Task 1 Aerial Photography All mapping performed shall meet accuracy requirements as stated in the Minimum Standards for Surveying in New Mexico and shall be done under the direct supervision of an ASPRS certified photogrammetrist. Any control or topographic mapping provided in support of photogrammetry shall be done under the direct supervision of a professional surveyor licensed in NM. The Contractor shall be responsible for the acquisition of controlled or un-controlled aerial photography or lidar aerial mapping (Light Detection and Ranging) as specified for the development of engineering\construction drawings. Aerial acquisition shall be by means of conventional aerial film type camera(s) or digital aerial sensor type camera (s). Nominal Photo Scale: 1:3000 scanned at 12.0 to 12.5 micron. Digital Sensor Ground Sample Distance of approximately 5cm (0.16ft). All imagery shall be free of any defects which, in the opinion of the NMDOT, render it unsuitable for its intended purpose. Paneling and mapping are to start 1000’ before B.O.P. and end 1000’ beyond E.O.P. Three panels should appear at the beginning and end models of each Flight Line in a line consisting of a center point and two wing points. When laying out panel locations plan for at least one field surveyed ground control panel point to appear in each model. This layout will also serve for the smaller footprint of a digital aerial camera. Imagery should be collected under optimal conditions regarding season, wind, weather and time of day. (Sun angle above the horizon). Aerial Imagery deliveries should be digital imagery conforming to a Ground Sample Distance approximately 5cm (0.16ft). All film and digital imagery are property of NMDOT and must be part of the deliverables.
