Facility detail

DW-NATIONAL STANDARD-STILLWATER LLC

3602 N PERKINS RD, STILLWATER, OK, 74075

Parent company: HEICO HOLDING INC

Carcinogen PBT — EPA classifications across all reporting years

Year-over-year total releases

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

The 10 chemicals with the highest cumulative on-site releases across all available years.

Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.

Year	Xylene (mixed isomers)	Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	Lead	Nickel	Zinc compounds	Total
2024	—	—	—	—	—	2
2023	—	—	—	—	43	221
2022	—	—	—	—	52	291
2021	—	—	—	—	58	323
2020	—	—	—	—	—	321
2019	—	—	—	—	—	193
2018	—	—	—	—	—	393
2017	—	—	—	—	—	526
2016	—	—	—	—	—	580
2015	—	—	—	—	—	587
2014	—	—	—	—	—	835
2013	—	—	—	—	—	803
2012	—	—	—	—	—	301
2011	—	—	—	—	—	301
2010	—	—	—	—	—	295
2009	—	—	—	—	—	0
2008	—	—	—	—	6	6
2007	—	—	880	—	8	888
2006	—	—	542	—	8	550
2005	—	—	3,080	—	8	3,088
2004	—	—	4,740	—	8	4,748
2003	—	—	9,260	—	8	9,268
2002	—	—	3,140	—	—	3,140
2001	—	—	43,401	20,088	8,279	82,806
2000	—	—	1,434	—	176	1,655
1999	—	—	1,476	—	181	1,703
1998	—	—	1,620	—	162	1,836
1997	22,238	15,214	1,824	—	1,084	41,860
1996	29,200	18,561	1,412	—	410	49,686
1995	27,296	18,561	1,730	—	639	49,059
1994	30,996	23,281	1,871	—	1,230	58,682
1993	24,638	18,392	1,150	—	1,824	47,818
1992	29,872	18,260	605	—	500	50,737
1991	25,432	17,751	603	—	500	45,541
1990	25,468	12,195	586	—	500	40,004
1989	23,960	12,257	634	—	—	38,351
1988	34,860	11,982	—	—	—	48,342
1987	19,854	30,860	640	—	—	52,354