Sullivan has a senior scientists, engineers and technical personnel that support four multi-disciplinary service areas. These are the Mission Services, Environmental Services, Remediation & Construction and Environmental Technology. They provide services which include site assessments, habitat surveys, and RCRA/CERCLA remedial action and investigations, radiological surveys and decontamination, construction services with an emphasis in security and disaster preparedness. They also provide GIS services, energy services, advanced database development, robotics and specialty programming services for the defense and aerospace industry, routinely supporting secret and top secret clearance required projects.