Description: From the Story County Land Development Regulations, Chapter 3, the districts as defined on the Official Zoning Map include: A. In order to carry out the purpose and intent of this Ordinance, the unincorporated area of Story County, Iowa, is hereby divided into the following base district classifications: A-1 Agricultural District A-2 Agribusiness District A-R Agricultural/Residential District R-1 Residential District R-2 Urban Residential District RMH Residential Manufactured Housing District C-LI Commercial / Light Industrial HI Heavy Industrial GB/C Greenbelt/Conservation District B. In addition to the base districts identified above, the following overlay districts are established. R-M Residential/Mixed-Use (Overlay) District R-C Residential/Conservation Design (Overlay) District