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I ! 1 I Chapter II - Development Standards & Urban Design Guidelines J I surface areas should be created to encourage root growth; approaches include continuous trenches, struc- I tural soil, etc. 1 b. Size - Street trees should be a minimum 36" box size at j time of planting. I c. Spacing - Trees should be located at approximately 25 feet on center, unless otherwise noted for specific Pre- I cise Plan Area conditions. 1 3. Landscaping in Surface Parking Lots - should be designed as I an integral feature of the overall site development plan. I a. Grid Tree Arrangement - In general, trees should be dis- tributed evenly throughout parking lots to provide shade Fountains and other special features are recommended in hardscape I and enhance appearance, particularly as seen from adja- plazas and open spaces. I cent streets and buildings. A regularly spaced grid of trees is encouraged, with trees planted toward the rear I of parking stalls rather than at the front of bays (see graphic). This arrangement provides more even distri- I bution of vegetation and shade throughout the parking area. I I b. Other Landscape Approaches - should be considered. These could utilize trellises, columns, walls, and/or ar- I bors with vines, hedges, wind rows, or other elements that reduce the scale and visual impact of parking areas. ., These elements should be consistent in design and ma- I terials with principal building(s) and other site fea- tures, and complementary with parking area lighting. I 4. Fountains - are recommended in hardscape open spaces to I provide cooling in hot weather. The design and materials should be related to the principal building(s) and/or palette A regularly-spaced grid of trees is the recommended approach to I of on-site furnishings. surface lot landscaping. J - 63 - Final Plan -June 2004 I