Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
PERMA-PIPE INC.
1310 QUARLES DR, LEBANON, TN, 37087
Parent company: PERMA PIPE INTERNATIONAL HOLDINGS INC
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 | Styrene | 1,1-Dichloro-1-fluoroethane (HCFC-141b) | Xylene (mixed isomers) | Dichloromethane | Diisocyanates | Total (lbs) |
| 2024 | — | — | — | — | 7 | 7 |
| 2023 | — | — | — | — | 20,600 | 20,600 |
| 2022 | — | — | — | — | 11 | 11 |
| 2021 | — | — | — | — | 10 | 10 |
| 2020 | — | — | — | — | 6 | 6 |
| 2019 | — | — | — | — | 9 | 9 |
| 2018 | — | — | — | — | 7 | 7 |
| 2017 | — | — | — | — | 8 | 8 |
| 2016 | — | — | — | — | 9 | 9 |
| 2015 | — | — | — | — | 13 | 13 |
| 2014 | — | — | — | — | 9 | 9 |
| 2013 | — | — | — | — | 8 | 8 |
| 2012 | — | — | — | — | 9 | 9 |
| 2011 | — | — | — | — | 13 | 13 |
| 2010 | — | — | — | — | 20 | 20 |
| 2009 | — | — | — | — | 20 | 20 |
| 2008 | — | — | — | — | 24 | 24 |
| 2006 | 34,773 | 8,501 | — | — | — | 43,283 |
| 2005 | 33,283 | 9,289 | — | — | — | 42,581 |
| 2004 | 27,860 | 8,370 | — | — | — | 36,494 |
| 2003 | 16,050 | 7,310 | — | — | — | 23,369 |
| 2002 | 25,805 | 6,582 | 5 | — | — | 32,401 |
| 2001 | 6,888 | 6,056 | 254 | — | — | 13,208 |
| 2000 | 7,586 | 7,246 | — | — | — | 14,842 |
| 1999 | 3,999 | 8,554 | 872 | 1,306 | — | 14,987 |
| 1998 | 4,856 | 7,240 | 1,271 | 2,280 | — | 15,649 |
| 1997 | 3,897 | 9,428 | 1,588 | 2,400 | — | 17,315 |
| 1996 | 4,417 | 8,039 | 25,920 | 4,800 | — | 43,178 |
| 1995 | 4,418 | — | 250 | 750 | — | 5,437 |
| 1994 | 11,623 | — | 31,800 | 7,800 | — | 51,251 |
| 1993 | 4,300 | — | 14,000 | 15,000 | — | 54,200 |
▎ 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.