Beginning in 2011, Sustainable Infrastructure Assessments (SIA’s) are being conducted across the United States Air Force Enterprise at installations in Colorado and worldwide. SIA’s consist of six types of assessments or audits for Air Force facilities: 1) Real Property Inventory, 2) Space Utilization to ensure facilities are optimized and properly configured for efficient operations, 3) Energy and Water conservation opportunities, 4) High Performance Sustainable Building (HPSB) audits identifying requirements to elevate the level of building performance 5) Facility Condition assessments (FCA’s) to determine sustainment, restoration, and modernization requirements, 6) Real Property Installed Equipment Inventory to determine maintenance and replacement requirements of mechanical, electrical, and plumbing equipment.