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APPROVED TRE RESUB1 BLD2022-0439+TREE INVENTORY+11.8.2022_10.16.37_AM+3208831M landscape design arborist services haileyamackay@gmail.com } S l u d i 0 206.849.4573 Nathan and Callie Angle 15899 72nd Ave W Edmonds, WA 98026 Re: Full Tree Inventory BLD2022-0439 RES U B Nov 08 2022 CITY OF EDMONDS DEVELOPMENT SERVICES DEPARTMENT APPROVED 12/16/22 DP This report summarizes information gathered during a Full Tree Inventory conducted on 01/16/22 and 01/17/22 at property address 15899 72nd Ave W in Edmonds, WA. The inventory in this report has been updated as of 08/24/22 to respond to City of Edmonds permit corrections. The property is an undeveloped, sloped lot at the end of 72nd Ave W. The property slopes west toward Puget Sound ending in a 40% steep slope. The east end of the site is primarily deciduous trees with a few conifers. There is an open clearing in the middle of the site bordered to the south by big leaf maples and western red cedar. At the top of the steep slope are several large doug fir and western red cedar. I conducted visual inspections, and probed any cavities present, of all trees located on the property and included on the survey according to International Society of Arboriculture (ISA) standards, adhering to the ISA code of ethics. Following the standard ISA procedures I inspected the trunk and basal root conditions, and the trunk and bark of the tree at close range. I also observed the structure and health of branches and needles, and the canopy and general growing conditions from afar. Deciduous trees (big leaf maple) have shed their leaves for the season and have not yet budded out for spring. As part of the review I evaluated the following information: • Tree Species • Trunk Diameter at Breast Height (DBH) • Crown Spread Diameter (CSD) for construction protection purposes for trees to remain during construction only • General Health and Growing Condition • Proximity to proposed structures and likelihood of survival after construction The City of Edmonds regulations regarding trees and development of private property are specified in 23.10.000 - .110 of the Edmonds Community Development Code (ECDC). 23.10.060-C states that a minimum of 30% of significant trees (trees greater than 6" DBH) shall be retained through the development of new single family lots. The Director may require the retention of additional significant trees to meet the intent of the ECDC, however it is my opinion that the proposed tree protection and retention plan, as drafted at the end of this document, meets the intent of the ECDC and closely follows the Priority Tree Retention Requirements listed in 23.10.060-D. The following table records information based on measurements and observations of all trees located within the property lines that were included in the survey (note: trees located on the 40% steep slope were not surveyed). Tree numbers in the left column correspond to numbers shown on the attached annotated survey and were tagged in the field for location reference. The column DBH shows Diameter Mlandscape design OSS arborist services haileyamackay@gmail.com } S l u d i 0 206.849.4573 at Breast Height for each tree, crown spread diameter as it pertains to protection of trees to be preserved through construction is described in the notes section. The minimum protection areas for trees to be retained was determined by estimated crown spread diameter, proximity to structures and grading, and the overall condition of the landscape at the base of each tree or grove of trees. For trees listed as co -dominate (having multiple trunks or leaders) the total DBH is shown as the sum of all trunks greater than 6" in diameter measured at 4'6" above the ground per ECDC 23.10.020-R; individual trunk DBH are listed in the notes. TREE DBH # SPECIES SPECIES (inches) NOTES 1 Western Redcedar Thuja plicata 12 2 Western Redcedar Thuja plicata 39 3 Western Redcedar Thuja plicata 22.5 4 Western Redcedar Thuja plicata 18 5 Western Redcedar Thuja plicata 18 6 Big Leaf Maple 7 Big Leaf Maple 8 Big Leaf Maple 9 Douglas Fir 10 Western Hemlock 11 Western Redcedar Acer macrophyllum 27.5 Acer macrophyllum 48 Acer macrophyllum 21 Pseudotsuga menziesii 20 Tsuga heterophylla 10 Thuja plicata 11 2 good health, condition double leader (17, 22), good health, condition - buttressed roots appear sound good health, condition - pistol -butt base appears sound good health, condition estimated DBH, on slope edge, good health, condition X - co-dom leaders (17.5, 11), fair health, condition. 