The purposes of the Historic Landmark “L” Combining District are:
(a) To preserve, protect, enhance, and perpetuate those structures, objects, sites and areas of historic, archaeological, cultural, architectural, engineering, or aesthetic significance, importance, and value as part of the development, heritage or cultural characteristics of the County, state or nation.
(b) To identify those structures, objects, sites and districts which have been designated as Historic Resources by the Board of Supervisors pursuant to the provisions of the County Code, Chapter 16.42., Historic Resource Preservation.
(c) To regulate alterations, new construction, relocations, demolitions, and excavations which affect historic structures, objects, and sites or districts in accordance with the provisions of the County Code, Chapter 16.42., Historic Resource Preservation. (Ord. 2493, 10/18/77; 3344, 11/23/82; 3432, 8/23/83; 3632, 3/26/85; 3927, 6/28/88)