Gas prices down 2.2 cents

  Washington gas prices have fallen 2.2 cents per gallon in the past week, averaging $3.81/g as of Aug. 30, according to GasBuddy’s daily survey of 2,666 stations in Washington.   Gas prices in Washington are 5.5 cents per gallon higher than a month ago and stand $1.04/g higher than a year ago.   According to GasBuddy price…