24' CSD, 12' min. protection radius E/N) X - stump or remove. Poor health, condition - broken/dead branches, large oozing decay cavity (slime flux or similar bacterial infection observed). If stump to be salvaged - 4' protection radius each side. Not viable. fair health, condition good health, condition good health, condition. Crown limited by BLM 7. 30' CSD, 15' min. protection radius N side. good health, condition - grove. M landscape design arborist services haileyamackay@gmail.com } S l u d i 0 206.849.4573 Tsuga 12 Western Hemlock heterophylla 10 Pseudotsuga 13 Douglas Fir menziesii 11 14 Western Redcedar Thuja plicata 10 15 Western Redcedar Thuja plicata 10 16 Western Redcedar Thuja plicata 11 17 Western Redcedar Thuja plicata 11 18 Red Alder Alnus rubra 24 Tsuga 19 Western Hemlock heterophylla 10 Pseudotsuga 20 Douglas Fir menziesii 13 21 Western Redcedar Thuja plicata 10 Tsuga 22 Western Hemlock heterophylla 12 Acer 23 Big Leaf Maple macrophyllum 48 24 Western Redcedar Thuja plicata 12 25 Western Redcedar Thuja plicata 10 26 Western Redcedar Thuja plicata 10 27 Western Redcedar Thuja plicata 9 3 good health, condition - grove. good health, condition - grove. good health, condition - grove. 36' CSD, 18' min. protection radius N side. good health, condition - grove. good health, condition - grove. good health, condition - grove. good health, fair condition - buttress roots (growing from old stump), appears vigorous, corrected lean. good health, fair condition - corrected lean. fair health, condition - needle thinning lower 2/3 (shade?). 26' CSD, 13' min. protection radius N side. good health, condition - grove. good health, condition - grove. good health, fair condition. exposed/buttress roots (growing from old stump), appears stable and vigorous, minor broken limbs in canopy. 34' CSD, 17' min. protection radius N side. good health, condition - grove. good health, condition - grove. good health, condition - grove. good health, condition - grove. Mlandscape design OSS arborist services haileyamackay@gmail.com } S l u d i 0 206.849.4573 28 Western Redcedar Thuja plicata 12 29 Western Redcedar Thuja plicata 14 good health, condition - grove. 30' CSD, 15' min. protection radius N side. good health, condition - grove. tree not located in field tree not located in field 32 Western Redcedar Thuja plicata 16 fair health, condition. slightly thinning canopy. tree not located in field - off property? tree not located in field - off property? tree not located in field - off property? tree not located in field - off property? tree not located in field - off property? good health, fair condition - pistol -butt base Tsuga with exposed roots. 24' CSD, 12' min. 38 Western Hemlock heterophylla 14 protection radius all sides. co-dom leaders (17.5, 16.5), fair health, Acer condition. 16' CSD, 8' min. protection radius 39 Big Leaf Maple macrophyllum 34 all sides. Acer fair health, condition. 16' CSD, 8' min. 40 Big Leaf Maple macrophyllum 11.5 protection radius all sides. Acer 41 Big Leaf Maple macrophyllum 16 X - driveway. fair health, condition. Acer 42 Big Leaf Maple macrophyllum 8 X - driveway. fair health, condition. Acer 43 Big Leaf Maple macrophyllum 11 X - driveway, 6028. fair health, condition. Acer X - driveway, grade change, 6029. fair health, 44 Big Leaf Maple macrophyllum 16 condition. Acer fair health, condition. uneven canopy - grove. 