HOUSTON, March 9 (Reuters) - Shell is conducting plannedmaintenance at its 145,000 barrel-per-day Puget Sound refineryin Washington state, a company spokesperson confirmed onWednesday.
The spokesperson would not disclose the length of themaintenance or which units were impacted.
West Coast gasoline prices firmed on Wednesday even afterthe Energy Information Administration (EIA) reported regionalgasoline inventories rose by 200,000 barrels last week.
In Los Angeles, prompt CARBOB rose by 6.5 cents to trade atan 8.5-cent a gallon premium to the April NYMEX RBOB contract.Earlier in the week, was at roughly a 3-cent a gallon discountto the futures market. (Reporting by Liz Hampton)