The construction documents indicate that the project involves mechanical and electrical improvements at the West Des Moines Public Library and Public Safety Station 22. Mechanical System Upgrades at the West Des Moines Public Library include the removal and replacement of air handling units (AHUs), ductwork, and piping. New work includes the installation of a Dedicated Outdoor Air System (DOAS) and one (1) new AHU. The new HVAC equipment will be reconnected to existing building systems and will then be tested, balanced, and commissioned. Electrical system modifications will include the relocation of an electrical panel, rerouting of circuits, and the connection of new mechanical equipment to power and control systems. Key components being installed at Public Safety Station 22 include new rooftopmounted energy recovery equipment, new ductwork, and new electrical connections as needed.