Air Emission Event Report Database Incident 350680
Export emission point and contaminant information to 
Excel spreadsheet.
| Incident Tracking Number: | 350680 | Incident Status: | CLOSED |
|---|---|---|---|
| Report Type: | FINAL | Report Date: | 03/04/2021 |
| Name of Owner or Operator: | EXXON MOBIL CORPORATION | CN: | CN600123939 |
| Regulated Entity Name: | EXXON MOBIL CHEMICAL BAYTOWN OLEFINS PLANT | RN: | RN102212925 |
| Physical Location: | 3525 DECKER DR; BAYTOWN, TX 77520 | ||
| County: | HARRIS | ||
| Event/Activity Type: | EMISSIONS EVENT | ||
| Date and Time Event Discovered or Scheduled Activity Start: | 02/15/2021 03:09 AM |
|---|---|
| Date and Time Event or Scheduled Activity Ended: | 02/18/2021 12:59 AM |
| Event Duration: | 69 hours, 50 minutes |
| Process Unit or Area Common Names | |
|---|---|
| Olefins Plant Operating Units |
| Facility Common Name | Facility Identification Number (FIN) |
|---|---|
| ExxonMobil Baytown Olefins Plant | BOP |
| 1 - Emission Point Common Name: | Emission Point Number: | ||||||
|---|---|---|---|---|---|---|---|
| BOP-XX Furnaces | BOPXXFURNACE | ||||||
| List of Air Contaminant Compounds - 1 total | |||||||
| Description | Est. Quantity/ Opacity |
Units | Emission Limit |
Units | Authorization | ||
| Nitrogen Oxides | 778.01 | POUNDS | 45.2 | LBS/HR | 537.74 lbs of the total 778.01 lbs are authorized under Permit #102982. | ||
| 2 - Emission Point Common Name: | Emission Point Number: | ||||||
|---|---|---|---|---|---|---|---|
| Elevated Flare | FLAREXX1 | ||||||
| List of Air Contaminant Compounds - 17 total | |||||||
| Description | Est. Quantity/ Opacity |
Units | Emission Limit |
Units | Authorization | ||
| 1,3-BUTADIENE | 97.98 | POUNDS | 371.9 | LBS/HR | 97.98 lbs of the total 97.98 lbs are authorized under Permit #102982. | ||
| 1-Butene | 10.84 | POUNDS | 371.9 | LBS/HR | 10.84 lbs of the total 10.84 lbs are authorized under Permit #102982. | ||
| Acetylene | 13.54 | POUNDS | 371.9 | LBS/HR | 13.54 lbs of the total 13.54 lbs are authorized under Permit #102982. | ||
| Benzene | 43.43 | POUNDS | 371.9 | LBS/HR | 43.43 lbs of the total 43.43 lbs are authorized under Permit #102982. | ||
| Butane, N- | 10.91 | POUNDS | 371.9 | LBS/HR | 10.91 lbs of the total 10.91 lbs are authorized under Permit #102982. | ||
| C5s | 33.39 | POUNDS | 371.9 | LBS/HR | 33.39 lbs of the total 33.39 lbs are authorized under Permit #102982. | ||
| C6+ | 138.02 | POUNDS | 371.9 | LBS/HR | 138.02 lbs of the total 138.02 lbs are authorized under Permit #102982. | ||
| Carbon Monoxide | 1947.9 | POUNDS | 160.64 | LBS/HR | 1947.90 lbs of the total 1947.90 lbs are authorized under Permit #102982. | ||
| Cis-2-butene | 8.8 | POUNDS | 371.9 | LBS/HR | 8.80 lbs of the total 8.80 lbs are authorized under Permit #102982. | ||
| Ethylene (gaseous) | 1376.65 | POUNDS | 371.9 | LBS/HR | 1376.65 lbs of the total 1376.65 lbs are authorized under Permit #102982. | ||
| Isobutane | 0.03 | POUNDS | 371.9 | LBS/HR | 0.03 lbs of the total 0.03 lbs are authorized under Permit #102982. | ||
| Isobutene | 0.76 | POUNDS | 371.9 | LBS/HR | 0.76 lbs of the total 0.76 lbs are authorized under Permit #102982. | ||
| Nitrogen Oxides | 315.98 | POUNDS | 22.24 | LBS/HR | 285.81 lbs of the total 315.98 lbs are authorized under Permit #102982. | ||
| Propane | 5.37 | POUNDS | 371.9 | LBS/HR | 5.37 lbs of the total 5.37 lbs are authorized under Permit #102982. | ||
| Propylene (Propene) | 49.09 | POUNDS | 371.9 | LBS/HR | 49.09 lbs of the total 49.09 lbs are authorized under Permit #102982. | ||
| Sulfur dioxide | 72.44 | POUNDS | 7.97 | LBS/HR | 72.44 lbs of the total 72.44 lbs are authorized under Permit #102982. | ||
| Trans-2-butene | 5.84 | POUNDS | 371.9 | LBS/HR | 5.84 lbs of the total 5.84 lbs are authorized under Permit #102982. | ||
| 3 - Emission Point Common Name: | Emission Point Number: | ||||||
|---|---|---|---|---|---|---|---|
| Expansion Flare | FLAREX | ||||||
| List of Air Contaminant Compounds - 18 total | |||||||
| Description | Est. Quantity/ Opacity |
Units | Emission Limit |
