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6 Village Green Campus Tree Retention Plan West L2.2I' LEGEND EXISTING CONIFER &DECIDUOUS TREE >6" DBH u o TREE TO BE REMOVED mhl <zZ l j — j� sft7 SIZE OF TREE AT DBH (DOUGLAS FIR, 17" DBH) now #116 TREE NUMBER TO BE REMOVED LIMIT OF WORK NOTES TREE &VEGETATION RETENTION Minimum tree density for Parcel West RS 9.6 zone is 25 tree units per acre. a,r, Subject Parcel West size = 4.86 acres p / 25 tree units x 4.86 acres = 122 tree units required — b \(f I 223 -Proposed Tree Units to be removed ji 301 - Remaining Tree Units after removal of proposed trees 55 - Minimum Additional Tree Units 52 - Deciduous Trees (small, medium, large canopy species, <450 sf - >1250sf) _u 3 -Evergreen Trees (smallQ , medium, large canopy species, <450 sf - >1250sf) 0 � O F- t a. � w 356 TOTAL TREE UNITS proposed at completion of project (excluding Landscape Buffer) � O 0 - Additional Tree Units required M 4 ry lip- e•.�'�'�'_---� � ` ., `: _"` --_ __ _ __ fit D> U a) > (DQ > i. LL. 76 0)� F13 GENERAL TREE RETENTION NOTES % 1L av 1. No clearing shall be allowed on a proposed development site until the tree retention and Fit,- D F 34 F 1 3 D I 14 landscape plans have been approved by the city of Federal Way. DI-1 2 lam/ 2. A disturbance area shall be established for each tree to be protected. The no disturbance zone / F 1 i - 2 shall be equal to the critical root zone which is defined as 12 inches radius for every one inch of 2 2 % -half feet above ground. Any other no disturbance area aF1 I( D 4 tree diameter measured at four and one proposed by the applicant shall be determined by a qualified arborist and subject to review and F3C? DF19 DF 1 4 (3 _ approval by the director. -15 F18 DF35 I The no disturbance zone shall be identified during the construction stage with: �+ 1D F�1 F 1 D F 1 5 (a) A temporary five-foot chain -link fence; and F*6D,F 16 F 15 ` D F 1 6 D F 1 (b) Tree protection signage attached tothefence which reads "TREE PROTECTION FENCE - 0 D F 1 6 No soil disturbance, parking, storage, dumping, or burning of materials is allowed within the 0 � % DF16 F 8 ' D F 16 D F 12 *DF1 `J Tree Protection Fence." J �I DF j' 3. No soil disturbance, parking, storage, dumping, burning of materials, impervious surfaces, fill, �> I � F12 F14, 0 i excavation, or storage of construction materials shall be permitted within the no disturbance area,. L` N O LJF12 'DF16 pF12 �t 1 � F 7 DF 1 4. If the grade level around the. tree is to be raised by more than one foot, a rock well shall be � N U F- , _ N O --------�---�---"�--�s,.a-- �.� constructed. The inside diameter of the rock well shall be equal t4 the diameter of the tree trunk n Q I P N D F 1 pus 10 feet, roper drainage; and Irrigation If necessary, shall provided In all rock wells. i 0 5. The grade level shall not b low e within g e lowered thin theJargerof the drip brie of the tree(s) or the critical -L? Q p _ __ _ � F 1 3 D F q 1 root zone of the tree(s). 4 _ Lo >, __. y F 16 'o a 6. No trenching Is allowed In any critical tree root zone areas. ._ D v, 7. No installation of an impervious surfaces Is allowed in critical root zones. Where road or sidewalk QF12 15 v p >� t6 t57 14 , surfaces are needed within critical root zones, unmortared porous pavers or flagstone rather than •-% tt3 G [)F16 F 2 .� 9 ( — _-- concrete or asphalt) may be used. Boardwalks or bridging may span root zones without harmingN F1 5 the tree roots. O T) OO cj O DF:1 DF16 �� p F 2 8. Tree protection areas i.e.; critical root zone) must be prepared to better withstand the stresses of >' 0 � � DF18, � << ��; p ( p. p J r F- N the construction phase b if necessary, fertilizing, pruning, and mulching around them well in D(�18 DF��} r � p Y, rY g, p 9, g (� r 1 /� D F ` / advance of beginning any construction activities. �e . ��� 9. Alternative rotection methods may be Used rf accepted t (�} 1 6 QF1 ' , �p y by the director to provide equal orgreater , D DF16 D'F 1 tree protection. 1 10. Encroachment into the no disturbance area. may be allowed where i y e e the director determines DF1 c3 Q F 12 D F 14 D 1 D F 1 encroachment would not be detrimental to the health of the tree. D DF1 DF2 F 13 DF14 DF14 DF21 QF1. NOTES:. 1 F1 5 DF 4 DRIPLINE=x FENCING/ROOT PROTECTION F 1 5 1. PROVIDE CHAIN LINK FENCING AND MAINTAIN 3' OUTSIDE �. OF TREE DRIPLINE. D r ( D F 1 3 TRENCHING AND EXCAVATION :((� I F 1 2 ZONE A- CRITICAL ROOT ZONE D F 7 1. NO DISTURBANCE ALLOWED WITHOUT SITE INSPECTION 1 _ F 2 AND APPROVAL OF METHODS TO MINIMIZE ROOT DAMAGE E D 2. SEVERANCE OF ROOTS LARGER THAT 2" IN DIAMETER REQUIRES APPROVAL FROM COUNTY. a D j- F 1 '? 3. TUNNELING IS REQUIRED TO INSTALL LINE TOR DEEPER D 15 :: BELOW GRADE. .© i EQ. Eo: ZONEB - DRIPLINE 4) N T. OPERATION OF HEAVY EQUIPMENT AND/OR STOCKPILING : S OF MATERIALS IS NOT PERMITTED. L , 2. SURFACE PROTECTION MEASURES REQUIRING - 4-0 zoNEnoui.=zx TRENCHING ALLOWED AS FOLLOWS: A.EXCAVATION BY HAND OR WITH HAND OPERATED: I TRENCHER MAY BE REQUIRED. zoNEeow.=x B. LIMIT TRENCHING WIDTH. DO NOT DISTURB ZONE A. ZONE c i MAINTAIN 213 OR MORE OF ZONE B IN UNDISTURBED Din.- sx CONDITION. .. 3. TUNNELING IS REQUIRED TO INSTALL LINE. T OR DEEPER BELOW GRADE. ZONE C -FEEDER ROOT ZONE 1: OPERATION OF HEAVY EQUIPMENT ANDIOR STOCKPILING ' > OF MATERIALS IS NOT PERMITTED, -w 2. TRENCHING WITH HEAVY EQUIPMENT ALLOWED AS W 1 FOLLOWS: '- A.MINIMIZETRENCH WIDTH. B. LIMIT TRENCHING WIDTH. DO NOT DISTURB ZONE A. Q nw gg MAINTAIN 213 OR MORE OF ZONE C IN UNDISTURBED CONDITION. o z .. �.. SURFACE PROTECTION MEASURES z y Qi 1. 6-8" DEPTH OF WOOD CHIP MULCH. N w 5 2. 3t4"THICK PLYWOOD SHEETS OR STEEL PLATES, o o o v z 0 15' 30' 60' 120' TREE PROTECTION DETAIL SCALE: NTS N co Graphic Scale: 1" = 30'-0 Em . n ,. o J Z } a a 0o