The compilation of existing information, base materials and available data used in the design process. Typical information may include property line boundaries, locations of adjacent roadways and access points, elevation topography and aerial photographs. For illustrative purposes this information can be obtained from County Tax Maps, United States Geological Survey (USGS) maps and County Land Records; for accuracy, permitting and construction a survey firm can perform precise documentation of the property line boundary and develop elevation topography using aerial photography or field data. CDS will coordinate with the surveyor and modify the provided information as required to create a base plan.