5801 23RD DR W BASE FILE 2016-01-01 MF Import

landscsping in the Subarea be natioe,h}'brid natives, or drou;ht-tolerant. Landscape plans should show an attempt to reach this goal unless landscaping�vith these species ��ill not meet the objective of the proposal(e.e., �olf d:ivin;range, ball fields,etc.). Plants u�ith noted habitat or food value for wildlife should be selected��herever possible. Invasive;pecies snall not be plamed. �1 list aCnative recommended species is inc:uded in Appendi:,3.4.6 of the S�V Everett/Paine Field Subarea Plan I:IS. \Vhere native,hybrid natives and/or drought•tolerant species 2re Flanted, pernianent irriga[ion systems shall not be required. Temporary ircigution mcst be provided for nvo ycars after planting. (SEPA Plant and Animal, Water and Public Services Policies) d. Plantines in environmenta!ly sensitive areas and their buffers inust be designed m simulate Pacific N W native plant communities in tcrms uf composition, covcr-abundance, and structure. .qll mitisation plans shall include herbs ia the plantin�plan. Diversity of environmentally sensitive are;,buffer habitat muse alsc be ensured through the planting of later successional forested stages of vegetation (e.g. Westem red cedar, Douglas fir,and �Vestem hemlock)where needed and appropriate. (SEPA Pla•n and Animal Policies) >. Exotic invasive species must be centrofled. En�lish ivy(Hedera helis) shall not be planted in the Subarea Propertics must be maintained to eliminate Scct's broom and other invasive specics. (SBPA Plant and Animal and Land and Shoreline Use Policies) 6. Althou�h eagles are not currendy kno«n to be nestine in the Subarea, they do nest in the study area. Eagles sometimes move nest locuions within thcir tertitorics,and more eaelcs are nestine in urban areas, o8en at sites Ihat appcar to be exvemcly marginal(Milner, 199G). Potential nesting sites do occur and will cor.tinue ro occur witBin the ravines and in other forested areas tvidtin the Subarea. The City's Em�ironmentally Sensitive Areas Ordinance requires thnt trees �vithin the ravines and other environmentally sensitive areas be protected in most cases. (Trees in e�rviroumentally sensitive areas may be cut in emergency simations, such as where they pose a hazard to structures, and (or construction of reyuired ucilities.) If a nest does occur on or adjacent to a development propostl, the o��ner currenQy must obtain approvals from the Washington Depanmcnt o(Fish and \VildliCe bcforc hc/shc c�n obt�in n pemiit fram thc City. 7. Fcnces shall not be pennittcd where they would rest:ict wildli(e movement through em�ironmentnlly sensitive areas/�vildlife corzidors. (SFPA Plant and Animal and Land and Shoreline Use Policies) 4.3.3 11i[ig .ing Impacts on Strcams, Fish,;md fish Flabitat I. Areas with soils suitable for laree scale infiltration should be protected. Due to the construction of ne�v impen�ious surfaces. stormwatcr rolumes will increase signiticandy. Base flow reductions can only be � miti5atcd by the use o(intiltra[ion systems for collected stornnvater. Infiltration systems will be required whenever feasible,as determined by the Fublic Works Department,particularly for rooftop runoff. This smdy arza, however, has few areas of soils suitable for large scale infiltration.The Associated Sand and Gravel property located south ofSie��ers-Duecy Dlvd. is one area where stomiwater is currendy being infiltrated. Infiltra[ion must continuc to occur on that site. (SEPA Nater, Plant and Animal,and Land and Shoreline Use Policics) I _ 2 :lssisting the conversion of riparian zones from deciduous to cnniferous or mixed forest wiil improve the long- term fish and tcrrestrial habitat of diac strcams. R'hile riparian corrido�s are curtendy pmviding needed �cological funetians, most of these stands are dominaied by red aldec Red alder is a relatively short-lived �pecies, and alder=na,s and lugs decay rclati�ely rapidiy. A farest stand including conifers would have a longer lived cauopy and�aould provide lan,cr-lastin�woody debr,s to the channels. Natural regeneration of conif'ers witnin the riparian corridors is slu��, and silvicultural ireatments designed ta encouraee forest succession to conifers would cvenmally enhance��•ildlife habitat and st�eam conditions. Additional coniferous trec plontings shall be required in riparian corridors in conjunction with issuance of permits for development on sitzs containing tiiese corridors when die Planning Director determines that the corridor can be enhanced, ��