The Oskaloosa City Council will vote Monday night (4/1) on approving plans and contracts for the third phase of its sanitary sewer system improvements project.  The estimated $3.7 million project would rebuild sewer pipes and manholes.  The Council will also discuss ending the City’s annual spring cleanup program.  City Manager Michael Schrock Junior has recommended discontinuing the spring cleanup, noting that Mahaska County has cancelled its cleanup program.  Monday night’s Oskaloosa City Council meeting starts at 6 at City Hall.