Ordinance No. 20513 - Laserfiche WebLink

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Exhibit 4 subsection and by removing non - native invasive plant species and planting species consistent with subsection (b) below. 1. All refuse, toxic materials, and any fill that limits or decreases the capacity of the area to filter pollutants from runoff that flows across the area shall be removed (not including stormwater collected and discharged from impervious surfaces). 2. Non - native invasive plants shall be permanently removed to the maximum extent practicable and replaced with plant species in accordance with subsection (b) below. (b) Planting and Replanting. Planting or replanting within the S -DR /CL subdistrict shall comply with the following standards. 1. Riverfront Park Planting Standards. In areas designated as riverfront park on Figure EC 9.3185, all of the trees and at least 80 percent of the total number of shrub plants, 60 percent of the total number of grass plants, and 60 percent of the total number of groundcover plants shall consist of plant species selected from the list of native plants in Appendix A of the Downtown Riverfront Specific Area Plan or the list of native plants in the Goal 5 Native and Non - native Plant List (Exhibit F to Ordinance No. 20351). 2. Riparian Enhancement Planting Standards. In areas designated as riparian enhancement on Figure EC 9.3185, all plantings shall be plant species selected from the list of native plants in Appendix A of the Downtown Riverfront Specific Area Plan or the list of native plants in the Goal 5 Native and Non - native Plant List (Exhibit F to Ordinance No. 20351). a. Planting or replanting within 25 feet of the Willamette River ordinary high water line shall include native tree or large shrub species. b. Where non - native or damaged trees are removed within 25 feet of the Willamette River ordinary high water line, they shall be replaced with native tree or large shrub species, unless the tree removal occurs within an identified view corridor shown on Figure 4 -4 in the Downtown Riverfront Specific Area Plan. 3. Replanting of areas cleared of existing vegetation must be completed within 90 days following the removal or clearing, unless otherwise approved by the planning director. 4. Planting and replanting with seed shall be timed so that germination occurs prior to November 15, unless germination requirements of the seed require otherwise, in which case germination shall be accomplished at the earliest date practicable. 5. Plantings shall not adversely affect adjacent protected water resources or existing native vegetation through shading or invasion by plant species. 6. Non - native invasive species are prohibited in the S -DR Zone. (c) Construction Practices. Construction within the S -DR /CL subdistrict shall comply with the following standards. 1. For purposes of this subsection, heavy machinery is defined as motorized or mechanized machinery or equipment capable of deliberately or inadvertently damaging vegetation, or damaging or compacting soil. The following standards shall apply to use of heavy machinery within the S -DR /CL subdistrict. 29