Facility detail

WESTLAKE STYRENE LLC - STYRENE MARINE TERMINAL

1820 PAK TANK RD, SULPHUR, LA, 70665

Parent company: WESTLAKE CORP

Carcinogen — EPA classifications across all reporting years

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Year-over-year total releases

Reported on-site TRI releases in pounds (lbs), grouped by reporting year.

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	Benzene	Total (lbs)
2024	14,960	173	15,133
2023	14,172	174	14,345
2022	5,309	177	5,486
2021	5,371	172	5,543
2020	5,202	155	5,357
2019	14,511	148	14,659
2018	14,621	161	14,782
2017	18,788	353	19,141
2016	19,168	443	19,611
2015	19,231	440	19,671
2014	13,827	442	14,269
2013	17,901	445	18,346
2012	10,046	165	10,211
2011	13,275	431	13,706
2010	12,436	185	12,621
2009	13,461	150	13,611
2008	10,692	223	10,915
2007	10,573	166	10,739
2006	10,889	167	11,056
2005	10,476	280	10,756
2004	12,138	200	12,338
2003	11,001	151	11,152
2002	23,209	164	23,373
2001	10,351	105	10,456

▎ 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.