Units | Authorization | ||
| 1,3-BUTADIENE | 373.99 | POUNDS | 709.48 | LBS/HR | 249.70 lbs of the total 373.99 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Acetylene | 23.15 | POUNDS | 709.48 | LBS/HR | 14.17 lbs of the total 23.15 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Benzene | 40.2 | POUNDS | 709.48 | LBS/HR | 19.41 lbs of the total 40.20 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Butane, N- | 522.57 | POUNDS | 709.48 | LBS/HR | 326.56 lbs of the total 522.57 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| C10s | 2.09 | POUNDS | 709.48 | LBS/HR | 1.49 lbs of the total 2.09 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| C5s | 223.53 | POUNDS | 709.48 | LBS/HR | 160.15 lbs of the total 223.53 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| C6 (not including benzene) | 257.73 | POUNDS | 709.48 | LBS/HR | 184.66 lbs of the total 257.73 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| C7s | 63.96 | POUNDS | 709.48 | LBS/HR | 45.82 lbs of the total 63.96 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| C8s | 77.03 | POUNDS | 709.48 | LBS/HR | 55.19 lbs of the total 77.03 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Carbon Monoxide | 18558.69 | POUNDS | 6627.58 | LBS/HR | 8307.00 lbs of the total 18558.69 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Cis-2-butene | 32.43 | POUNDS | 709.48 | LBS/HR | 20.47 lbs of the total 32.43 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Ethylene | 6249.64 | POUNDS | 709.48 | LBS/HR | 3993.84 lbs of the total 6249.64 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Isobutane | 47.55 | POUNDS | 709.48 | LBS/HR | 30.85 lbs of the total 47.55 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Isobutene | 151.48 | POUNDS | 709.48 | LBS/HR | 95.25 lbs of the total 151.48 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Nitrogen Oxides | 2653.72 | POUNDS | 1630.75 | LBS/HR | 1897.89 lbs of the total 2653.72 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Propane | 235.8 | POUNDS | 709.48 | LBS/HR | 174.58 lbs of the total 235.80 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Propylene (Propene) | 1406.49 | POUNDS | 709.48 | LBS/HR | 950.86 lbs of the total 1406.49 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Trans-2-butene | 76.75 | POUNDS | 709.48 | LBS/HR | 50.99 lbs of the total 76.75 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| 4 - Emission Point Common Name: | Emission Point Number: | ||||||
|---|---|---|---|---|---|---|---|
| LC-02 Relief Valve Telltale Tubing Leak | N/A | ||||||
| List of Air Contaminant Compounds - 14 total | |||||||
| Description | Est. Quantity/ Opacity |
Units | Emission Limit |
Units | Authorization | ||
| 1,3 Butadiene | 18.93 | POUNDS | 0.0 | Not specifically authorized. | |||
| 1-Butene | 2.96 | POUNDS | 0.0 | Not specifically authorized. | |||
| Acetylene | 3.03 | POUNDS | 0.0 | Not specifically authorized. | |||
| Benzene | 11.19 | POUNDS | 0.0 | Not specifically authorized. | |||
| Butane, N- | 12.06 | POUNDS | 0.0 | Not specifically authorized. | |||
| C6 (not including benzene) | 2.46 | POUNDS | 0.0 | Not specifically authorized. | |||
| Cis-2-butene | 1.98 | POUNDS | 0.0 | Not specifically authorized. | |||
| Ethylene | 215.99 | POUNDS | 0.0 | Not specifically authorized. | |||
| Isobutane | 1.6 | POUNDS | 0.0 | Not specifically authorized. | |||
| Isobutene | 2.75 | POUNDS | 0.0 | Not specifically authorized. | |||
| Pentenes | 10.22 | POUNDS | 0.0 | Not specifically authorized. | |||
| Propane | 9.09 | POUNDS | 0.0 | Not specifically authorized. | |||
| Propylene (Propene) | 39.01 | POUNDS | 0.0 | Not specifically authorized. | |||
| Toluene | 1.13 | POUNDS | 0.0 | Not specifically authorized. | |||
| 5 - Emission Point Common Name: | Emission Point Number: | ||||||
|---|---|---|---|---|---|---|---|
| Multi-Point Ground Flare | FLAREXX2 | ||||||
| List of Air Contaminant Compounds - 17 total | |||||||
| Description | Est. Quantity/ Opacity |
Units | Emission Limit |
Units | Authorization | ||
