a. Installation. Street trees, at least 2.5 inches in caliper or as approved by the Director, shall be planted at least three feet from the face of the street curb, and spaced a maximum of 20 feet for small trees, 25 feet for medium trees, and 30 feet for large trees. The size of the tree shall be determined by Plate B of this section, as now or hereafter amended. A street tree planting area may also include decorative paving and other native plant materials, except grass that requires mowing. The use of planter strips for stormwater treatment is encouraged. Installation shall be in accordance with the Parks and Community Services Department Environmental Best Management Practices and Design Standards, as now or hereafter amended.

b. Irrigation. A permanent automatic irrigation system shall be provided at the time of installation of street trees and sidewalk planting strip landscaping located in a required planter strip or tree pit. The use of rainwater to irrigate is encouraged. Rainwater irrigations systems that do not meet the total demand for landscape water, shall be served by a separate water meter installed by the applicant and served by City-owned water supply with 24-hour access by the City. The irrigation system shall be designed per the Parks and Community Services Department Environmental Best Management Practices and Design Standards, as now or hereafter amended.

a. General. Any development situated within Perimeter Overlays A-1 and A-2 shall provide a linear buffer within the minimum setback from the Downtown boundary required by LUC Chart 20.25A.060.A.4. The purpose of this feature is to produce a green buffer that will soften the visual impact of larger buildings as viewed from the lower intensity Land Use Districts adjacent to Downtown. These design standards are minimum requirements for the size and quantity of trees and other linear buffer elements. The specific design of the linear buffer for each project shall be determined through the Design Review process. Design considerations include, but are not limited to, the placement of elements and their relationship to adjacent property as well as to the proposed development. Different sets of design standards apply to each of the locational conditions.

b. Measurement of the Minimum Setback from Downtown Boundary.

a. Shall have a minimum width of 20 feet;

b. Shall not be used for parking, and vehicular access drives shall be no more than 25 percent of the total area of the linear buffer;

c. Shall include seasonal color in an amount of at least 10 percent of the linear buffer area; and

d. Shall utilize native species for at least 50 percent of the plantings located within the linear buffer area.

a. Three deciduous trees, with a minimum caliper of 2.5 inches, per each 1,000 square feet of the linear buffer area.

b. Two flowering trees, with a minimum caliper of two inches, per each 1,000 square feet of linear buffer area.

c. Ten evergreen shrubs, minimum five-gallon size, per 1,000 square feet of the linear buffer area.

d. Living ground cover that provides cover of unpaved portions of the linear buffer within three years.

e. Walls and fences that do not exceed 30 inches.

f. Accessibility Both Visually and Physically. The linear buffer shall abut and be within three feet in elevation of the required sidewalk, or alternative access shall be provided.

g. Allowed Hardscape in Perimeter Overlay A-1. Seventy-five percent of the linear buffer shall be planted in Perimeter Overlay A-1. The other 25 percent may be paved with pervious pavement, brick, stone or tile in a pattern and texture that is level and slip resistant. The paved portion of the linear buffer may be used for private recreational space and residential entries.

a. The entire linear buffer shall be planted except for allowed paved portions. No portion may be paved except for required vehicular entrance drives, required through-block connections, patios that do not exceed 25 percent of the area of the required linear buffer, and residential entries that do not exceed 25 percent of the area of the required linear buffer.

b. The linear buffer shall be planted with:

a. To secure a construction site or area during the period of construction, site alteration or other modification; and

b. In connection with any approved temporary or special event use. (Ord. 6377, 10-16-17, § 2)