Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
SIGNAL MOUNTAIN CEMENT CO DBA BUZZI UNICEM USA
1201 SUCK CREEK RD, CHATTANOOGA, TN, 37405
Parent company: BUZZI UNICEM USA INC
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 | Aluminum (fume or dust) | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Manganese compounds | Nickel compounds | Nickel | Total (lbs) |
| 2024 | — | — | 381 | — | — | 435 |
| 2023 | — | — | 445 | — | — | 500 |
| 2022 | — | — | 235 | — | — | 287 |
| 2021 | 4,214 | — | — | — | — | 4,556 |
| 2020 | 5,550 | — | 475 | — | — | 6,148 |
| 2019 | 8,624 | — | — | — | — | 9,352 |
| 2018 | 7,883 | — | 622 | — | — | 8,584 |
| 2017 | 8,334 | — | 539 | — | — | 8,959 |
| 2016 | 7,769 | — | 785 | — | — | 8,598 |
| 2015 | 7,586 | — | 633 | — | — | 8,239 |
| 2014 | 6,471 | — | 410 | — | — | 6,896 |
| 2013 | 5,790 | — | 400 | — | — | 6,204 |
| 2012 | 4,944 | — | 305 | — | — | 5,260 |
| 2011 | 6,564 | — | 509 | 78 | — | 7,378 |
| 2010 | 7,105 | — | 592 | 10 | — | 7,854 |
| 2009 | 9,293 | — | 889 | 23 | — | 10,493 |
| 2008 | 5,760 | — | 942 | 30 | — | 7,019 |
| 2007 | 8,453 | 26,709 | 594 | 802 | — | 37,061 |
| 2006 | 7,590 | 26,182 | 611 | 806 | — | 35,750 |
| 2005 | 12,125 | — | 128 | 25 | 800 | 14,044 |
| 2004 | 1,132 | — | — | — | 782 | 2,198 |
| 2002 | — | — | — | — | — | 4 |
| 2001 | — | — | — | — | — | 0 |
▎ 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.