3911 FRIDAY AVE 2016-01-01 MF Import

I � I I � NORTHWEST,.�RBORVITAE•Forttsi's oRw►M�-�1 DIAGN06TIC SERVICES I - wos�umd • wooau�.aw,ww�p�on aeon • Raa�� Mater9als� equiAre�tltr te�OrarY buiidirgs� fuels� p33nts� and pt]�er ' oo�stn�ctiam itaas should not be plaaed within the retensirn zones ar within the dripline af a tree. 51 APPPDPRIAI� TRF� FII.LII�IG T�IIQOFS: Trees to be r�r�v�ed shauld be felled so as to awoid i�aacting leave trees. Tirees in root oontact with leave trees should be cut at the base near the graad. Stia�s should then be 4ramd and chiPPed in place instead of being �ulled ar dozed ot�t. This pxev�ts loosening of roots of trees to be *prai,,.a, 6) F�iCIIJG: Although many Mmicipal Ordinances pll ca� fencing at the dripline, studies indicate that the majarity of roots lie �xrtside the dripline. It is no wo�drs that eveT txees that are Mte�ll protected diu�itx3 landscape oa�nstructia�n often die. Ftoots aay exter�d 2 to 3 tines the �.idth of the canopy aften 3a irreg�laz patte�s. Pattem af root occuranoe can sanetimes be estimated by a qnalified ]lrbazist, therefore the distance fran the st�s w?x��e �t�e heavy chain link fen�e shwld be placed should be detessnined by the �tborist. 7) VfIISTIFS � �.��1G: It is preferable not to trench in rootiones. If utilities must pass throuyh these aieas, ttaaieling met2�ods should be used aocording to the specificatians far txau�eli� arcl txenching near tsees for the installattaa� of utility lines (Jadc lCiim�l, 1978 table 7-1 Harris.) If ttameling is not possible. r� rnee si,o�a be ev�uar.ea r,� rhe ca�it,iny ]1=bo__ist for prc�bable root loss peroeirtage ard su=y;vai potr�tial, If the decisi.an to tre:rh is aade, the 1lrbozist should be m hazd to instsuct equig�nt operators in the xnot pzwiitg prooediu+e . Fnots shcald either be wt with a rootcvtter �see attached). o�t saw, or uncove=ed by a dOZP2' Shov01� hnicMri Off �7d e�osed bY �� 49�9i ar$ �lt cleanly or pnmed Vith a saw or Pnmi� strars. Heavy equ{pment shwld riever excavate � ts�ch in root zanPs of trees to be saved without root p¢laiing ooctisring first. The result of not root p�na►ing is the ripping and splitting of xvots and root collar azeas. 8) F�CCAVATICN FC�t BUIIDItJGS: I� 2xcavatia� fa¢� buildingS occurs 3n the wtet ioot area of trees, t1�ce roots should mt renain exposed. DxavaticaLs fa� build'u�gs are deeper than excavations desigred to lower qrade ard rrill not be ar�letely filled until the buildir�q is c:onpleted. Tb awid prolonged root ' expos-ur'e�,_fjo_llow dix+ections as described by Aarris in the constzuction of a �Y.�� .11.{.G.LfI• ' F�cczvatinq back to xithin half the distatne betwe� the dripline ard the tnailc would remwe about 30t of the shallow xonts. Most healthy trees shwld be able to withstand rn�roval of 30i of the shallaw roots if trees are thiiufad proportionately and tratered rtare freqtrs�tly. prune roots obliquely so that cvt surfaces faoe down. Do NOT paint wo�a�ds above or below gzaurl. �P �; 9) DISPO6ING OF F7CCA�7ATID SDIIS: Dccavated soils shwld not be placed aver