Landscape shall be constructed in accordance with the standard description attached hereto and made a part hereof, as Exhibit A, and shall consist of a berm elevated to five feet, on which and in which shall be located deciduous trees, which shall, at the top of the berm, at the time of installation, be not less than 19 feet in height, with a total berm and tree elevation of 24 feet minimum, or 80% of the height of the sign.