Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
HALDOR TOPSOE INC
10010 BAYPORT RD, PASADENA, TX, 77507
Parent company: HALDOR TOPSOE/ AS
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 | Ammonia | Molybdenum trioxide | n-Butyl alcohol | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | Aluminum oxide (fibrous forms) | Total (lbs) |
| 2024 | 6,166 | 1,843 | — | 2,038 | — | 11,385 |
| 2023 | 6,166 | 1,843 | — | 550 | — | 9,332 |
| 2022 | 1,837 | 2,074 | — | 3,391 | — | 7,960 |
| 2021 | 1,755 | 1,972 | — | 745 | — | 5,352 |
| 2020 | 2,223 | 2,400 | — | 836 | — | 6,144 |
| 2019 | 2,553 | 2,792 | — | 836 | — | 7,423 |
| 2018 | 2,849 | 3,000 | — | 959 | — | 7,476 |
| 2017 | 9,553 | 2,073 | 1,098 | 3,296 | — | 17,152 |
| 2016 | 10,081 | 2,082 | 1,373 | 663 | — | 15,060 |
| 2015 | 10,746 | 2,061 | 1,420 | 640 | — | 15,871 |
| 2014 | 11,121 | 2,172 | 1,214 | 193 | — | 15,312 |
| 2013 | 10,808 | 1,848 | 1,269 | 214 | — | 14,778 |
| 2012 | 11,055 | 1,851 | 1,284 | 265 | — | 15,173 |
| 2011 | 10,678 | 1,852 | 1,131 | 97 | — | 14,656 |
| 2010 | 10,953 | 2,033 | 1,669 | 52 | — | 15,624 |
| 2009 | 10,714 | 2,028 | 1,594 | 32 | — | 15,389 |
| 2008 | 11,206 | 2,047 | 2,440 | 855 | — | 17,547 |
| 2007 | 11,105 | 2,047 | 5,646 | 478 | — | 20,276 |
| 2006 | 11,776 | 2,184 | 5,816 | 577 | — | 21,483 |
| 2005 | 11,071 | 2,448 | 5,402 | 626 | — | 20,591 |
| 2004 | 12,076 | 1,983 | 5,488 | 353 | — | 21,000 |
| 2003 | 8,357 | 2,123 | 2,192 | 232 | — | 13,736 |
| 2002 | 13,618 | 892 | 13,096 | — | — | 32,523 |
| 2001 | 22,314 | 1,533 | — | — | — | 24,364 |
| 2000 | 31,648 | 3,591 | — | — | — | 36,399 |
| 1999 | 16,690 | 3,365 | — | — | — | 22,077 |
| 1998 | 18,639 | 288 | — | 250 | — | 19,297 |
| 1997 | 1,059 | 750 | — | — | — | 2,141 |
| 1996 | 7,432 | 750 | — | — | — | 8,493 |
| 1995 | 5,823 | 750 | — | — | — | 7,363 |
| 1994 | 1,082 | 750 | — | — | — | 3,362 |
| 1993 | 4,360 | 750 | — | — | — | 6,155 |
| 1992 | 18,766 | 563 | — | — | — | 20,129 |
| 1991 | 20,936 | 750 | — | — | — | 22,736 |
| 1990 | 26,508 | 500 | — | — | — | 28,298 |
| 1989 | 46,677 | 500 | — | — | — | 50,177 |
| 1988 | 33,324 | 500 | — | — | — | 35,574 |
| 1987 | — | 500 | — | — | 11,253 | 11,753 |
▎ 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.