Source provides environmental consulting and permitting services to clients for the design, construction and operation of hazardous waste storage and disposal facilities. During the 1980's Source was actively involved in the preparation of RCRA Part A and B hazardous waste permits for facilities with above-ground tanks and drum storage areas. Now that most existing facilities have their permit applications filed, Source concentrates its hazardous waste services on preparing permit amendments and hazardous waste site closure plans. Source also has exceptional qualifications and experience in performing air quality services for hazardous waste facilities. This includes air emission calculations, control technology analyses, atmospheric dispersion modeling, air quality impact analyses and expert testimony. Source is often used by other engineering and consulting firms to prepare the air quality portions of their hazardous waste permit applications.