At their regular meeting last night, the Clearlake City Council approved contracts for the 18th Avenue Improvemnt Project, voting unanimously to award Argonaut Constructors the contract for just over $4.6 million, as well as proving Argonaut for the Dam Road Extneion/South Center Dive Improvement Project for just under $990,000. In other business, the council approved selling a vacant, city-owned lot at 16178 35th Ave. to an adjacent property owner for just under $7,000.