EXXONMOBIL CHEMICAL BAYTOWN CHEMICAL PLANT

  • Regulated Entity Reference Number: RN102574803
  • Primary Business: PETROCHEMICAL MANUFACTURING PLANT
  • County: HARRIS
  • Nearest City: BAYTOWN
  • Nearest Zipcode: 77520
  • Physical Location: No physical location description on file.
  • TCEQ reference

Emission Events

  Tracking Number Event began Event ended Duration Total Released
437255 03/05/2025 07:30 AM 03/05/2025 07:40 AM 0.17 0.88
ContaminantAmount Released
Benzene 0.33 lbs
C9 Hydrocarbons 0.00 lbs
Ethylbenzene 0.00 lbs
Hexane 0.17 lbs
Toluene 0.23 lbs
Xylenes 0.15 lbs
437023 03/01/2025 05:25 PM 03/01/2025 09:34 PM 4.15 743.98
ContaminantAmount Released
1-Butene 14.40 lbs
Cis-butene-2 156.15 lbs
Isobutane 2.61 lbs
Isobutylene 2.25 lbs
Trans-butene-2 185.33 lbs
n-butane 383.24 lbs
415589 01/14/2024 08:38 AM 01/14/2024 03:59 PM 7.35 14,676.47
ContaminantAmount Released
1-Butene + Isobutylene 62.02 lbs
Acetylene 0.00 lbs
Butadiene, 1-3 0.00 lbs
Butane, N- 0.00 lbs
Carbon Monoxide 5,299.34 lbs
Cis-butene-2 0.00 lbs
Cyclohexane 1,590.64 lbs
Ethylene (gaseous) 6,817.13 lbs
Hexene 134.31 lbs
Isobutane 0.00 lbs
Nitrogen Oxides (NOx) 671.57 lbs
Propane 9.89 lbs
Propylene (Propene) 91.56 lbs
Sulfur dioxide 0.01 lbs
Trans-butene-2 0.00 lbs
373906 02/04/2022 10:57 AM 02/04/2022 11:20 AM 0.38 236.83
ContaminantAmount Released
Ethylene (gaseous) 30.82 lbs
Propane 10.77 lbs
Propylene (Propene) 195.24 lbs
352442 03/10/2021 06:10 AM 03/10/2021 10:30 AM 4.33 756.05
ContaminantAmount Released
Benzene 83.22 lbs
Ethylbenzene 8.11 lbs
Sulfolane 529.26 lbs
Toluene 67.19 lbs
VOC( unspeciated) 37.81 lbs
Xylenes 30.47 lbs
352143 03/04/2021 06:00 AM 03/04/2021 01:45 PM 7.75 59.43
ContaminantAmount Released
Benzene 25.60 lbs
Ethylbenzene 2.50 lbs
Toluene 20.71 lbs
VOC( unspeciated) 1.25 lbs
Xylenes 9.38 lbs
348477 01/02/2021 05:30 PM 01/02/2021 06:10 PM 0.67 71.31
ContaminantAmount Released
Isobutylene 17.24 lbs
tert-butyl alcohol 54.07 lbs
340028 08/03/2020 08:57 PM 08/04/2020 12:12 AM 3.25 129.07
ContaminantAmount Released
Hydrochloric acid 1.99 lbs
Propane 7.63 lbs
Propylene (Propene) 119.46 lbs
327542 01/02/2020 01:25 PM 01/02/2020 02:00 PM 0.58 181.39
ContaminantAmount Released
Hexane 0.67 lbs
Isobutyl alcohol 0.29 lbs
Propylene (Propene) 180.43 lbs
320487 09/09/2019 11:30 AM 09/09/2019 05:20 PM 5.83 29.40
ContaminantAmount Released
Toluene 29.40 lbs
297708 11/23/2018 08:23 AM 11/23/2018 10:15 AM 1.87 0.00
ContaminantAmount Released
Opacity 0.00 lbs
293712 10/05/2018 4:30PM 10/06/2018 17.50 181.00
