MONROE - Although New Glarus will soon open a branch of Midwestern convenience store chain Casey's General Stores, Monroe missed its chance to open one. Bill Walljasper, chief financial officer of Casey's General Stores Inc., said the company had attempted to purchase land on the west side of Monroe near Shopko several months ago. However, Walljasper said, the plan was aborted because of what he referred to as "marshland issues" - the land was not ideal for building on.