Technical Addendum to the Community Assessment for the 2028 Comprehensive Plan Columbus Consolidated Government November 2007 In partnership with and i This page was intentionally left blank for two-sided printing. ii Technical Addendum November 2007 Table of Contents I: Supporting Analysis of Data and Information 1 Introduction ................................................................................................................... 1 2 Population ...................................................................................................................... 2 2.1 Total Population ............................................................................................................................................. 2 2.2 Age Distribution ........................................................................................................................................... 10 2.3 Race & Ethnicity ........................................................................................................................................... 12 2.4 Living Arrangements .................................................................................................................................... 13 2.5 Income ............................................................................................................................................................ 13 3 Economic Development .............................................................................................. 17 3.1 Economic Base .............................................................................................................................................. 17 3.2 Population & Labor Force .......................................................................................................................... 24 3.3 Economic Resources .................................................................................................................................... 29 3.4 Economic Trends ......................................................................................................................................... 39 4 Housing ........................................................................................................................ 46 4.1 Introduction ................................................................................................................................................... 46 4.2 Housing Types and Mix ............................................................................................................................... 46 4.3 Condition and Occupancy ........................................................................................................................... 48 4.4 Cost of Housing ............................................................................................................................................ 53 4.5 Cost-Burdened Households ........................................................................................................................ 55 4.6 Projected Population and Housing Need ................................................................................................. 59 4.7 Special Housing Needs ................................................................................................................................ 61 4.8 Jobs-Housing Balance .................................................................................................................................. 64 5 Natural and Cultural Resources .................................................................................. 69 5.1 Wetlands ......................................................................................................................................................... 69 5.2 Groundwater Recharge Areas ..................................................................................................................... 69 5.3 Water Supply Watersheds, Water Sources, and Water Quality ............................................................. 70 5.4 Steep Slopes ................................................................................................................................................... 75 5.5 Floodplains ..................................................................................................................................................... 75 5.6 Soils and Prime Agricultural Land ............................................................................................................. 76 5.7 Plant and Animal Habitats........................................................................................................................... 76 5.8 Greenspace ..................................................................................................................................................... 81 6 Community Facilities ................................................................................................. 106 6.1 Introduction ................................................................................................................................................. 106 6.2 Water Supply and Treatment .................................................................................................................... 106 6.3 Wastewater Treatment ............................................................................................................................... 108 6.4 Fire and Emergency Medical Services ..................................................................................................... 109 6.5 Public Safety................................................................................................................................................. 111 6.6 Parks and Recreation .................................................................................................................................. 114 6.7 Stormwater Management ........................................................................................................................... 120 6.8 Solid Waste Management........................................................................................................................... 122 6.9 Education ..................................................................................................................................................... 123 6.10 Hospitals and Other Public Health Facilities ......................................................................................... 129 6.11 Libraries ........................................................................................................................................................ 130 6.12 General Government Facilities ................................................................................................................. 132 6.13 Other Services ............................................................................................................................................. 133 6.14 Consistency with Service Delivery Strategy ............................................................................................ 134 ii Technical Addendum November 2007 7 Intergovernmental Coordination ............................................................................... 135 7.1 Purpose ......................................................................................................................................................... 135 7.2 Coordination Partners ................................................................................................................................ 135 7.3 Existing Policy and Activities .................................................................................................................... 136 8 Transportation ........................................................................................................... 138 8.1 Streets, Roads and Highways .................................................................................................................... 138 8.2 Alternative Modes ....................................................................................................................................... 142 8.3 Parking Conditions ..................................................................................................................................... 144 8.4 Railroads, Trucking, Port Facilities, and Airports.................................................................................. 144 8.5 Planned Transportation Improvements .................................................................................................. 145 8.6 Transportation and Land Use Interaction .............................................................................................. 147 II. Atlas of Supportive Maps Map 1-1: Planning Areas Map 5-1: Wetlands Map 5-2: Groundwater Recharge Areas Map 5-3: Watersheds Map 5-4: Steep Slopes Map 5-5: Hydrology Map 5-6: Prime Farmland Map 5-7: Greenspace Map 5-8: Cultural Resources Map 6-1: Community and Educational Facilities Map 6-2: Water Service Area Map 6-3: Sewer Service Area Map 8-1: Transportation Network Map 8-2: Roadway Classification Map 8-3: Deficient Bridges Map 8-4: Public Transportation Facilities Map 8-5: Bicycle and Pedestrian Facilities Map 8-6: Transportation Improvement Projects Map 8-7: Long Range Transportation Improvement Projects Map 8-8: Transportation Level of Service III.