ContaminantAmount Released
Hypochlorous Acid 181.00 lbs
  276112 01/01/2018 01/07/2018 144.00 0.00
ContaminantAmount Released
265146 08/02/2017 1:45PM 08/02/2017 0.48 0.00
ContaminantAmount Released
Sewage 0.00 lbs
289692 08/02/2017 1:35PM 08/02/2017 0.65 0.00
ContaminantAmount Released
Sewage 0.00 lbs
259883 06/02/2017 06/02/2017 0.00 0.00
ContaminantAmount Released
Sewage 0.00 lbs
252608 02/17/2017 11:00AM 02/17/2017 10.00 306.80
ContaminantAmount Released
1-Butene 121.80 lbs
Butane, N- 7.60 lbs
Carbon Monoxide 4.60 lbs
Cis-butene-2 3.70 lbs
Ethylene (gaseous) 0.00 lbs
Isobutane 147.10 lbs
Pentenes 16.10 lbs
Propane 0.00 lbs
Propylene (Propene) 0.00 lbs
Trans-butene-2 5.90 lbs
249193 12/20/2016 6:00PM 12/21/2016 9.00 223.10
ContaminantAmount Released
Ethylbenzene 6.70 lbs
Orthoxylene 8.90 lbs
P-Xylene 26.80 lbs
Paradiethylbenzene 151.70 lbs
Toluene 2.20 lbs
metaxylene 26.80 lbs
231585 04/18/2016 6:20AM 04/18/2016 0.25 113.69
ContaminantAmount Released
Toluene 113.69 lbs
215362 06/04/2015 8:02PM 06/04/2015 0.05 4,229.99
ContaminantAmount Released
1-Butene 0.00 lbs
Cis-butene-2 0.00 lbs
Isobutylene 4,229.98 lbs
Trans-butene-2 0.00 lbs
  213617 04/04/2015 04/09/2015 120.00 0.00
ContaminantAmount Released
211493 03/17/2015 4:50PM 03/17/2015 0.33 453.30
ContaminantAmount Released
Propane 2.30 lbs
Propylene (Propene) 451.00 lbs
211542 03/05/2015 6:50AM 03/05/2015 9.50 880.50
ContaminantAmount Released
1-Butene 0.44 lbs
Butane, N- 0.42 lbs
Cis-butene-2 0.05 lbs
Ethylene, gaseous 0.16 lbs
Isobutane 0.36 lbs
Isobutylene 0.44 lbs
Isopentane 1.41 lbs
Propane 0.88 lbs
Propylene (Propene) 7.23 lbs
Toluene 520.09 lbs
Trans-butene-2 0.07 lbs
Xylenes 348.95 lbs
207825 12/28/2014 12:55AM 12/28/2014 3.08 16,324.77
ContaminantAmount Released
1-Butene 69.24 lbs
Carbon Monoxide 74.13 lbs
Cis-butene-2 0.08 lbs
Hexane 30.91 lbs
Hydrogen chloride 15,712.94 lbs
Isobutane 13.43 lbs
Isoprene 10.30 lbs
Methyl chloride 398.18 lbs
Nitrogen Oxides 14.71 lbs
Opacity 0.00 lbs
Propane 0.18 lbs
Trans-butene-2 0.67 lbs
  206510 11/15/2014 11/17/2014 48.00 0.00
ContaminantAmount Released
  206508 11/06/2014 11/11/2014 120.00 0.00
ContaminantAmount Released
  206265 11/02/2014 11/06/2014 97.00 0.00
ContaminantAmount Released
  205136 10/04/2014 10/06/2014 48.00 0.00
ContaminantAmount Released
  204023 09/18/2014 09/23/2014 120.00 0.00
ContaminantAmount Released
  203198 09/03/2014 09/04/2014 24.00 0.00
ContaminantAmount Released
202963 08/28/2014 10:00PM 08/28/2014 0.38 68.00