45 Big Leaf Maple macrophyllum 18 10' min. protection area N side, 8' W side. Mlandscape design OSS arborist services haileyamackay@gmail.com } S l u d i 0 206.849.4573 Acer 46 Big Leaf Maple macrophyllum 20 fair health, condition. uneven canopy - grove. Acer 47 Big Leaf Maple macrophyllum 18 X - driveway. fair health, condition. Acer rx 48 Big Leaf Maple macrophyllum 20 - driveway. fair health, condition. co -dour leaders (3 above 4.5'), fair health, Acer condition - grove. 11' min, protection area W 49 Big Leaf Maple macrophyllum 25.5 side. Acer fair health, condition - grove. 11' min, 50 Big Leaf Maple macrophyllum 20 protection area W side. Acer fair health, condition - grove. on steep slope 51 Big Leaf Maple macrophyllum 9 near road. Acer fair health, condition - grove. 8' min. 52 Big Leaf Maple macrophyllum 18 protection area N/W sides. fair health, condition - grove. on steep slope 53 Western Redcedar Thuja plicata 14 near road. Acer co-dom (36,16), good health, fair condition. 54 Big Leaf Maple macrophyllum 52 25' min. protection area S. 55 tree not located in field Acer fair health, condition - grove. 25' min. 56 Big Leaf Maple macrophyllum 27 protection area S. Acer X - driveway, can't be saved due to grading. 57 Big Leaf Maple macrophyllum 22 fair health, condition. Acer X - driveway, can't be saved due to grading. 58 Big Leaf Maple macrophyllum 15.5 fair health, condition. Acer X - driveway, can't be saved due to grading. 59 Big Leaf Maple macrophyllum 14 fair health, condition. 60 Deciduou! tree not located in field or is less than 6" DBH 61 Deciduou! tree not located in field or is less than 6" DBH 5 Mlandscape design OSS arborist services haileyamackay@gmail.com } S l u d i 0 206.849.4573 62 Deciduous tree not located in field or is less than 6" DBH tree not located in field or is less than 6" DBH Acer X - Too close to walkway wall, stump or 64 Big Leaf Maple macrophyllum 12.5 remove. fair health, condition. Acer 65 Big Leaf Maple macrophyllum 16 X - driveway. fair health, condition. Acer 66 Big Leaf Maple macrophyllum 8 X - walkway. fair health, condition. Acer 67 Big Leaf Maple macrophyllum 12 X - walkway. fair health, condition. Acer 68 Big Leaf Maple macrophyllum 24 X - garage. fair health, condition. poor health, condition - Not viable. pistol -butt Acer base, small canopy. 10' min protection area 69 Big Leaf Maple macrophyllum 12 total. poor health, condition - Not viable. 16' CSD, Acer 8' min. protection area all sides, recommend 70 Big Leaf Maple macrophyllum 9 stump or wildlife tree. Acer X - 4'4" from corner of garage, stump or 71 Big Leaf Maple macrophyllum 18 wildlife. fair health, condition. X - walkway, co-dom - poor health, condition, Acer large decay cavity (3'xl'xl') in base. Not 72 Big Leaf Maple macrophyllum 20 viable. X - walkway, co-dom - poor health, condition, Acer large decay cavity (3'xl'xl') in base. Not 73 Big Leaf Maple macrophyllum 18 viable. Acer 74 Big Leaf Maple macrophyllum 15 X - walkway, fair health, condition X - garage, co-dom - poor health, condition, Acer one leader dead/broken, missing bark. Not 75 Big Leaf Maple macrophyllum 18 viable. Acer 76 Big Leaf Maple macrophyllum 29.5 X - poor health, condition - co-dom, buttress roots, large cavity in base (2'x8"x1'), broken 11 Mlandscape design OSS arborist services haileyamackay@gmail.com } S l u d i 0 206.849.4573 branches. retention optional but not recommended. I recommend stumping or removing and shifting the TESC pond closer to this location, away from S tree grove to be retained. Not viable. X - main house, poor health, structure - small Acer canopy, broken branches, missing bark. Not 77 Big Leaf Maple macrophyllum 9 viable. X - main house, poor health, structure - small Acer canopy, broken branches, missing bark. Not 78 Big Leaf Maple macrophyllum 16 viable. X - main house, co-dom (17, 13), poor Acer health, structure - broken branches/leader, 79 Big Leaf Maple macrophyllum 30 missing bark. Not viable. X - main house, poor health, structure - small Acer canopy, broken branches, missing bark. Not 80 Big Leaf Maple macrophyllum 16 viable. Initial replacement calculations based on the above inventory, adjusted for trees determined "not viable", indicate