Specifications include, but are not limited to: Phase 1, Parts A & B: Part A shall consist of capturing high-resolution street-level imagery with LIDAR data driven within the Harris County boundary. Part B (optional) may be driven on HCTRA toll roads in adjacent counties. Phase 2, Parts A & B: Following concatenation of the photographic and LIDAR data, applicable structural feature(s) on each residence or building shall be evaluated to best select and extract the elevation at which rising water could potentially enter the structure (e.g. threshold of front door). Part A structures are located within the Harris County boundary. Part B (optional) structures are outside of the Harris County boundary but within the City of Houston.