In the case of vacancy or change, if a county fails to comply with any portion of chapter 136-12 WAC, the matter will be considered at the next regular meeting of the county road administration board. The county road administration board may take any action regarding county forces construction, the county's motor vehicle fuel tax distribution, county arterial preservation program eligibility or rural arterial program eligibility it deems appropriate: Provided however, that it may continue to grant reasonable extensions in the event the affected county can give adequate proof or demonstrate at the next regularly scheduled board meeting that a diligent effort has been made to secure the services of a qualified professional civil engineer.