Average gasoline prices in the South Sound have fallen nearly 10 cents in the last week and more than three cents since Monday.
That sharp decline continues the trend that began in the third week of May when prices here briefly topped $4 a gallon. Average prices, The News Tribune’s Gas Deal Finder reports, have dropped 33 cents a gallon in about three weeks.
That average Tuesday morning was $3.69 a gallon in the Tacoma area.
Price leaders were two Arco stations, one at North 11th and Pearl streets and the other at 11908 Pacific Ave., …