Ellis Library - West Stacks Renovation (CP242781) Renovate and upgrade environmental controls and security in the West Stacks of Ellis Library to meet the needs of special, rare, and archival collections. The renovation would include construction of an inner set of walls (plenum) to envelop the collections within existing exterior walls; installation of new heating, cooling, and humidity control equipment; installation of cameras and alarms to enhance security. Base Estimate & Alternates: $1,427,500.00