SI GROUP TEXAS OPERATIONS

  • Regulated Entity Reference Number: RN100218999
  • Primary Business: INDUSTRIAL ALKYL PHENOL/PETROCHEMICAL
  • County: BRAZORIA
  • Nearest City: FREEPORT
  • Nearest Zipcode: 77541
  • Physical Location: 702 FM 523, Freeport, TX
  • TCEQ reference

Emission Events

  Tracking Number Event began Event ended Duration Total Released
449972 12/09/2025 05:41 AM 12/09/2025 06:28 AM 0.78 1,000.00
ContaminantAmount Released
Isobutylene 1,000.00 lbs
442509 06/23/2025 02:00 PM 06/23/2025 02:11 PM 0.18 35.00
ContaminantAmount Released
2,4-dimethylanisole 2.00 lbs
Cresol(s) (mixed isomers) 20.00 lbs
Dimethylphenol, 2,4- 12.00 lbs
Methylphenols 1.00 lbs
418846 03/13/2024 05:00 PM 03/13/2024 05:31 PM 0.52 0.00
ContaminantAmount Released
Opacity 0.00 lbs
417063 02/08/2024 02:30 PM 02/08/2024 03:30 PM 1.00 0.00
ContaminantAmount Released
Opacity 0.00 lbs
351298 02/23/2021 11:25 AM 02/23/2021 11:27 AM 0.03 1,192.00
ContaminantAmount Released
Isobutene 1,192.00 lbs
334048 04/14/2020 03:30 PM 04/14/2020 04:15 PM 0.75 339.00
ContaminantAmount Released
Isobutylene 339.00 lbs
334044 04/14/2020 02:50 PM 04/14/2020 03:11 PM 0.35 0.00
ContaminantAmount Released
Opacity 0.00 lbs
319705 08/26/2019 04:30 PM 08/26/2019 05:00 PM 0.50 240.00
ContaminantAmount Released
Isobutylene 240.00 lbs
289563 08/03/2018 2:45AM 08/03/2018 5.00 1,199.00
ContaminantAmount Released
Isobutylene 1,199.00 lbs
293507 07/11/2018 7:00AM 07/12/2018 24.00 0.00
ContaminantAmount Released
Sewage 0.00 lbs
293504 07/04/2018 7:00AM 07/05/2018 24.00 0.00
ContaminantAmount Released
Sewage 0.00 lbs
289491 01/14/2018 10:10AM 01/14/2018 4.00 0.00
ContaminantAmount Released
Sewage 0.00 lbs
277138 01/08/2018 8:45AM 01/08/2018 6.58 0.00
ContaminantAmount Released
Sewage 0.00 lbs
289703 01/08/2018 8:45AM 01/08/2018 6.58 0.00
ContaminantAmount Released
Sewage 0.00 lbs
276232 01/02/2018 11:00AM 01/02/2018 4.00 0.00
ContaminantAmount Released
Sewage 0.00 lbs
289688 01/02/2018 11:00AM 01/02/2018 4.00 0.00
ContaminantAmount Released
Sewage 0.00 lbs
276019 12/27/2017 8:45AM 12/27/2017 3.25 0.00
ContaminantAmount Released
Sewage 0.00 lbs
275260 12/19/2017 1:00PM 12/19/2017 3.75 0.00
ContaminantAmount Released
Sewage 0.00 lbs
274637 12/08/2017 1:00PM 12/08/2017 1.00 0.00
ContaminantAmount Released
Sewage 0.00 lbs
274943 12/06/2017 12/06/2017 0.00 0.00
ContaminantAmount Released
Sewage 0.00 lbs
294014 12/05/2017 2:00PM 12/05/2017 6.75 0.00
ContaminantAmount Released
Sewage 0.00 lbs
274031 12/05/2017 2:00PM 12/05/2017 6.75 0.00
ContaminantAmount Released
Sewage 0.00 lbs
273907 12/03/2017 8:30PM 12/04/2017 11.50 0.00
ContaminantAmount Released
Sewage 0.00 lbs
273746 11/30/2017 9:40AM 11/30/2017 2.33 0.00
ContaminantAmount Released
Sewage 0.00 lbs
254309 01/02/2017 4:00PM 01/02/2017 2.67 0.00
ContaminantAmount Released
Sewage 0.00 lbs
248060 11/29/2016 12:20PM 11/29/2016 4.00 0.00
ContaminantAmount Released
Sewage 0.00 lbs
245583 10/17/2016 11:00AM 10/17/2016 4.00 0.00
ContaminantAmount Released
Sewage 0.00 lbs
243985 09/17/2016 3:15PM 09/17/2016 6.50 0.00
ContaminantAmount Released
Sewage 0.00 lbs
243983 09/16/2016 3:45PM 09/16/2016 4.00 0.00
ContaminantAmount Released
Sewage 0.00 lbs
289558 08/28/2016 8:45AM 08/29/2016 18.58 0.00
ContaminantAmount Released
Sewage 0.00 lbs
289151 07/24/2016 9:30AM 07/24/2016 3.75 0.00
ContaminantAmount Released
Sewage 0.00 lbs
289149 07/17/2016 3:40PM 07/17/2016 3.50 0.00
ContaminantAmount Released
Sewage 0.00 lbs
289735 06/28/2016 6:45AM 06/28/2016 4.00 0.00
ContaminantAmount Released
Sewage 0.00 lbs
289146 06/13/2016 12:30PM 06/13/2016 2.50 0.00
ContaminantAmount Released
Sewage 0.00 lbs
234988 06/05/2016 3:00PM 06/05/2016 3.25 0.00
ContaminantAmount Released
Sewage 0.00 lbs
234274 05/31/2016 3:00PM 05/31/2016 3.42 0.00
ContaminantAmount Released
Sewage 0.00 lbs
233787 05/19/2016 3:15PM 05/20/2016 9.92 0.00
ContaminantAmount Released
Sewage 0.00 lbs
234913 05/07/2016 7:05AM 05/11/2016 100.17 0.00
ContaminantAmount Released
Sewage 0.00 lbs
231996 04/21/2016 1:35PM 04/21/2016 4.00 0.00
ContaminantAmount Released
Sewage 0.00 lbs
231689 04/18/2016 7:00AM 04/18/2016 3.50 0.00
ContaminantAmount Released
Sewage 0.00 lbs
223673 11/30/2015 12:40PM 11/30/2015 8.00 27,236.00
ContaminantAmount Released
Butene 187.00 lbs
Phenol 14,246.00 lbs
alkylphenol 12,803.00 lbs
149517 01/14/2011 6:00PM 01/15/2011 19.42 0.00
ContaminantAmount Released
UNKNOWN SUBSTANCE 0.00 lbs
131182 10/14/2009 10:00AM 10/23/2009 225.33 0.00
ContaminantAmount Released
WASTEWATER SLUDGE 0.00 lbs
130026 09/27/2009 12:45PM 09/28/2009 23.73 230.00
ContaminantAmount Released
Other Organics 230.00 lbs
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