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Portal 4 Improvements <br /> Surveying Services Scope of Work <br /> may be drawn at elevation 0.0, so long as the supporting point plot data indicates the surveyed <br /> elevation. <br /> 1. Base mapping shall be provided and include a survey point file in electronic ASCII format, <br /> comma delineated with all data points (PNEZD),field code/description) used to develop the <br /> mapping. <br /> 2. CTB file(s) used to create full-size and half-size plots of the topo/base map. <br /> C. Provide two electronic drawing(.dwg)files with surveyor's sign and seal that contain the following: <br /> 1. 2D basemap containing all 2D elements including ROW calculations that will be flattened to <br /> zero elevation. <br /> 2. 3D surface DTM containing all breaklines and points to create site contours at 1' intervals. <br /> 5 <br />