| 1,3-BUTADIENE | 58.58 | POUNDS | 3991.46 | LBS/HR | Portions may be authorized under Permit# 102982. | ||
| 1-Butene | 6.48 | POUNDS | 3991.46 | LBS/HR | Portions may be authorized under Permit# 102982. | ||
| Acetylene | 13.67 | POUNDS | 3991.46 | LBS/HR | Portions may be authorized under Permit# 102982. | ||
| Benzene | 26.81 | POUNDS | 3991.46 | LBS/HR | Portions may be authorized under Permit# 102982. | ||
| Butane, N- | 6.77 | POUNDS | 3991.46 | LBS/HR | Portions may be authorized under Permit# 102982. | ||
| C5s | 20.57 | POUNDS | 3991.46 | LBS/HR | Portions may be authorized under Permit# 102982. | ||
| C6+ | 85.01 | POUNDS | 3991.46 | LBS/HR | Portions may be authorized under Permit# 102982. | ||
| Carbon Monoxide | 24599.95 | POUNDS | 3742.46 | LBS/HR | Portions may be authorized under Permit# 102982. | ||
| Cis-2-butene | 4.87 | POUNDS | 3991.46 | LBS/HR | Portions may be authorized under Permit# 102982. | ||
| Ethylene (gaseous) | 1616.5 | POUNDS | 3991.46 | LBS/HR | Portions may be authorized under Permit# 102982. | ||
| Isobutane | 0.03 | POUNDS | 3991.46 | LBS/HR | Portions may be authorized under Permit# 102982. | ||
| Isobutene | 0.45 | POUNDS | 3991.46 | LBS/HR | Portions may be authorized under Permit# 102982. | ||
| Nitrogen Oxides | 13321.12 | POUNDS | 2309.32 | LBS/HR | Portions may be authorized under Permit# 102982. | ||
| Propane | 6.17 | POUNDS | 3991.46 | LBS/HR | Portions may be authorized under Permit# 102982. | ||
| Propylene (Propene) | 57.95 | POUNDS | 3991.46 | LBS/HR | Portions may be authorized under Permit# 102982. | ||
| Sulfur dioxide | 1203.31 | POUNDS | 233.32 | LBS/HR | Portions may be authorized under Permit# 102982. | ||
| Trans-2-butene | 3.47 | POUNDS | 3991.46 | LBS/HR | Portions may be authorized under Permit# 102982. | ||
| 6 - Emission Point Common Name: | Emission Point Number: | ||||||
|---|---|---|---|---|---|---|---|
| Primary Flare | FLARE1 | ||||||
| List of Air Contaminant Compounds - 16 total | |||||||
| Description | Est. Quantity/ Opacity |
Units | Emission Limit |
Units | Authorization | ||
| 1,3-BUTADIENE | 736.08 | POUNDS | 709.48 | LBS/HR | 234.95 lbs of the total 736.08 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Acetylene | 3.61 | POUNDS | 709.48 | LBS/HR | 1.33 lbs of the total 3.61 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Benzene | 9.35 | POUNDS | 709.48 | LBS/HR | 4.44 lbs of the total 9.35 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Butane, N- | 1163.91 | POUNDS | 709.48 | LBS/HR | 362.90 lbs of the total 1163.91 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| C5s | 14.85 | POUNDS | 709.48 | LBS/HR | 6.68 lbs of the total 14.85 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| C6 (not including benzene) | 2.06 | POUNDS | 709.48 | LBS/HR | 0.98 lbs of the total 2.06 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| C7s | 2.52 | POUNDS | 709.48 | LBS/HR | 1.20 lbs of the total 2.52 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Carbon Monoxide | 5624.33 | POUNDS | 6627.58 | LBS/HR | 1650.05 lbs of the total 5624.33 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Cis-2-butene | 45.16 | POUNDS | 709.48 | LBS/HR | 13.68 lbs of the total 45.16 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Ethylene | 886.13 | POUNDS | 709.48 | LBS/HR | 348.00 lbs of the total 886.13 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Isobutane | 87.66 | POUNDS | 709.48 | LBS/HR | 31.43 lbs of the total 87.66 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Isobutene | 219.4 | POUNDS | 709.48 | LBS/HR | 53.20 lbs of the total 219.40 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Nitrogen Oxides | 966.61 | POUNDS | 1630.75 | LBS/HR | 498.80 lbs of the total 966.61 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Propane | 383.32 | POUNDS | 709.48 | LBS/HR | 228.67 lbs of the total 383.32 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Propylene (Propene) | 2379.89 | POUNDS | 709.48 | LBS/HR | 1034.65 lbs of the total 2379.89 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Trans-2-butene | 80.06 | POUNDS | 709.48 | LBS/HR | 19.63 lbs of the total 80.06 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| 7 - Emission Point Common Name: | Emission Point Number: | ||||||