approximately 70% of trees surveyed are intended to be retained. This includes a total of 7 significant viable trees, one of which is planned for removal, equaling 85% retention of significant viable trees. Approximately 17 viable trees are planned for removal, of varying sizes, indicating approximately 42 replacement trees will be required per ECDC 23.10.080. This includes 3 replacement trees for one significant viable tree (exceeds 24" DBH, tree #6). This tree (#6) meets the >24.1" DBH threshold for an appraised "pay-in-leui" fee per ECDC 23.10.080.E, according to City of Edmonds plan review comment number 5 from June 30, 2022 this appraisal and fee may be waived as the retention percentage for significant viable trees on site is above 50%. While ECDC 23.10.080 lists minimum replacement sizes of 1.5" caliper for deciduous trees and minimum 6' height for conifers, I recommend a mix of smaller 2 and 5 gallon trees and a selection of 1.5" caliper and 6' height trees be used for replacement. The justification for this recommendation is based on the intention of the final landscape design - to restore the landscape surrounding the planned home and built features with a robust native understory appropriate to site conditions and to re-establish a native mixed deciduous/conifer canopy. Approaching the landscape design from a restoration perspective, I recommend using smaller size native stock combined with a selection of larger specimens to screen views to adjacent properties, with the intention to create a natural, successional landscape that will evolve over time and blend with existing areas to be protected. It is my opinion that the number of replacement trees, in addition to understory shrubs and groundcovers, will be primarily or entirely native to the Pacific Northwest and will meet or exceed the intentions set forth in ECDC 23.10.000 - .110. M landscape design arborist services haileyamackay@gmail.com } S l u d i 0 206.849.4573 In addition to the provisions of ECDC 23.10.070, the following protection guidelines should be followed for all trees to be protected during construction. Tree Protection Zone The Tree Protection Zone (TPZ) for all trees to be retained on site shall generally be within the dripline of the tree. The dripline, or Crown Spread Diameter (CSD), and minimum protection areas are described in the notes section for each tree to be retained in the table above. Chain -link or high visibility silt fencing shall be installed around the entire TPZ prior to commencing construction and shall remain in place to protect the TPZ until construction is completed. Per ECDC 23.10.070-C..."highly visible signs shall be installed on tree protection fencing spaced no further than 15 feet apart along the entirety of the protective tree fencing. Said sign must be approved by the director and shall state, at a minimum, "Tree and Soil Protection Area, Entrance Prohibited," and provide the city phone number for code enforcement to report violations". Additionally, I recommend installing high visibility silt fencing at the edge of pavement above the grove of trees to be retained near the street end, and around any large stumps to be kept in -tact during construction. Existing duff (leaf litter and mulch) within the TPZ shall be left in place and a minimum of 3" of coarse arborist mulch or wood chips shall be applied within the tree protection areas. No work shall be performed inside the TPZ, except for activities outlined below and routine maintenance, watering, or inspections by a qualified tree care professional. No materials, machinery or equipment shall be stored or stockpiled within the TPZ. No materials or liquids (other than uncontaminated water at a rate that prevents run-off) may be dumped within the Tree Protection Zone. Pruning If any roots greater than 1" diameter are encountered, damaged or torn, during excavation near a tree they are to be cut cleanly with sharp, sterile tools. Any roots discovered during excavation shall not be left exposed when conditions are hot and dry, they