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AL_ i6$$5 FrcYcFtTWg Ccmg 960n DwnAld to Tr "s _ �,,e .,atpr nt,tp n divert cirainaae �ttems away from the Also, moisture m�Y �Velop prom graoe cn=Wcb u= juW1ui u� changes, as well. A rise in the water table, � from site. On the other laud, ex+�ess sots moisture may develop from grime improper g�iing, or an increase in water flarav through � a�a will tip crease tk� amount of oxygen �n the root zone and �ea�i -- to tree decline. Adding fill soil 4r cidting away excess sail altos the environment mound tree roosts. Hauling in OR reduces oxygen to the roots. Adding as little as i or 2 inches of heavy clay soil on tap of the e�dsting g� may damage s�ensit4ve trees such as oaks. The soil Mile aid sail pH are also altered. Topsod is often more acidic than excavated subsoils spread on the surface. Trees � � �o� � acidic topsoil will be used when fond t4 develop new roots in sail of a different pH and t�cture• Atxi�ity of roots to eke up marry micronutrien�s i� red�.u� in high pH soils, leadng to deer�d �owth gate aM yellowing leaves. Consauction material buried on-site also often raises sail pH. ymptoms of damage ,�.A ypWnis of nstrunn trees air over a period of several months to several years Ater the image occurs. development of mss it is often difficult for people to end the relation ip between the � of the delay p� � eadier mj� the current �1r. The first symptoms to develop may be a slight wilting or sheMng of a few leaves at the time of construction Fall coloration often develops early and heaves drop prematurely. In latex years, leaf size and shoot growth may be reduce. Twigs and branches die, and in the case of confers, excesm've needle drop occurs. General growth of the tree is slowed and resistance to diseases and insects is weakened Diagnosing compaction or root smothering damage can be difficult because it may take five to seven years for symptoms to appear. The speed and severity of symptom development depends on the amount of damage, the 5peC125 Of tree and Still type. The fit step in deciding Leh trees to save is to accwnaWly nark nnt placement of proposed WAW, driveways, Ong aTew and Wity routes. After marking these features, stand back to look over the site, A wW1 shift in the position of the buildin& a change in driveway lemon, or altering the proposed udUty line could make the difference between saving or c=' a valuable tee. AAer deciding on �� placmenta pnonfi= tm for saving, Trees dir %y in the way of construction; undesirable, weedy tree species; trees in a state of decline; or sttuctLirally lmwdous trees should be marked for removal. if in daub consult a tram arbor hortieultiri t, feres r or nursery person to deWnnm"e t= condition. Next, dctemine winch trees can be saved with little or no pmwcfion Desirable trees locaaed away from canstrucfion or traffic areas will survive if reasonable care is taken. The fug. grow of trees to examim are those that may serve conshuction, but only if proper measures are taken. Examine them more closely to a if one of th+f teehnues d�bed belay efftivelyrn drnae.f severe &mage is likely, A wM be lei eve to remove the tree before consawfion bed fl= aftward. F97T77T� 11 11 M111 Ti� I � : Wl Control traffic around trees Tree its are not mirror D. the tree top. Roots are concemtmW in the top 12 to IS inch of snit and spread two to hJtp:Itmuextensianm iP�&=i vdulexplaralsgguiftsihorV &U R&5 •him 'Page 2