Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
SOUTHERN HEAT EXCHANGER CORP
6100 OLD MONTGOMERY HWY, TUSCALOOSA, AL, 35405
Parent company: NDA ENGINEERING
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 | Manganese | Nickel | Chromium | Copper | Total (lbs) | |
| 2021 | 508 | 218 | 301 | 50 | 1,076 | |
| 2020 | 794 | 252 | 252 | 7 | 1,304 | |
| 2019 | 834 | 255 | 5 | 7 | 1,101 | |
| 2018 | 515 | 2 | 2 | 2 | 520 | |
| 2017 | 389 | 0 | 0 | 2 | 392 | |
| 2016 | 51 | 0 | 0 | 0 | 51 | |
| 2015 | 51 | 0 | 0 | 0 | 51 | |
| 2014 | 80 | 0 | 0 | 0 | 80 | |
| 2013 | 173 | 2 | 5 | 2 | 182 | |
| 2012 | 209 | 3 | 3 | 3 | 218 | |
| 2011 | 164 | 1 | 1 | 1 | 166 | |
| 2010 | 157 | 0 | 0 | 0 | 159 | |
| 2009 | 231 | 1 | 1 | 1 | 233 | |
| 2008 | 392 | 1 | 1 | 1 | 396 | |
| 2007 | 269 | 1 | 1 | 1 | 271 | |
| 2006 | 292 | 1 | 1 | 1 | 295 | |
| 2005 | 240 | 1 | 1 | 1 | 242 | |
| 2004 | 196 | 1 | 1 | 1 | 198 | |
| 2003 | 139 | 0 | 0 | 0 | 140 | |
| 2002 | 138 | 0 | 0 | 0 | 139 | |
| 2001 | 102 | 1 | 1 | 1 | 105 | |
| 2000 | 120 | 1 | 1 | 1 | 123 | |
▎ 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.