In Special Enhanced Commercial Districts 2 and 3, the regulations of Article V, Chapter 2, shall be modified, as follows:

(a)        For the purposes of this Chapter, non-conforming uses shall include ground floor level uses exceeding the applicable maximum street wall widths set forth in Section 132-24.

(b)        Any ground floor level use with a non-conforming street wall width may be continued or changed to another use permitted by the applicable district regulations, provided that such change of use does not create a new non-conformance or increase the degree of non-conformance with regard to the permitted street wall width of such proposed use. The discontinuance provisions of Section 52-60 shall not apply to such change of use within establishments with non-conforming street wall widths.