Juan has been providing demolition support services for projects for over six years. In that time, he has been responsible for the preparation of structural demolition plans and calculations as well as the development of complex 3D models and demolition sequences. Juan regularly visits demolition sites to perform pre and post condition surveys and to provide on-site demolition support. As part of his active demolition engineering tasks, Juan has been involved in the post inspection of all felled and surrounding structures for stability and condition determination purposes. Sigma has developed a thorough and complete documentation process for the monitoring and post implosion condition evaluation of surrounding structures. This process has been used to record the existing structural condition of surrounding structures for both pre and post implosion comparison and validation and has been quite useful in providing appropriate condition documentation for both the demolition and implosion contractors on all major demolition support services for projects.