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Plans from plans and address Division/Surveying and <br /> sources Mapping <br /> Census Data Download from Census Community Development Recommended <br /> Bureau <br /> City Limits Acquire from Ordinance Property Appraiser - GIS Existing <br /> M Information and Mapping <br /> County- owned Extract from Tax Records Property Appraiser Recommended <br /> Property <br /> County Limits Acquire from Ordinance Property Appraiser - GIS Existing <br /> Information and Mapping <br /> Control Points GPS field work; convert from Engineering <br /> ( Horizontal and Division /Surveying and Recommended <br /> Vertical CAD Mapping <br /> Digitize from base map Community <br /> Easements data ; aggregate layers as Recommended <br /> needed Development/ Planning <br /> Digitize on screen ; <br /> Facilities aggregate layers as Property Appraiser Existing <br /> needed <br /> Digitize polygons from aerial <br /> Land Use photographs and existing Emergency Services or Existing <br /> maps; existingCAD data Planning <br /> Parcels Acquired from tax records; Property Appraiser - GIS Existing <br /> Cogo and Mapping <br /> Digitize from base map Engineering <br /> Parks data ; aggregate layers as Division/Surveying and Recommended <br /> needed Mapping <br /> Extract , cleanse , geocode <br /> Permitting and map from Access Automated Recommended <br /> database <br /> Digitize from base map <br /> Proposed data ; acquire from Community Recommended <br /> Subdivisions developers submittin Development/ Planning <br /> Digitize from base map <br /> data ; aerial photography ; Engineering Division/ Land <br /> Right- of-way aggregate layers as Acquisition Recommended <br /> needed <br /> Digitize from base map Engineering <br /> Schools data ; GPS field work Division /Surveying and Recommended <br /> Mapping <br /> GPS field work; aggregate Engineering <br /> Signs layers as needed Division /Surveying and Recommended <br /> Mapping <br /> Street Centerlines Derived from aerial GIS Director Existing <br /> " photography; GPS field work <br /> Striping & Pavement GPS field work; derive from Engineering <br /> Markings aerial photography; Division/Surveying and Recommended <br /> W aggregate la ers Mapping <br /> 174 <br /> GIS Needs Assessment and Implementation Plan Chapter 1 — Departmental GIS Needs Assessment <br />