Remote aerial survey and tree survey for Translink

Translink, Northern Ireland are seeking a suitably qualified Economic Operator to complete an aerial survey of the rail network, overlaid with the precise location of tree hazards, lineside vegetation and leaf fall assessment across the entire NI Railways network. The key project objectives are: Full aerial survey of the entire NIR network utilising both imagery and Lidar. Hazardous trees are to be identified and recorded in detail, and to include trees on Translink property and third party trees which could impinge the railway line. A suitable arboricultural model should be used to determine this risk. An experienced and suitably qualified arboricultural expert shall be required to complete verification of the aerial survey by examining some sample sites visually. The volume should be such that gives the contractor assurance of the output to date. Leaf fall assessment, effecting low adhesion to the track, to be assessed on the entire network.