The principal amount of a loan directly made or guaranteed under subsection (a) for a medical facilities project, when added to any other assistance provided such project under part B, may not exceed 90 per centum of the cost of such project unless the project is located in an area determined by the Secretary to be an urban or rural poverty area, in which case the principal amount, when added to other assistance under part B, may cover up to 100 per centum of such costs.
The cumulative total of the principal of the loans outstanding at any time with respect to which guarantees have been issued, or which have been directly made, may not exceed such limitations as may be specified in appropriation Acts.