From the Document: "The President today declared an emergency exists in the State of Alabama and ordered Federal aid to supplement State and local response efforts to assist evacuees from the area struck by Hurricane Katrina and to provide emergency assistance to those areas beginning on August 29, 2005, and continuing. The President's action makes Federal funding available to the State and all 67 counties of the State of Alabama. Specifically, assistance is available to State and eligible local governments for emergency protective measures that are undertaken to save lives and protect public health and safety. Emergency protective measures, including direct Federal assistance, will be provided at 100 percent Federal funding."
White House: http://www.whitehouse.gov