martinhouseclr

207 5 // TREATMENT RECOMMENDATIONS new feature shall match the old in design, color, texture, and other visual qualities and, where possible, materials. Replacement of missing features shall be substantiated by documentary, physical, or pictorial evidence. 7. Chemical or physical treatments, such as sandblasting, that cause damage to historic materials shall not be used. The surface cleaning of structures, if appropriate, shall be undertaken using the gentlest means possible. 8. Significant archeological resources affected by a project shall be protected and preserved. If such resources must be disturbed, mitigation measures shall be undertaken. 9. New additions, exterior alterations, or related new construction shall not destroy historic materials that characterize the property. The new work shall be differentiated from the old and shall be compatible with the massing, size, scale, and architectural features to protect the historic integrity of the property and its environment. 10. New additions and adjacent or related new construction shall be undertaken in such a manner that if removed in the future, the essential form and integrity of the historic property and its environment would be unimpaired. Desired Restoration of Individual Garden Spaces While a comprehensive restoration treatment approach cannot currently be accomplished on this property, it is recognized that it is a desirable treatment approach with respect to the many of the landscape’s individual garden spaces and the overall spatial organization of the property as defined and created by plant material. Many of the treatment guidelines and rehabilitation tasks outlined in these recommendations stem from a desire to be as accurate as possible and, if the potential exists for a proposed landscape treatment to meet the standards for restoration, effort should be made restore those features. Likewise, where possible, it is recommended that the landscape’s overall visual and spatial relationships are restored, emphasizing the reintroduction of the documented three- dimensional organization and the patterns of spatial definition primarily created by plant material during the Period of Significance. [Fig. 191] At present, features and materials to replace are primarily related to vegetative materials, and include the replacement of deciduous and evergreen trees, vegetative screens, naturalistic shrub massings, selected ornamental flowering shrub focal points, vine trellises, and perennial gardens. It is believed that there is adequate documentation of these characteristics to perform an accurate restoration of visual and spatial relationships for many of the individual garden spaces. Fig. 191 The interior courtyard garden is a prime candidate for restoration due to the simplified plant palette.