The floor area of all nonconforming uses can be enlarged by up to 25% of the floor area as it existed at the time amendment by L.L. No. 11-2009 became effective, provided such expansion does not result in or increase any nonconformity of the building related to bulk, if applicable, and if a permit for expansion of the nonconforming use is granted by the Zoning Board of Appeals, following a public hearing, and if the Zoning Board finds that the expansion will comply with the general criteria set forth for special use permits, § 123-46C, and will further comply with the area and bulk requirements of § 123-23 and the parking and loading requirements of § 123-26.