Book 4, Title 0, Sec. 40The Secretary or the head of an agency shall have authority over and responsibility for its operation. He shall delegate such authori

Delegation of Authority. - The Secretary or the head of an agency shall have authority over and responsibility for its operation. He shall delegate such authority to the bureau and regional directors as may be necessary for them to implement plans and programs adequately. Delegated authority shall be to the extent necessary for economical, efficient and effective implementation of national and local programs in accordance with policies and standards developed by each department or agency with the participation of the regional directors. The delegation shall be in writing; shall indicate to which officer or class of officers or employees the delegation is made; and shall vest sufficient authority to enable the delegate to discharge his assigned responsibility.