5901 23RD DR W BASE FILE 2016-01-01 MF Import

landscaping in the Subarea be native, hybrid natives, or drought-tolarant. Landscape plar�s should show an attempt to reach this geal unless landscaping with these species will not meet the objective of the proposal(e.g., �olf drivin�rangz, ba:l fields,ctc.). Plants+��ith ncted hab�iat or food value for wiidlife should be selected wherever possible. Invasi�e species shall not be planred. :\ list of native recommer.ded species is included in Appendia 3.4.�i of'the 51y Evcrett'Painc Ficld Subarea Plan HIS. �1'here native, hybrid natives and/or drought-loleranc 5pecies are planted,permanene irrigadon systems shall not be required. Temporary irrigatioa must be proe ided for nvo years after planting. (S[FA Plant and Animal, \1'ater and Public Services Policies) a. Plantings in environmentally sensiti�'e arcas and�heir buffers must he desiened to simulate Pacific N1V nativc plant communities in terms of composition, cuvcr-abundance, �nd s?ructure. All mitigntion plans shall include herbs in the planting plan. Diversiry of envi�onmentally;ensitive area buffer habicat must also be ensured through thc planting of later successional forested stagzs of vegetation (e.g. 1Vestem red cedar, Douglas fir, and �Vestem hemlock)�vhere needed and appropriatr. (SGPA Plant and Animal Policies) �. Gsotic invasive species must be wntrolled. English ivy(Hedera helis) shall not be planted in the Subarea. Properties must be maintained to eliminate Scot's broom an:l other invasive species. (SEPA Plant and Animal and Land and Shorcline Use Policics) 6. Althoueh eagles arc not currendy kno«n to be nestine in the Subarca, they do nest in the study area. Eagles sometimes move nest locations within their territories, and more eagles are nesting in ur6an areas,of[en at sites that appcar to be extremely mareinal(Milner, 1996). Potendal nesting sites do occur and will con[inue to occur ��ithin the ravines and in other forested areas within the Sub�rea, l'he Ciry's Environmentally Sensiti��e Are�s Ordinance requ�res that trees within the ravines and other environmentally sensitive areas be protected in most cases. (Trees in em�ironmentnlly sensitive areas may be cut in emereency situations, such as where they pose a hazard to structures,and for wnstruction of required u[ilities.) If a nest does occur on or�,ijacent to a development propusal, the o�vner curzently must obtain approvals (rom the 1Vashineton Department of Fish and \Vildlifc bef'ore he/she can obtain a perniit from the City. 7. Fcnces shall not be permitted where thcy would restrict wildlife movement through environmentally sensiti�c areash��ildlife cortidors. (SEPA Plant and Animal and Land and Shoreline Use Policicsl 4.3.3 hlitigating Impacts on SU�c:uns, Pish,anJ Fish ftabitat L Areas wiih soils suitable for large scale infiltration should be protected. Due to thz conswction of new imperviucs surfaces,stormwater volumes�vili increase significandy. Base tlow reductions can only be mitigated by tlie use of infiltration systems for collected stonnwater. Infiltration systemsµ�ill be required �vhenever feasible, as detemiinud b�� the Public 1Vorks Department,particularly for rooftop runoff. This study area,however, I�as fe�.v arcas of soils suitable fm large scale infilu•aiion.The Associated Sand and Gravel propert}' located south of Sievers-Duecy I31vd. is one area where stormwxter is wrrendy being infiltrated, Inf iltration must continue to occur on that site. (SEPA \Vater, Plant and Animal, and Land and Shoreline Use Policies� ?. Assistin;the conversion of riparian zones from decidiwus to coniferous or mi�ed forest will improve the long- tenn f ish and terrestrial habitat of these sveams. Nhile riparian corridors are currently providing nezded ecological funetions, most of these stands are dominated by red alder. Red alder is a relatively shon-lived species, and alder sna;s and logs decay relatively rapidly. A forest stand includine conifers would have a longer li��ed canopy and�vould provide longervlastin�� voody debris to the chamiels. Namral regeneration of coniF;rs�vithin the riparian corridors is slo�v, and silviculturul treatments designed to encourage forest succession to conifers would evenwally enhance��ildlife habitat und stream conditions. Additional coniferous n ee pl;mtings shall be required in riparian corridors in cunjunction�cith issaance of pennits for development on sites containin�these corridars �eh�n the Planning Direcmr determines that the corridor can be enhanced, 10