The Department of Energy (Department) is responsible for the world's largest environmental remediation program resulting from the legacy of this Nation's nuclear weapons program and government-sponsored nuclear energy research activities. About $6 billion, or one-third of the Department's annual budget, is devoted to this critical mission component. To support its mission, the Department's Office of Environmental Management (EM) developed a corporate-level project management system known as the Integrated Planning, Accountability, and Budgeting System - Information System (IPABS-IS). This system, coupled with the EM Corporate Database, was to provide a centralized means to collect, store, and report program information. Through the end of Fiscal Year (FY) 2000, EM had spent about $6 million for development and operation of the system.