Planned and managed the procurement, permit acquisition, design and construction of the over $80 million Cedar Hills Area 4 phased Closure. This was the first structured and permitted phased landfill closure in King County that employed a new strategy of not closing the top deck, and enabled the agency to optimize capacity and extend the life of the landfill. Project tasks included – alternate cover capping systems, leachate management system modifications, evaluation of closure/post-closure plans from a constructability and cost-effectiveness perspective, performance of a field test pit program to determine the waste boundary and thickness of the existing intermediate cover, oversight over the construction management consultant team.