shall be covered or wrapped with heavy material such as canvas or burlap and kept moist. Any materials placed for exposed root protection, other than topsoil or mulch, shall be removed prior to replacing excavated soil. Areas of the canopy may require pruning to avoid damaging limbs during construction and to provide overhead clearance for a new structure. All pruning shall be performed by a certified arborist. Pruning shall not remove more than 25% of the tree's live canopy within a one-year period. If limbs, or any other part of the tree, are damaged during construction, a certified arborist shall be engaged to assess and mitigate the damage to the tree immediately. Mlandscape design OSS arborist services haileyamackay@gmail.com } S l u d i 0 206.849.4573 This report provides Nathan and Callie Angle detailed information about trees on their property for the purpose of successful tree retention during development, and to meet the City of Edmond's requirements for trees on private property. It is important to note that trees are dynamic, and their conditions can be affected by weather events and environmental changes. Therefore, this report exclusively warrants the conditions of the trees at the time of my evaluation on site. Additionally, Hailey Mak Mackay and Moss Studio cannot be held liable for any damage that results from the failure of any trees or their parts. Thank you. Hailey Mak Mackay, Landscape Designer ISA Certified Arborist #PN-8777A ISA Qualified Tree Risk Assessor 1X.MIL QUALIFICATIONS TREE RISK ASSESSMENT ♦ ♦ ♦ C` / \ 23.8" M \\ 14,7 1 -r- I ,'- I `♦A \ 1M \ 19.4"M- I I / 23.4" A \ 1■ ■ all 18"A� \. �I�'' / / ♦♦♦ 8' Ii— 8 In 69" 1 n1i_ 01 Nag°2634 j- 38)CONFIRM • ( )23.6"N� V8.8"M-�-_ I ` i I (37)20"DEC I i \` I ,/ ♦�' ml ` / 1A- •_ ♦ 4� I - -(35) CONFIRM / — ` \ ♦ ` _ ♦� z"`EC M ♦ I X I -_-�- (34)10"CON /� �\ � ■ (33) CONFIRM �C 1 (71)18" DEC - _ - _ -� \ � ? (77) 9" DEC 1 � � �� � (72)10" DEC ♦ �Z9 1 1_ \ (78)16" DEC (73)11" DEC 7 —L (74) 9" DEC �/ 10'TpT= 1N.351 23 STUMP // fly SSE SETBACK i (79) CONFIRM' / \ \ \\ \ e- - - ♦♦ 1 (80) CONFIRM237 232 01 L u ` - I U • `� _ , , - `�1 �i ♦ I (45) CONFIRM w (47) 18" DEC v ♦ CONFIRM 0 ♦ 6 ) 1-ii v � �- i♦� V ♦ ♦ — � (40) 11.5" M . I (48) 20" M N ✓ \ o X 1 1 00 (41) 9" DEC �/ rn (62) 15" DEC 1' n. 1 1 L.L a (61) 11" DEC 1• - / II ui _ I ? (60) 18"DEC ' �� \ (49 24" M , 01 1 � ♦\� / i ' (59) 16 DEC \ \ ' ' �� '(5■j 20" M - - `1� Z X _ - } < LU LU 1t' In. _(51)20"MI (63) 16" DEC _ A, Pjr • ` ♦ I \ X w�GI ��■ 1 (52) 13" M, / �\ I I • (64) 10" DEC J,►Vll \l / (s�18"D C // % I I W (65) 16' DEC / /� T'A' ml `♦ / - 1,i i I �\ (66) 11" DEC 7)20"D C1 // I� ♦ w ♦ (53) 25" Ml (67) 12" DEC le■ /41 / � 1 ` (54) 30" M I (68) 10" DEC' � - - " (56) 2 �� (55) 12" CON / 7-i- IL in ? / 1/ /L% I _ I ♦♦ ♦/� ` ��z a ` v♦♦ \ ♦.� / / (75) 10" DEC 1 - - - -` - . ` / ♦ / 24' m• \ ` \ \♦� (76) 20" DEC ' �- ' %` I ♦ \ 16' min. �♦ J z3 - - - - - , ♦ m►n. mi ♦♦ \ •1 (X) optional - retention 4 - 1 24�' ♦ 1 1 1 �\ not recommended (02) DBL 1517" C `` 4 ♦ , ♦ ♦� ' (03)18" i .235 n`1 ( 6)16"DEC' • , `! •lop V Alt , 1 ♦ I � (08) 24" M \�\ ■ / / (26) 10" CON t ``♦ . 1 it 1 \�- �i� `♦ (27)9"CONIt I _ Y , ♦ , A ■ ■ 28) 12" CON \ 1 , ♦ , (23) 48" D �• •_ 25' SIDE SETBACK (o5)1a" c, 1 , a / ♦ — ♦6' — ( - ' ♦ 16_ (MIN. 10', TOTAL MIN. 35') ♦ 0113 tON \ , ice`\♦ I I ` I ♦ • • 1 ,' ♦ (09)18" CON 9� ♦ ♦ 1 / ♦♦ ` \ \ I 7 ♦ `1 1 ♦ _ \ 23 ♦• \� ` (14)1 "CON 41 13.min. ♦ O 8 ♦ T (10)10" DEC ♦ _may- I 1 1 ♦ , , ` / ` 1 ■ U T 7 \ 8' in `♦ 1 I \ ,- �` 1 - ,- T ♦ (29)13"CON Q "CON ,--i ♦ �'\' ♦ � 'li -/` / • m I --o �♦ / 11 1 1 1 ♦ • - - �2)13"CON 9 _ 1 I♦ .r y , a ♦ I 1 �O I I ,- �\ / ♦ /,'\ 14~��� / i N / \` 1 ,� / 16' in. •i z, \ / 1 I ♦ 1 I 17 11" CON 1 ` (24) 12" CON ' LL ♦ ,� - ( ) �(�22)12CON ,♦- ♦ 5 in. 4.3 (12) 10" CON (16) 11" CON ' (19) 10" DEC I\ ` - _ ' _ • - ` - - ,' (30) 24" DEC _ `� �' (31) 24" DEC' - (13) 11" CON (15) 10" CON , (18) 24" DEC ` - - I I I II — 11_^II SITE PLAN T o _ co o - o C� Y U Q m 2 o U � 0 CV @ CD -p N (2) O N o W W Z O > w Ow cn Z wwQ 0' Q- -j � a_ a_