The document provides a proposal for front end engineering design (FEED) for additional works at the Chevron Thailand Aviation Base construction project located at Nakorn Sri Thammarat Airport in Thailand. It includes the scope of work, site layout plan, site photos, perspective drawings, budget, and schedule. The scope of work involves designing additional office, workshop, and meeting room space, reconfiguring existing rooms, and adding amenities like shelters, fencing, and signage. The budget is separated into items that can start immediately and those requiring permits. Perspective drawings and photos show proposed changes.