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• 410 <br /> r <br /> Norton Ave SFR-CAR&Mitigation Plan <br /> Common Name Scientific Name Spacing Quantity <br /> Western Red Cedar Thuja plicata 10 to 15-feet on center 12 1 <br /> Douglas fir Psuedotsuga menziesii 10 to 15-feet on center 12 <br /> Big leaf maple Acer macrophyllum 10 to 15-feet on center 8 1 <br /> Vine maple Acer circinatum 3 to 5-feet on center 80 <br /> Oceanspray Holodiscus discolor 3 to 5-feet on center 104 <br /> Nootka rose Rosa nootkana 3 to 5-feet on center 112 <br /> Snowberry Symphoricarpos albus 3 to 5-feet on center 98 <br /> Indian plum Oemleria cerasiformis 3 to 5-feet on center 97 <br /> 4.3 Post Construction Functions and Values If <br /> The implementation of the propose mitigation measures should result in a net increase of local <br /> functions and values. The installation of a dense shrub and forested buffer area will over time provide <br /> an increase in water quality improvement capabilities and biological support functions. The dense ji <br /> vegetation community will also provide noise and visual screening between the proposed residence and <br /> the existing wetland area. The removal of invasive vegetation will also provide an increase in habitat <br /> quality for local wildlife that utilize the site for refuge,foraging,and nesting. <br /> i <br /> ii <br /> 5.0 Goals, Objectives, and Performance Standards r <br /> i <br /> Goal 1:Enhance functional performance and increase habitat structure and diversity in the wetland <br /> and stream buffer area on-site. <br /> 1 <br /> 3 <br /> Objective 1: Enhance 10,177 SF of the buffer area by planting native trees and shrubs and j <br /> removing invasive vegetation. <br /> Objective 2: Preserve and enhance 427 SF of additional buffer area by planting native trees and <br /> shrubs and removing invasive vegetation. <br /> a <br /> 5 <br /> Performance Standards for Objectives 1-2: <br /> i) Survival of planted shrubs will be a minimum of 80%after five years.Staged survivability z <br /> requirements include: <br /> — 100%survivability after Year 1 s <br /> — Year 4 survivability is at a level to meet 80%by the end of Year 5 <br /> — 80%at'the end of Year 5 <br /> Evaluation Method:Transect sampling,visual inspection <br /> ii) Tree and shrub canopy cover percentages(including volunteers)during the monitoring 3 <br /> period will be: i <br /> a <br /> — 10%or greater at the end of Year 1 i <br /> — 35%or greater at the end of Year 3 3 <br /> — 60%or greater at the end of Year 5 <br /> Evaluation Method:Quadrat sampling <br /> ) <br /> 4 <br /> l <br />