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About Air Quality

Refinery Flare Monitoring

About Air Quality
  1. Air District
  2. About Air Quality
  3. Research & Data
  4. Refinery Flare Monitoring

View data summarizing monthly flaring activity at Bay Area Refineries.

The refinery flare monitoring data on this webpage is derived from reports submitted by each refinery to the Air District on a monthly basis.

These reports are submitted 30 days after the end of each month and include monitoring data for each flare that is subject to the requirements set down in the Air District’s Regulation 12, Rule 11. Reports undergo processing and quality assurance and may take an additional 60-90 days after the required submittal date to appear on the website.

Flare data from previous years is available through a Public Records request.

Notes on graphs 

  • For each flare, a separate graph is generated from the monitoring data for each pollutant reported: methane, non-methane hydrocarbons, and sulfur dioxide.
  • Pollutant emissions are estimated based on calculations from direct vent gas flow measurement and do not represent a direct measurement of actual emissions. For each day of the month, each graph plots measured vent gas flow volume (in standard cubic feet) to the flare on the left "Y" axis, and the estimated pollutant emissions (in pounds per day) on the right "Y" axis.
  • The “Y” axis ranges of vent gas flow volume and emissions vary for each individual graph.
Flare Refinery Archives
Year:
2024 2023 2022 2021 2020 2019 2018 2017
Alky-Poly JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
D&R JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Fluidized Catcracker JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Hydrogen H2 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Low Sulfur Fuel Oil JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
North Isomax JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Richmond Lube Oil Project JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
South Isomax JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Main JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
MP 30 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Clean Fuels Area JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Light Oil Products JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Ops. Central JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Ops. Central Flexigas JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
50 Crude Unit JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Ammonia Plant JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Main Refinery JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Acid Gas JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
North JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
South JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

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Last Updated: 9/9/2016