Facility detail

WOLFSPEED INC.

4600 SILICON DR, DURHAM, NC, 27703

Parent company: WOLFSPEED INC

Carcinogen PBT — 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	1,1,1-Trichloroethane	Ammonia	Hydrogen fluoride	Certain glycol ethers	Trichloroethylene	Total (lbs)
2024	—	2,608	3,704	153	—	7,335
2023	—	2,991	4,835	414	—	9,223
2022	—	2,362	5,357	240	—	10,142
2021	—	2,170	3,912	388	—	9,557
2020	—	2,252	3,966	464	—	10,136
2019	—	2,445	4,142	343	—	10,641
2018	—	2,635	4,787	524	—	12,991
2017	—	2,694	5,392	549	—	13,355
2016	—	2,324	3,722	551	—	9,558
2015	—	2,276	2,389	503	—	7,188
2014	—	4,975	2,881	553	—	10,437
2013	—	398	4,450	430	—	7,222
2012	—	2,866	3,831	250	—	7,452
2011	—	2,283	3,924	250	—	6,957
2010	—	2,575	3,924	13,202	—	19,951
2009	—	1,697	500	10,993	—	13,690
2008	—	2,305	500	11,222	—	14,527
2007	—	1,032	500	10,038	—	12,070
2006	—	2,628	500	7,013	—	10,641
2005	—	1,005	260	1,655	—	3,750
2004	—	91	—	—	—	156
2003	—	2,377	—	—	—	2,413
2002	—	15,100	—	—	—	15,100
2001	—	23,070	—	—	—	23,070
2000	—	10,407	—	—	—	10,407
1999	—	5,913	—	—	—	5,913
1998	—	1,642	—	—	—	1,642
1989	105,248	—	250	—	2,838	109,086
1988	251,920	—	—	—	16,473	268,393
1987	—	—	—	—	13,155	13,905

▎ 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.