|---|---|---|---|---|---|---|---|
| Secondary Flare | FLARE2 | ||||||
| List of Air Contaminant Compounds - 16 total | |||||||
| Description | Est. Quantity/ Opacity |
Units | Emission Limit |
Units | Authorization | ||
| 1,3-BUTADIENE | 4469.64 | POUNDS | 709.48 | LBS/HR | 1058.88 lbs of the total 4469.64 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Acetylene | 33.68 | POUNDS | 709.48 | LBS/HR | 10.98 lbs of the total 33.68 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Benzene | 1616.46 | POUNDS | 709.48 | LBS/HR | 520.35 lbs of the total 1616.46 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Butane, N- | 9737.12 | POUNDS | 709.48 | LBS/HR | 2117.78 lbs of the total 9737.12 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| C5s | 893.5 | POUNDS | 709.48 | LBS/HR | 291.09 lbs of the total 893.50 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| C6 (not including benzene) | 355.62 | POUNDS | 709.48 | LBS/HR | 114.48 lbs of the total 355.62 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| C7s | 436.44 | POUNDS | 709.48 | LBS/HR | 140.49 lbs of the total 436.44 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Carbon Monoxide | 46319.1 | POUNDS | 6627.58 | LBS/HR | 7399.11 lbs of the total 46319.10 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Cis-2-butene | 317.21 | POUNDS | 709.48 | LBS/HR | 73.60 lbs of the total 317.21 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Ethylene | 10924.81 | POUNDS | 709.48 | LBS/HR | 3887.94 lbs of the total 10924.81 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Isobutane | 599.7 | POUNDS | 709.48 | LBS/HR | 131.85 lbs of the total 599.70 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Isobutene | 2098.63 | POUNDS | 709.48 | LBS/HR | 433.82 lbs of the total 2098.63 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Nitrogen Oxides | 8125.04 | POUNDS | 1630.75 | LBS/HR | 2785.08 lbs of the total 8125.04 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Propane | 1664.71 | POUNDS | 709.48 | LBS/HR | 516.47 lbs of the total 1664.71 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Propylene (Propene) | 17024.22 | POUNDS | 709.48 | LBS/HR | 4750.77 lbs of the total 17024.22 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Trans-2-butene | 714.61 | POUNDS | 709.48 | LBS/HR | 152.32 lbs of the total 714.61 lbs are authorized under Permit #3452/PSD-TX-302M2/PAL6. | ||
| Cause of Emission Event or Excess Opacity Event, or Reason for Scheduled Activity: |
|---|
| Loss of utilities including, but not limited to, third-party nitrogen supply, third-party natural gas supply, and steam due to severe inclement weather causing the shutdown, idling, and/or transitioning to alternative operating conditions of multiple process units and safe utilization of the flare system. |
| Actions Taken, or Being Taken, to Minimize Emissions And/or Correct the Situation: |
| Operational adjustments were made and affected units were shut down, idled, or transitioned to other alternative operating conditions as safely as possible to minimize emissions. Ambient air quality monitoring performed by ExxonMobil indicates no adverse impact to the site and the surrounding community. |
| Basis Used to Determine Quantities and Any Additional Information Necessary to Evaluate the Event: |
| Portions of the unit emissions are authorized by Permit# 3452/PSD-TX-302M2/PAL6 and Permit# 102982. Emissions are based on process and engineering knowledge, analyzer data, flow meters, historical data, and/or AP-42 emission factors. Total emissions in the “Est. Quantity” column is the sum of authorized and unauthorized emissions. This event has ended. |
| Initial Notification Date/Time: | 02/16/2021 12:14 AM | Method: | STEERS |
|---|---|---|---|
| Notification Jurisdictions: | REGION 12 - HOUSTON | ||
| Publication Status: | VERIFIED BY A CUSTOMER | ||
Back to top