256.3. No permit authorizing a cadastral operation may be refused on the sole ground that the area or the dimensions of the tract of land do not allow it to satisfy the pertinent requirements of an interim control by-law or of a subdivision by-law in respect of a tract of land that is the remainder of a tract of land(1) part of which has been acquired for purposes of public utility by a public body or some other person having powers of expropriation, and
(2) which immediately before the acquisition had sufficient area and dimensions to conform with the by-laws in force at that time or could have been the subject of a cadastral operation pursuant to section 256.1 or 256.2.
To be authorized, the cadastral operation must result in the creation of a single lot or, where the tract of land is comprised in several original lots, of a single lot for each original lot.