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Air district investigating reports of strong odor in Benicia and Martinez

  • On Monday, Bay Area Air Quality inspectors launched an odor investigation after complaints from residents in Martinez and Benicia, while communicating with Martinez Refining Company to identify corrective actions.
  • Martinez Refining Company said an internal electrical issue at 10:53 a.m. Monday affected operations and led to flaring as part of engineered safety systems, according to statements.
  • Contra Costa Health issued a Level 1 alert and launched its Hazardous Materials Program for air monitoring, which did not detect results that posed a risk to public health or required further action.
  • CCH requested a 72-hour report from MRC and said it will investigate the root cause and identify corrective actions, while officials urged residents to follow local health officials' guidance.
  • Regional refinery coordination expanded as the air district communicated with Valero while Martinez Refining Company’s past five years include a $4.5 million wastewater fine and fire in Feb. 2025.
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NBC Bay Area broke the news in San Francisco, United States on Monday, January 26, 2026.
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