The landholding agency remains responsible and accountable for excess and surplus real property, including related personal property, and must perform the protection and maintenance of such property pending transfer to another Federal agency or disposal. Guidelines for protection and maintenance of excess and surplus real property are in the GSA Customer Guide to Real Property Disposal. The landholding agency is responsible for complying with the requirements of the National Oil and Hazardous Substances Pollution Contingency Plan and initiating or cooperating with others in the actions prescribed for the prevention, containment, or remedy of hazardous conditions.