HUD Memo: Application of §51.104 to Land Use Conversions
This memorandum clarifies existing policy on rehabilitation of existing buildings that changes the original land use. New land uses resulting from rehabilitation may be considered new noise-sensitive uses as if they were new construction. If those new uses are in Unacceptably noise-exposed areas (external noise greater than 75 decibels), an Environmental Impact Statement is required. For more information, contact your Field or Regional Environmental Officer.