Cross access connections shall be required for:

(a)        developments where at least 70 percent or more of the floor area on the zoning lot is occupied by a commercial or community facility use with an open parking lot that has 36 or more accessory parking spaces or is greater than 12,000 square feet in area;

(b)        enlargements on a zoning lot with an open parking lot that has 36 or more accessory parking spaces or is greater than 12,000 square feet in area; or

(c)        zoning lots where the number of parking spaces accessory to commercial or community facility uses is increased and such increase results in at least 36 parking spaces or more than 12,000 square feet of open parking lot area.

Such developments, enlargements or zoning lots shall locate cross access connections in accordance with the requirements of Sections 36-593 and 36-594.