MAE is providing QA/QC services for the Trail Ridge Landfill Construction, Phase 6, Class I Cell Expansion.  The project includes over 300 acres of site grading and clearing; construction/installation of drainage system including 20,000 linear feet of drainage canals and excavation of 56 acres of stormwater ponds; construction of 15,000 linear feet of roadway; demolition of existing facilities and structures; and construction of approximately 31 acres of a Class I municipal solid waste cell including subgrade, screened sand subbase, geosynthetic clay liner, secondary geomembrane liner, primary geomembrane liner, in-cell piping, geocomposites, geotextiles, and pipe penetration.