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February 6th, 2018 G-4588 <br /> 2525 Taylor Drive Page 2 <br /> GEO Group Northwest recommends using three or more different species of native plants for restoration <br /> of vegetation in the revegetation area,to be planted in parts of the slope that do not already contain <br /> existing,non-invasive vegetation. Some options for native plants that should grow well in the region <br /> include: <br /> • Sword Ferns <br /> • Brakken Ferns <br /> • Oregon Grape <br /> • Saint John's Wort <br /> • Red Currant <br /> • Clover <br /> These plants should improve the stability of the slope while mitigating erosion,but will take time to grow <br /> and establish root systems.Also,being all shrubs or low-growing vegetation,these plants should not <br /> grow excessively large to block the coastal view afforded by the property. Guidelines and best practices <br /> described in local nursery publications or advised by qualified plant specialists,such as spacing <br /> recommendations specific to plants used, should be followed in addition to those provided in this report <br /> when developing a revegetation plan and administering planting of the plants. <br /> If the steepness of the slope severely limits accessibility on the slope and makes planting difficult,GEO <br /> Group Northwest recommends hydroseeding the revegetation area with native plant species seed mixes as <br /> an alternative to the recommendations described previously. <br /> We appreciate the opportunity to provide geotechnical consulting services for this project. Feel free to <br /> contact us for questions regarding this report. <br /> Sincerely, <br /> GEO GROUP NORTHWEST,INC. <br /> NoA <br /> ffr <br /> David Crawford,KITW ASS,, fir' <br /> Staff Engineer <br /> r r�✓" <br /> sTs - <br /> William Chang,P.E, • 6/Ot \, <br /> Principal <br /> GEO Group Northwest,Inc. <br />