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(1) General Standards.

(a) Developments shall conform with the landscaping standards of Chapter 25.180 PMC, especially PMC 25.180.060 for streets in the Broadmoor area, and PMC 25.180.070, Parking lot landscaping.

(b) Landscaping should maintain the selection of plants listed from the Washington Native Plant List for Franklin County (wnps.org). Xeriscape methods for drought-tolerant landscaping should be used. Plant material shall be a mixture of drought-tolerant deciduous and evergreen trees. Drought-tolerant plant materials may contribute up to 50 percent of the required landscaping ground cover and street trees.

(c) Preservation of mature trees should be considered during any development.

(d) Replacement of existing trees shall be 1:1.5 ratio.

(2) Street Frontage.

(a) Street trees shall be planted along public streets as shown in PMC 25.97.085, Public street environment and public realm.

(b) Developments must include street trees aligned in clusters of varied spacing or equal spacing depending on the street and neighborhood character.

(c) Where street trees are planted with equal spacing, spacing shall be 30 feet maximum from each center.

(d) Street tree minimum size at installation should be one and one-half-inch caliper.

(e) Street tree locations must be coordinated with the street lighting and utility plans to minimize interference.

(f) All landscaping elements, plant materials, and street trees shall be planted or installed by the developer and maintained by the property owners or business owners. A maintenance agreement among adjoining property owners shall be required; the agreement shall run with the land.

(3) Landscaping for Parking Lots and Buffers.

(a) The parking lots must be landscaped with large canopy type trees as listed in the recommended tree listing or as approved by the City, that provide shade without obstructing visual access to businesses. Trees should be allowed to mature and be maintained a minimum height of 30 feet. At least 40 percent of the entire parking lot must be shaded by these trees within 12 years of planting.

(b) Large parking lots shall be broken into smaller ones with landscaping and pedestrian connections. A landscaped area shall be within 75 feet of any parking stall.

(c) Safe pedestrian walkways shall be provided from the parking lot to the building and public sidewalks.

(d) Parking lots between the building and an arterial street shall have a minimum buffer of 15 feet between the parking lot and the property line. Single buildings in commercial land use exceeding 100,000 square feet (first floor only) that apply for an exemption according to PMC 25.97.090(2) shall include additional landscaping and buffer according to PMC 25.97.090(2)(d).

(e) Parking lots adjacent to local access streets and alleys shall have a minimum buffer of five feet between the parking lot and the property line.

(f) All developments shall provide interior parking landscape areas at the following rates:

(i) If parking lots have 10 to 30 parking stalls, then 20 square feet of interior parking landscape per parking stall shall be provided.

(ii) If parking lots have 31 to 50 parking stalls, then 25 square feet of interior parking landscape per parking stall shall be provided.

(iii) If parking lots have 51 or more parking stalls, then 30 square feet of interior parking landscape per parking stall shall be provided.

(g) Interior parking lot landscape areas distributed as planting islands or strips shall have an area of at least 100 square feet and a narrow dimension of no less than five feet in any direction.

(h) Priority for location of interior parking lot landscaping shall be:

(i) First, at the interior ends of each parking bay in a multiple lane parking area. This area shall be at least five feet wide and shall extend the length of the adjacent parking stall. This area shall contain at least one tree.

(ii) Second, with the remaining required square footage of landscape area being equally distributed throughout the interior of the parking lot either as islands between stalls or landscape strips between the two rows of a parking bay or along the perimeter of the parking lot. Interior landscape islands shall be at least five feet wide and shall extend the length of the adjacent parking stalls. Landscape strips must be a minimum five feet wide. [Ord. 4659 § 2, 2023.]