Planning 2016-11-10 COMPLETE AGENDA PACKET

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2016 Draft Landscaping Code 4. Shrubs shall be at least 18 inches in height, and full and bushy at time of plantings. ( Commented [AC55]: Consistent with TMC 18.28 and lcurrent TMC 18.52 standards. 1 5. New plant materials shall include native species or non - native species with lower water requirements and that are adapted to the climatic conditions of the Puget Sound Region. Commented [AC56]: Revised based on Committee l f There must be a diversity of tree and shrub genus and species in the site landscaping, guidance to remove reference to drought tolerant plants. taking into account species in existing development around the site. a. If there are more than eight required trees, no more than 40 percent may be of one speclesl. �Portla mmented [CL57]: Items 5. a -c are from the City of b. If there are more than 24 required trees, no more than 20 percent may be of one nd 's landscaping code. species. c. If there are more than 25 required shrubs, no more than 50 percent may be of one species. 6. Any species that is listed on the State or King County noxious weed lists or otherwise known to be a nuisance or invasive shall not be �plantedl. -- -Commented [CL58]: 18.52.030 B.9. 7. Plant materials shall be selected that reinforce the landscape design concept, and are appropriate) to their location in terms of hardiness, cultural requirements, tolerance to Commented [CL59]: TMC 18.28.240 B.1.i. d - urban conditions, maintenance needs and growth characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8. The classification of plant material as trees, shrubs and evergreens shall be as listed in the Hortus Third, A Concise Dictionary of Plants Cultivated in the U.S. and Canada, as it now reads and as hereafter lamendedl. --� Commented [CL6O]: TMC 18.52.030 D.11. 9. Plant material requirements for bioretention facilities shall be in accordance with the City's Bioretention Plant List unless approved by the Director{. 10. Non - developed site areas, such as utility easements, shall be landscaped and /or treated with) dust and erosion control planting or surfacing such as evergreens, groundcover, shrubs, trees, sod or a combination of similar materials. In areas with overhead utilit transmi&soon- lines, no shrubs or trees shall be allowed that could mature -over 20 feet in height Trees should not be planted within 10 feet of underground utilities, such as power, water, sewer or storm drainage pipes. Commented [CL61]: OTAK— NPDES permit language Commented [CL62]: This language added by Planning Commission on 10/27/16 when reviewing revisions to landscape code to implement Low Impact Development amendments to code. Commented [CL63]: Slightly revised text from TMC 18.52.0401. Commented [CL64]: Text revisions suggested by PSE B. Tree Standards Formatted: Font: 12 pt 1. Tree species shall be appropriate for the planting environment as determined by the Department Director in consultation with the City environmentalist and seek to achieve a balance of the �ollowingl: I Commented [CL65]: From City of Tigard, Oregon Urban a. Consistency with approved Tree List or Bioretention Plant List. Forestry Manual .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . b. Compatibility with space constraints for roots and branches at maturity. c. Adequate species diversity citywide and reasonable resistance to pests and diseases. 2. Trees shall be provided adequate spacing from new and existing trees according to the following standards wherever Iposslblel: Commented [CL66]: From Tigard Urban Forestry Manual Page 11 of 19 11/2/2016 6:15 PM W:\ \Long Range Projects \2016 Landscaping Code Update \Draft TMC Chapter 18.52- Advisory Committee Revisions -2 ■ e J