Specifications include, but are not limited to: The project consists of construction of a 12.3-acre soil cover system to overlie portions of the Phase 3 landfill cell which has reached its final elevations. The City of Billings, Montana currently disposes its solid waste at the City of Billings Regional Landfill located south of the City on Jellison Road. Construction elements include a 4-foot thick final cover system, comprised of a 3.5-foot thick native soil layer and 0.5-foot thick native topsoil layer augmented with onsite compost. Some portions of the project include installing permanent erosion control under the drainage ditches. Other work includes seeding, non-woven geotextile, drainage improvements, and erosion control.