(a) At least one off-street parking space must be provided for each 4,000 sq. ft. of cumulative gross floor area of buildings in the district.
(b) In SP-INS districts with a total contiguous land area of less than 40 acres, required off-street parking areas must be located within 1,000 ft. of the building or buildings that they are proposed to serve. In SP-INS districts with a total contiguous land area of 40 acres or more, required off-street parking areas must be located within 2,000 ft. of the building or buildings that they are proposed to serve.