For all developments or enlargements on the lowest story of a building on primary transit-adjacent sites, a determination, or certification, where applicable, for a transit volume shall be obtained pursuant to Section 66-21 (Determination and Certification for Transit Volumes). Where a transit volume is needed, special use, bulk, parking, and streetscape regulations are set forth in Sections 66-22 (Special Use Regulations), 66-23 (Special Bulk Regulations), 66-24 (Special Regulations for Accessory Off-street Parking), and 66-25 (Special Streetscape Regulations) respectively. Separate applicability is set forth within such Sections for primary transit-adjacent sites with easement volumes and for those with clear paths.