Sealed proposals will be received by the Madison County Airport Authority, "Owner", at the Office of the Airport Manager, Madison County Airport, 1281 US Rt. 40 SW, London, OH 43140, until 12:30 p.m. (local time), on the 17th day of March, 2021 and then will be publicly opened and read aloud at the Madison County Airport. Any bids received later than 12:30 p.m. will be returned unopened.