BOONE COUNTY (MISSOURIAN) -Â The contractor designing and building the new Columbia Regional Airport terminal should be ready to begin site work on the project in May or June and actual construction of the terminal in late summer, the Columbia City Council learned during a Monday night work session. Mitchell Fuemmeler, senior project manager for Nabholz Construction, briefed the council on the floor plan and materials the company intends to use for the $26.6 million terminal. The interior design features an open floor plan, a color scheme of blues and grays with wood-like accents and polished concrete floors with a river pattern.