Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
LARK HEAT TREATING INC
6640 MAYARD DR, HOUSTON, TX, 77041
Parent company: NA
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 | Ammonia | Total (lbs) | ||||
| 2022 | 1,318 | 1,318 | ||||
| 2021 | 1,343 | 1,343 | ||||
| 2020 | 1,712 | 1,712 | ||||
| 2019 | 2,174 | 2,174 | ||||
| 2018 | 1,826 | 1,826 | ||||
| 2017 | 1,735 | 1,735 | ||||
| 2016 | 1,416 | 1,416 | ||||
| 2015 | 2,151 | 2,151 | ||||
| 2014 | 2,137 | 2,137 | ||||
| 2013 | 1,066 | 1,066 | ||||
| 2012 | 952 | 952 | ||||
| 2011 | 909 | 909 | ||||
| 2010 | 804 | 804 | ||||
| 2009 | 672 | 672 | ||||
| 2008 | 838 | 838 | ||||
| 2001 | 560 | 560 | ||||
| 2000 | 560 | 560 | ||||
| 1997 | 503 | 503 | ||||
| 1996 | 499 | 499 | ||||
▎ 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.