ContaminantAmount Released
Propane 5.60 lbs
Propylene (Propene) 62.40 lbs
  200484 06/19/2014 06/24/2014 120.00 0.00
ContaminantAmount Released
191227 11/21/2013 12:00PM 11/22/2013 21.00 4,947.57
ContaminantAmount Released
Carbon Monoxide 0.00 lbs
Carbonyl sulfide 3.60 lbs
Hydrogen Sulfide 50.01 lbs
Hydrogen cyanide 0.11 lbs
Nitrous Oxide 0.00 lbs
Propane 0.11 lbs
Sulfur dioxide 4,893.74 lbs
173019 09/01/2012 4:57AM 09/01/2012 0.35 6,662.46
ContaminantAmount Released
Carbon Monoxide 0.00 lbs
Carbonyl sulfide 4.84 lbs
Hydrogen Sulfide 68.80 lbs
Hydrogen cyanide 0.07 lbs
Methanol 0.01 lbs
Nitrogen Oxides 5.00 lbs
Sulfur dioxide 6,583.30 lbs
VOC( unspeciated) 0.43 lbs
166583 03/29/2012 12:04AM 03/29/2012 9.92 9,269.73
ContaminantAmount Released
Butanes 0.00 lbs
Carbon Monoxide 0.00 lbs
Hexane 0.00 lbs
Hydrogen chloride 9,179.68 lbs
Isobutylene 9.35 lbs
Methyl chloride 80.70 lbs
NOX 0.00 lbs
Propadiene 0.00 lbs
Propane 0.00 lbs
166006 03/14/2012 8:00AM 03/14/2012 0.53 7,540.00
ContaminantAmount Released
Propane 510.00 lbs
Propylene (Propene) 7,030.00 lbs
155989 06/21/2011 10:25AM 06/21/2011 12.90 1,476.00
ContaminantAmount Released
Ammonia 0.00 lbs
Carbon Monoxide 0.00 lbs
Carbonyl sulfide 0.83 lbs
Hydrogen Sulfide 15.11 lbs
NOX 0.00 lbs
Sulfur dioxide 1,460.06 lbs
VOC 0.00 lbs
152760 04/01/2011 3:57AM 04/01/2011 3.12 6,916.07
ContaminantAmount Released
Carbon Monoxide 54.82 lbs
Hexane 3.92 lbs
Hydrochloric acid 6,642.87 lbs
Isobutylene 13.01 lbs
Isoprene 3.62 lbs
Methyl chloride 187.77 lbs
NOX 10.06 lbs
152424 03/24/2011 8:50AM 03/24/2011 5.58 450.98
ContaminantAmount Released
Carbon Monoxide 1.67 lbs
Ethylene (gaseous) 448.98 lbs
NOX 0.33 lbs
148767 12/24/2010 1:18AM 12/24/2010 3.60 299.84
ContaminantAmount Released
Benzene 40.48 lbs
Butane 2.52 lbs
Ethylbenzene 12.29 lbs
Hexane 52.20 lbs
Octanes 12.48 lbs
Orthoxylene 12.89 lbs
Other 41.57 lbs
Pentane 18.36 lbs
Toluene 67.77 lbs
metaxylene 27.59 lbs
paraxylene 11.69 lbs
147288 11/11/2010 5:03AM 11/11/2010 3.22 3,751.70
ContaminantAmount Released
Ammonia 0.00 lbs
Carbon Monoxide 0.00 lbs
Carbonyl sulfide 2.90 lbs
Hydrogen Sulfide 37.90 lbs
Hydrogen cyanide 0.00 lbs
Methanol 0.00 lbs
NOX 0.00 lbs
Propane 0.00 lbs
Sulfur dioxide 3,710.90 lbs
146332 10/16/2010 6:10AM 10/16/2010 7.70 4,610.00
ContaminantAmount Released
Naptha 4,610.00 lbs
143387 08/10/2010 10:26AM 08/11/2010 16.20 9,548.86
ContaminantAmount Released
Carbon Monoxide 42.00 lbs
Hexane 44.26 lbs
Hydrogen chloride 8,985.98 lbs
Isobutylene 12.55 lbs
Isoprene 4.17 lbs
