Flare

BAAQMD Refinery Flare Emission Report
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Marathon / Tesoro - Main Refinery
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July - 2026
Date Vent Gas Flow Methane NMHC Sulfur Dioxide
(mo/day/yr) (volume in SCFD) See note **** (lbs) (lbs) (lbs)
7/1/2026 0.00 73.10 0.00 0.00
7/2/2026 0.00 73.10 0.00 0.00
7/3/2026 0.00 73.00 0.00 0.00
7/4/2026 0.00 72.98 0.00 0.00
7/5/2026 0.00 72.98 0.00 0.00
7/6/2026 0.00 72.78 0.00 0.00
7/7/2026 0.00 72.71 0.00 0.00
7/8/2026 0.00 72.51 0.00 0.00
7/9/2026 0.00 72.55 0.00 0.00
7/10/2026 0.00 72.94 0.00 0.00
7/11/2026 0.00 72.95 0.00 0.00
7/12/2026 0.00 72.98 0.00 0.00
7/13/2026 0.00 73.24 0.00 0.00
7/14/2026 0.00 73.37 0.00 0.00
7/15/2026 0.00 73.36 0.00 0.00
7/16/2026 0.00 73.42 0.00 0.00
7/17/2026 0.00 73.39 0.00 0.00
7/18/2026 501,351.54 141.68 6.46 1.40
7/19/2026 178,416.95 95.89 3.24 0.54
7/20/2026 602,851.63 190.20 19.62 1.79
7/21/2026 0.00 73.25 0.00 0.00
7/22/2026 0.00 73.44 0.00 0.00
7/23/2026 0.00 73.04 0.00 0.00
7/24/2026 0.00 73.05 0.00 0.00
7/25/2026 0.00 73.16 0.00 0.00
7/26/2026 0.00 73.12 0.00 0.00
7/27/2026 0.00 73.17 0.00 0.00
7/28/2026 0.00 73.03 0.00 0.00
7/29/2026 0.00 72.95 0.00 0.00
7/30/2026 0.00 72.83 0.00 0.00
7/31/2026 0.00 72.87 0.00 0.00
July Totals 1,282,620.12 2,473.04 29.32 3.73
  • * The Refinery Main Flare System consists of four flares (East Air Flare, West Air Flare, Coker Flare and Emergency Flare) in a cascaded formation.
    The data shown is a summary of flow and emissions from all four flares.
    ** Natural gas is used for pilot gas at all flares. The pilot gas flows are based on the design gas flow from the manufacturer.
    ***Natural gas is used for purge gas, except at the Emergency flare which uses nitrogen. Purge flows are based on design flows,
    with the exception of the Coker flare which has flow meter to measure NG to the pilots and purges.
    **** Vent Gas Flow is vent gas to air flares and DCU flare instead of sum of flare header flows
Marathon / Tesoro Main Refinery Flare Report 7/1/2026 - 7/31/2026
 
 

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Last Updated: 4/13/2023