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SEC. 4. RELATION TO CITY PLANNING CODE AND REDEVELOPMENT PLAN FOR THE RINCON POINT-SOUTH BEACH PROJECT AREA. (a) Article 10 of the City Planning Code is the basic law governing historic preservation in the City and County of San Francisco. This ordinance, being a specific application of Article 10, is both subject to and in addition to the provisions thereof. (b) Except as may be specifically provided to the contrary in the ordinance, nothing in this ordinance shall supersede, impair or modify any City Planning Code provisions applicable to property in the South End Historic District, including but not limited to existing and future regulations controlling uses, height, bulk, coverage, floor area ratio, required open space, off- street parking and signs. (c) Nothing in this ordinance shall supersede, impair or modify any provisions of the Redevelopment Plan (including the Design for Development), for the Rincon Point-South Beach Project Area which are applicable to property located in such Redevelopment Project Area and designated part of this South End Historic District. (Added by Ord. 104-90, App. 3/23/90) SEC. 5. STATEMENT OF SIGNIFICANCE. (a) History of the area: For decades after the 1849 Gold Rush, San Francisco was the principal seaport and connection with the outside world for California and the West Coast. San Francisco's expansion and transformation into one of the most important cities in North America is attributable to the eminence of its port which, because of its sheltered location and deep water, became one of the best-suited on the Pacific Ocean. The development of warehouses over a 120-year period along the southern waterfront provides a benchmark from which to view architectural and technological responses to the rapid