The use of an existing platform may be continued or such use may be changed, enlarged or extended in accordance with the use regulations of the applicable district.

The use of an existing pier may be continued or such use may be changed, enlarged or extended in accordance with the use regulations of the applicable district provided that any use within a building or other structure on the pier meets one of the following requirements:

(a)        such use is a WD use; or

(b)        the building or other structure within which such use is located existed on October 25, 1993; or

(c)        the building or other structure within which such use is located complies with the height and setback regulations of Section 62-342 (Developments on piers).

In addition, the following use regulations shall apply on piers:

(d)        uses listed under Use Group VI, not otherwise limited in size by their Use Group listing, shall be limited to 20,000 square feet of floor area per establishment; and

(e)        no residential use shall be permitted within a building on a pier unless 50 percent or more of the floor area of the story at the level of public access is allocated for occupancy by WE uses, subject to the size limitations set forth in paragraph (d) of this Section.

Any use on an existing pier not permitted by the foregoing provisions of this Section shall only be allowed by special permit of the City Planning Commission pursuant to Section 62-835 (Developments on piers or platforms).