(a) Alteration or Relocation of an Historical Resource. An Historical Resource Preservation Plan for alterations and changes to the exterior of an historical structure or object, or for relocation of an historical structure shall conform to the following criteria:
1. Every reasonable effort shall be made to provide a compatible use for a property which requires minimal alteration of the building, structure, or site and its environment, or to use a property for its originally intended purpose.
2. The distinguishing original qualities or character of a building, structure, or site and its environment shall not be destroyed. The removal or alteration of any historic material or distinctive architectural features should be avoided when possible.
3. All buildings, structures, and sites shall be recognized as products of their own time. Alterations that have no historical basis and which seek to create an earlier or later appearance shall be discouraged.
4. Changes which may have take place in the course of time are evidence of the history and development of a building, structure, or site and its environment. These changes may have acquired significance in their own right, and this significance shall be recognized and respected.
5. Distinctive stylistic features or examples of skilled craftsmanship which characterize a building, structure, or site shall be treated with sensitivity.
6. Deteriorated architectural features shall be repaired rather than replaced, wherever possible. In the event replacement is necessary, the new material should match the material being replaced in composition, design, color, texture, and other visual qualities. Repair or replacement of missing architectural features should be based on accurate duplications of features substantiated by historic, physical or pictorial evidence, rather than on conjectural design or the availability of different architectural elements from other buildings or structures.
7. The surface cleaning of structures shall be undertaken with the gentlest means possible. Sandblasting and other cleaning methods that will damage the historic building materials should not be utilized.
8. Every reasonable effort shall be made to protect and preserve archaeological resources affected by, or adjacent to any project.
9. Alterations and additions to existing properties shall not destroy significant historical, architectural or cultural elements or materials, and shall be compatible with the size, scale, color, materials, and character of the property, neighborhood or environment.
10. Whenever possible, new additions or alterations to structures shall be done in a manner so that the essential form and integrity of the structure would be unimpaired.
(b) New Construction. Historic Resource Preservation Plans for construction of new structures on historic properties or in historic districts shall conform to the following criteria:
1. The location, siting and size of new construction on an historical property shall not detract from the historic character of the property, and the relationship between existing buildings, landscape features and open space.
2. All structures shall be designed in proportion and integrated into the historic character of the property or district by the use of compatible building materials and textures, construction methods, design, and color.
3. The size, location and arrangement of new on-site parking or loading ramps shall be designed so that they are as unobtrusive as possible and preserve the features of the property or district.
4. Ingress and egress, and internal traffic circulation shall preserve the historic features of the property.
5. Landscaping should be provided in keeping with the character and design of the historic site, property or district.
6. Disturbance of terrain around existing buildings or elsewhere on the property, should be minimized to reduce the possibility of destroying unknown archaeological materials. Where any proposed land alterations may impact important archaeological resources, a professional archaeological survey shall be provided and its recommendations implemented to mitigate potential impacts.
(c) Demolition. An Historical Resource Preservation Plan for the demolition of an historical structure or object shall include the following elements:
1. Information which supports the claim that preservation is not feasible due to the deteriorated condition of the structure or object, or would create exceptional hardship, or is necessary to alleviate a dangerous condition.
2. Provisions to preserve the historic values of the structure or object by documentation and/or preservation of artifacts and building materials.
3. Provisions to offer the structure to the general public for removal or dismantling for salvage at no cost or remuneration to the applicant. The availability of the structure shall be advertised by means of a 1/8 page display ad in a paper of general circulation in the County of Santa Cruz, at least twice during a thirty-day period. The advertisement shall include the address at which the structure proposed for demolition is located, information as to how arrangements can be made for relocation (through moving or dismantling) of the structure proposed for demolition, and the date after which a Demolition Permit may be issued. Evidence of this publication must be submitted prior to issuance of a Demolition Permit.