Authorizing the execution of Amendment No. 1 to the Professional Services Agreement with David Evans and Associates (No. 2250063) in the amount of $787,971.75, plus all applicable taxes, for a total contract amount of $2,157,516.50 for the advancement of design from 60 percent to complete final design and other engineering work necessary to complete the bid packages for the 150th Avenue SE Project (CIP Plan No. PW-R-212) and the Neighborhood Congestion Management Levy Program (CIP Plan No. PW-R-198)