |
| 1988 | 500 | 500 | 500 | 500 | — | 2,000 |
| 1987 | 500 | — | — | 500 | — | 1,000 |
▎ 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.