By Nathan Risser | Bloomberg

A fire Monday at Valero’s Benicia refinery leaves only one gasoline plant still operating in the San Francisco Bay Area, putting pressure on prices ahead of peak driving season and stymieing Governor Gavin Newsom’s efforts to offer relief to Californians .

Chevron’s Richmond refinery currently is the only plant in Northern California able to make up the fuel shortage after Phillips 66 and Marathon Petroleum converted their operations to renewable fuels — diesel and jet, but not gasoline — in recent years.

RELATED: Is Gavin Newsom changing his tune with the oil industry?

The premium for California gasoline, known as Carbob, compared to Nymex futures jumped 10 cents Tuesday in the Bay Area and in Los Angeles, according to data from General Index. On Wed

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