Chapter 36.80 RCW, requires that the County Engineer be a registered and licensed professional civil engineer under the laws of the State of Washington, and charges the County Engineer with the responsibility to prepare standards of construction for roads and bridges. In the event that standards change to the degree that it becomes necessary to amend the adopted standards contained in PCC 17B.10.060, the County Engineer shall prepare and submit such recommendations for amendment to the County Council for their review and adoption in accordance with RCW 36.86.030.