For uses denoted with an “S” in Section 32-141 (Use Group IV – general use allowances), the following provisions shall apply:

1. Electric or gas utility substations in C1 or C2 Districts, or C4 through C8 Districts, are limited to a site of not more than 10,000 square feet. However, electric utility substations on a site in excess of 10,000 square feet may be permitted by special permit of the Board of Standards and Appeals, in accordance with Section 73-143 (Electric or gas utility substations) or by special permit of the City Planning Commission, in accordance with Section 74-142 (Electric utility substations).
2. The following capacity limitations shall apply to docks:
   1. In C1 through C3 Districts, docks for ferries shall be limited to an aggregate operational passenger load, per zoning lot, of 150 passengers per half hour except that such limitation on operational passenger load may be modified by authorization by the City Planning Commission in accordance with Section 62-821 (Modification of requirements for ferries and sightseeing, excursion or sport fishing vessels). In C4 through C8 Districts, docks for ferries shall be permitted without restriction on passenger load.
   2. Docks for water taxis shall be limited to a vessel capacity up to 99 passengers.
   3. Docks for sightseeing, excursion or sport fishing vessels shall be limited to the following aggregate dock capacities per zoning lot, whereby “dock capacity” is the U.S. Coast Guard-certified capacity of the largest vessel using a dock and “aggregate dock capacity” is the sum of the dock capacities of all docks on the zoning lot:
      1. 200 in C1, C2 and C3 Districts; 
      2. 500 in C4-1, C4-2, C4-3, C4-4, C8-1, C8-2 and C8-3 Districts; and
      3. 2,500 in C4-4A, C4-5, C4-6, C4-7, C5, C6, C7 and C8-4 Districts.
3. In all Commercial Districts, recycling, or organic material, receiving, shall be limited to 5,000 square feet per establishment.