Methyl chloride 459.00 lbs
NOX 0.90 lbs
143032 08/02/2010 7:55AM 08/02/2010 4.33 184.07
ContaminantAmount Released
Benzene 0.00 lbs
Isobutylene 183.88 lbs
VOC 0.19 lbs
142965 07/30/2010 10:09PM 07/31/2010 3.20 225.40
ContaminantAmount Released
Carbon Monoxide 86.80 lbs
Nitrogen Oxides 12.00 lbs
Propylene (Propene) 126.60 lbs
140499 06/02/2010 10:30AM 06/02/2010 0.25 2,174.76
ContaminantAmount Released
Carbon Monoxide 15.94 lbs
Carbonyl sulfide 1.53 lbs
Hydrogen Sulfide 21.82 lbs
Nitrogen Oxides 2.28 lbs
Sulfur dioxide 2,132.90 lbs
VOC 0.29 lbs
133775 12/28/2009 4:00PM 12/28/2009 2.00 6,316.77
ContaminantAmount Released
Ammonia 0.01 lbs
Carbon Monoxide 331.01 lbs
Carbonyl sulfide 4.33 lbs
Hydrogen Sulfide 61.66 lbs
Hydrogen cyanide 0.95 lbs
Methanol 0.18 lbs
NOX 13.59 lbs
Propane 0.45 lbs
Sulfur dioxide 5,904.59 lbs
133644 12/23/2009 5:00AM 12/23/2009 12.00 49,804.15
ContaminantAmount Released
Ammonia 0.03 lbs
Carbon Monoxide 272.18 lbs
Carbonyl sulfide 35.86 lbs
Hydrogen Sulfide 510.96 lbs
Hydrogen cyanide 3.64 lbs
Methanol 0.70 lbs
NOX 41.53 lbs
Propane 2.36 lbs
Sulfur dioxide 48,936.89 lbs
127839 08/06/2009 2:45PM 08/07/2009 11.40 8,812.56
ContaminantAmount Released
Butane 405.00 lbs
Butene 534.00 lbs
Carbon Monoxide 1,878.00 lbs
Cis-butene-2 56.00 lbs
Ethylene (gaseous) 118.00 lbs
Isobutane 245.00 lbs
Isobutylene 40.00 lbs
NOX 285.00 lbs
Nitrogen Oxides 9.00 lbs
Opacity 0.00 lbs
Propane 381.00 lbs
Propylene (Propene) 2,699.50 lbs
Sulfur dioxide 22.06 lbs
Trans-butene-2 124.00 lbs
VOC 2,016.00 lbs
127854 08/06/2009 08/06/2009 0.00 0.00
ContaminantAmount Released
Oily Water 0.00 lbs
127416 07/28/2009 9:40PM 07/28/2009 0.53 1,805.38
ContaminantAmount Released
Carbon Monoxide 59.53 lbs
Carbonyl sulfide 1.23 lbs
Hydrogen Sulfide 17.59 lbs
Hydrogen cyanide 0.29 lbs
Methanol 0.06 lbs
NOX 7.24 lbs
Propylene (Propene) 0.54 lbs
Sulfur dioxide 1,718.90 lbs
126665 07/10/2009 1:00PM 07/10/2009 8.00 1,458.10
ContaminantAmount Released
Carbon Monoxide 561.90 lbs
NOX 77.80 lbs
Propylene (Propene) 818.40 lbs
124328 05/16/2009 1:13PM 05/16/2009 6.50 319.00
ContaminantAmount Released
Butane 13.00 lbs
Butene 23.00 lbs
Carbon Monoxide 106.00 lbs
Cis-butene-2 5.00 lbs
Ethylene (gaseous) 101.00 lbs
Isobutane 5.00 lbs
NOX 20.00 lbs
Propane 2.00 lbs
Propylene (Propene) 16.00 lbs
Trans-butene-2 9.00 lbs
VOC 19.00 lbs
123602 04/29/2009 3:35PM 04/29/2009 1.58 607.00
ContaminantAmount Released
Propane 38.00 lbs
Propylene (Propene) 558.00 lbs
VOC 11.00 lbs
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