Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
CHAPARRAL STEEL MIDLOTHIAN LP
300 WARD RD, MIDLOTHIAN, TX, 76065
Parent company: GERDAU 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 | Zinc compounds | Lead compounds | Aluminum oxide (fibrous forms) | Manganese compounds | Zinc (fume or dust) | Total (lbs) |
| 2024 | 5,960 | — | — | 3,023 | — | 11,076 |
| 2023 | 6,531 | — | — | 6,005 | — | 15,082 |
| 2022 | 5,903 | — | — | — | — | 10,121 |
| 2021 | 6,044 | — | — | — | — | 10,443 |
| 2020 | 6,427 | — | — | — | — | 12,017 |
| 2019 | 6,260 | — | — | 3,343 | — | 11,748 |
| 2018 | 5,699 | — | — | — | — | 10,227 |
| 2017 | 6,076 | 814 | — | 3,331 | — | 11,477 |
| 2016 | 4,807 | 652 | — | 2,610 | — | 9,087 |
| 2015 | 6,680 | 884 | — | 5,019 | — | 14,104 |
| 2014 | 6,047 | 833 | — | 2,636 | — | 10,721 |
| 2013 | 5,147 | 802 | — | 2,370 | — | 9,393 |
| 2012 | 6,313 | 945 | — | 2,760 | — | 11,211 |
| 2011 | 6,037 | 909 | — | 2,360 | — | 10,384 |
| 2010 | 6,177 | 917 | — | 2,795 | — | 11,073 |
| 2009 | 4,346 | 647 | — | 1,787 | — | 7,568 |
| 2008 | 6,134 | 930 | — | 1,967 | — | 10,120 |
| 2007 | 7,049 | 1,072 | — | 2,439 | — | 11,862 |
| 2006 | 6,863 | 1,039 | — | 1,825 | — | 10,928 |
| 2005 | 6,268 | 950 | — | 1,953 | — | 10,303 |
| 2004 | 6,995 | 965 | — | 1,654 | — | 10,762 |
| 2003 | 17,710 | 2,495 | — | 3,554 | — | 25,011 |
| 2002 | 25,986 | 3,658 | — | 4,746 | — | 35,839 |
| 2001 | 25,632 | 3,594 | — | 4,780 | — | 35,447 |
| 2000 | 27,695 | 3,923 | — | 5,030 | — | 38,047 |
| 1999 | 25,591 | 3,655 | — | 3,350 | — | 52,087 |
| 1998 | 27,016 | 3,862 | — | 3,576 | — | 34,684 |
| 1997 | 29,971 | 4,324 | — | 3,980 | — | 38,533 |
| 1996 | — | — | — | — | 12,200 | 15,842 |
| 1995 | — | — | — | — | 12,244 | 15,918 |
| 1994 | — | — | — | — | 53,000 | 61,928 |
| 1993 | — | — | — | — | 36,000 | 44,248 |
| 1992 | — | — | — | — | 20,300 | 27,500 |
| 1991 | — | — | — | — | 22,000 | 29,120 |
| 1989 | 806,352 | 134,196 | — | 98,611 | — | 1,074,664 |
| 1988 | — | 736,766 | 458,741 | — | — | 1,316,877 |
| 1987 | 7,334,000 | — | — | — | — | 7,334,000 |
▎ 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.