Specifications include, but are not limited to: - Apply acid treatment to remove all traces of hardened Portland cement mortar, calcite and related efflorescent materials where deposited on the surface of the face stone units; clean biological infestation/soil/stain deposits from surface of stone. - Remove existing mortar from the joints and install new mortar. - Inject grout materials into wall cavities filling them solid to eliminate voids. - Insert replacement stones in locations where they have been dislodged from the wall. - Construct a continuous cement-based weather cap on the top surface extending across the width of the wall, including removal of existing EPDM membrane materials and cleaning and preparing substrates.