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TUKWILA COMPREHENSIVE PLAN <br />throughout the fruc‘n;.", -lamaged by installation or <br />t-.1.T'r',7nance of irf w d evel.opment. <br />7.7:ae v have <br />Darrgyv„ riparian :nat have ..;-N,:!er.. i •• ion <br />oyer_the:yearsjed -6-% • len?. areas„ <br />Some reaches of the C-rer are characterized by large native c.!nopy <br />tree 5 (Eoster Golf,Ceursejor_exarriple), while_in other,„„,areasAbere <br />is ro tree canopy. and large expanses of invasive veg.etation <br />in5tea4„Trees have_17,,T7r, removed from the Green River levee,_ <br />scut:n of SR 405,2o Corns nf Fng—irTers requirements. <br />Several .::,.,..ojects to enhance t11, urban <br />forest have been C:1t.,y'Fy,--1-- <br />wetl..Lds and st.7:eatnr.Land along the Duwa2-: River. Trf -- have <br />been...plantg.d„,41Qp.44 the river b , Count)_ r- ltign for , <br />removal of trees elsewhere. The City also plarls :;:cndreds of trees <br />in it,542_41:ks each earl_requires trees as /-,rt larirl=caring_for <br />commercial, industrial office and multi- 7__ments; <br />requires tree replacement in sensitive areas. <br />However, the City do-- not have a comprehensive written urban <br />forestry plan. street t , or other pragrm in place to ensure a <br />health -rban forest -te-oss all areas of the City. A program to <br />imprr,ve ff,-,rest should include the fOlowing aspects: <br />• I' rve existing trees and forest; <br />• PriL -!rve and improve the "tree-gro7,,,,i-:1,4_",_eilYil:c.cc, <br />provide adequate growing conditions for trees); and <br />• Plant for the long-term (ensure the_r_ight_tree in the right_ <br />place, sufficient provisions for tree maintenance . d caret <br />• Stored Carbon - 71,000 Tons <br />• Sequestered Carbon - 2300 Ton/yr 4 <br />• Carbon Monoxide (CO) - 4.3 Ton/yr 4 <br />• Nitrogen Dioxide (NO2) - 10 Ton/yr 4 <br />• Ozone (03) - 4.3 Ton/yr <br />• Sulfur Dioxide (S02) - 8.5 Ton/yr 4 <br />• Particulate Matter - 15.7 Ton/yr 4 <br />Yearly Benefit - $493K <br />$1.4M <br />$48K <br />$4K <br />$89K <br />$240K <br />$18K <br />$94K <br />The Natural Environment <br />The v <br />the ct <br />imprc <br />total • <br />vraph <br />ue that Tukwila's trees provide to <br />'iimunitvin terms of air quality <br />■,ements was calculated to equal a <br />f $443 000.00as detailed in the <br />c. (side bar) <br />December <br />.4, ! <br />2013 <br />9 <br />