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HomeMy WebLinkAboutTR-TREE-2018-09-25-WA ForestryFORESTRY AND VEGETATION MANAGEMENT SPECIALISTS WFCI 3601943-1 723 FAX 3601943-4 1 28 1919 Yelm Hwy SE, Suite C Olympia, WA 98501 URBANIRURAL FORESTRY TREE APPRAISAL HAZARD TREE ANALYSIS RIGHT-OF-WAYS VEGETATION MANAGEMENT ENVIRONMENTAL STUDIES CONTRACT FORESTERS Member of International Society of Arboriculture and Society of American Foresters - Tree Protection Plan - SUMPTER PROPERTY 14204 156TH Ave. SE Renton WA 98509 Prepared for: Don Sumpter Prepared by: Washington Forestry Consultants, Inc. Date of Report: September 25, 2018 Introduction The project proponent is planning to construct a residential subdivision on 2.82 acres at 14204 156th Ave. SE in Renton. The proponent has retained WFCI to: • Evaluate and inventory all trees on the site pursuant to the requirements of the City of Renton Tree Protection Ordinance. • Make recommendations for retention of significant trees, along with required protection and cultural measures. Observations Methodology WFCI has evaluated trees 6 inches diameter at breast height (DBH) and larger in the proposed project area, and assessed their potential to be incorporated into the new project. All trees are marked with a blue number at the base corresponding to the table in Attachment 3. The tree evaluation phase used methodology developed by Nelda Matheny and Dr. James Clark in their 1998 publication Trees and Development: A Technical Guide to Preservation of Trees during Land Development. Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 2 Site Description The site is a mostly flat, residential property in a suburban region of Renton. There is one house on the site, which was built in 1954. Two other outbuildings occur to the east of the main building. The property is bordered to the west by 156th Ave. SE to the west, residential properties to the north and south, and an undeveloped parcel to the east. Soil Depth and Productivity According to the Natural Resource Conservation Service web soil survey; there is one soil type on the parcel, the Alderwood gravelly sandy loam. Alderwood gravelly sandy loam is a moderately deep, moderately well drained soil found on glacial till plains. It is formed in ablation till overlying basal till. A weakly cemented hardpan is at a depth of 20 to 40 inches. Permeability is moderately rapid above the hardpan and very slow in the pan. Available water capacity is low. The effective rooting depth for trees is 20-40 inches. A perched seasonal high water table is at a depth of 18-36 inches from November to March. The potential for windthrow of trees is moderate under normal conditions. New trees require irrigation for establishment. In areas where grading brings the hardpan nearer to the surface, the hardpan must be fractured under new trees to provide soil volume for root development and to improve drainage around the tree. Existing Tree Conditions There are a total of 213 significant trees in the project area. Tree species include Douglas-fir (Pseudotsuga menziesii), western redcedar (Thuja plicata), bigleaf maple (Acer macrophyllum), Pacific madrone (Arbutus menziesii), black cottonwood (Populus trichocarpa), flowering cherry (Prunus serotina), Scouler’s willow (Salix scouleriana), and red alder (Alnus rubra). Tree condition ranges from ‘Dead’ to ‘Good,’ with the majority of trees described in the dominant and codominant crown class described as being in ‘Fair’ condition or better. Tree size ranges from 6 to 40 inches in diameter at breast height (DBH). Table 1: Summary of Trees in Project Area Species DBH Range (in) Total # of Trees # of Trees in Poor Health* # of Healthy Trees Species Composition of Stand Red Alder 8 - 11 4 4 0 1.9% Bigleaf Maple 9 - 12 3 1 2 1.4% Pacific Madrone 8 - 14 3 0 3 1.4% Black Cottonwood 10 - 22 16 6 10 7.5% Cherry 8 1 0 1 0.5% Douglas-fir 6 - 40 158 43 115 74.2% Bitter Cherry 7 – 12.5 6 4 2 2.8% Western Redcedar 8 - 15 16 0 16 7.5% Scouler’s Willow 6 – 13.5 6 6 0 2.8% Sum 6-46 213 64 149 100% *Includes trees in ‘Poor’ or ‘Very Poor’ Condition Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 3 Understory vegetation is dense throughout most of the project area. Blackberry (Rubus armeniacus) is particularly abundant, forming dense monocultures in many areas. Other understory plants include salal (Gaultheria shallon), English ivy (Hedera helix), English holly (Ilex aquifolium), Indian plum (Oemleria cerasiformis), ocean spray (Holodiscus discolor), creeping Oregon grape (Berberis repens), snowberry (Symphoricarpos albus), grasses and broadleaved weeds. Photo 1. View of project area looking west. Off-Site Impacts Some off-site trees will need to be protected from the impacts of construction grading activity. Tree protection fencing will need to be erected along the southern and eastern limits of the project area to protect off-site trees (Attachment 2) Discussion Potential for Tree Retention The best potential tree retention areas are along the southern edge of the property and in the western portion of the project area near 156th Ave. SE. In particular, a row of young, healthy western redcedar trees on the southern property line are suitable for retention. The remainder of the site will be intensively developed and graded for new homes, streets and utilities. Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 4 Photo 2. View of trees along southern property line looking southwest. Tree Density Calculations Title 4-4-130 of the Renton Municipal Code calls for 30% of all healthy significant trees in buildable areas to be retained on the project, or where the required number cannot be retained, replacement trees are to be planted. The following is a summary of the required tree retention: Total Number of Significant Trees on Site 213 trees Trees Excluded from Retention Calculation: Trees that are Dead, Diseased, or Dangerous <64 trees> Trees in Proposed Public Streets <13 trees> Number of Healthy, Significant Trees in Buildable Area: 136 trees Required Tree Retention: 30% of healthy significant trees in buildable area: 41 trees There are 129 healthy, significant trees in the buildable area of the site. At least 41 of these trees need to be retained to meet the City of Renton Code. The proposed plan retains 36 trees outside of the critical areas and buffers, a deficit of 6 trees When the required number of trees cannot be retained, 12 caliper-inches of replacement trees must be replanted for each tree removed in excess of this minimum requirement. All deciduous replacement trees shall be 2 in. caliper and conifers shall be at least 6 ft. tall at the time of planting. A total of 36 trees ( 6∗122 ) will be required to replace the 6-tree shortfall outlined in this plan. Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 5 Up to 50% of the replacement trees can be planted on lots. The remaining 18 trees can be planted in park and green space tracts. We recommend planting Douglas-fir in open areas, and western redcedar in areas with partial shade. Trees in the willow family (Salicaceae), and the alder (Alnus), and plane tree (Platanus) genera may not be used to fulfill the tree replacement requirement. Recommendations Tree Protection Measures Trees to be saved must be protected during construction by temporary chain-link fence (Attachment 7) located at the edge of the root protection zone (RPZ). The RPZ shall be the dripline of the stand of trees, or the limits of construction of the tree tract. Placards shall be placed on the fencing every 50 feet indicating the words, "NO TRESPASSING - Protected Trees". The individual tree RPZ is the dripline (6 feet minimum), unless otherwise delineated by WFCI in the field and described in the attached tree list (Attachment 3). Tree protection fences should be placed around the edge of the root protection zone (RPZ). The fence should be erected after logging but prior to the start of clearing. The fences should be maintained until the start of the landscape installation. There should be no equipment activity (including rototilling) within the root protection zone. No irrigation lines, trenches, or other utilities should be installed within the RPZ. Cuts or fills should impact no more than 20% of a tree’s root system. If topsoil is added to the root zone of a protected tree, the depth should not exceed 2 inches of a sandy loam or loamy fine sand topsoil and should not cover more than 20% of the root system. If roots are encountered outside the RPZ during construction, they should be cut cleanly with a saw and covered immediately with moist soil. Noxious vegetation within the root protection zone should be removed by hand. If a proposed save tree must be impacted by grading or fills more than allowed for by WFCI in the tree list, then the tree should be re-evaluated by WFCI to determine if the tree can be saved with mitigating measures, or if the tree should be removed. Pruning and Thinning All individual trees to be saved near or within developed areas should have their crowns raised to provide a minimum of 8 feet of ground clearance over sidewalks and landscape areas, 15 feet over parking lots or streets, and at least 10 feet of building clearance. All pruning should be done according to the ANSI A300 standards for proper pruning, and be completed by an International Society of Arboriculture Certified Arborist®, or be supervised by a Certified Arborist®. Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 6 Hazard Tree Inspection Several trees were found to be potentially hazardous. A recently constructed housing development to the north of the property has impacted the roots of some trees along the northern property line. Additionally, a patch of laminated root rot (Phellinus sulphurascens) occurs in this area, further compromising the stability of these trees. All ‘poor’ condition trees in this area should be removed as soon as possible. The remaining trees should be removed during site clearing. Photo 3. View of impacted and diseased trees near the northern property line. A second inspection of the save trees should occur after the completion of grading to determine if any trees were damaged during grading activity. Impacted, Diseased Roots Diseased, Dead, and Dying Trees Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 7 Conclusions and Timeline for Activity 1. 36 significant trees are proposed to be retained on the site. 2. The final, approved tree protection plan map should be included in the construction drawings for bid and construction of the project and should be labeled as such. 3. Stake and heavily flag the clearing limits. 4. Contact WFCI to attend pre-job conference and discuss tree protection issues with contractors. WFCI can verify all trees to be saved and/or removed are adequately marked for retention. 5. Complete logging. Complete necessary hazard tree removals and invasive plant removals from the tree protection areas. No equipment should enter the tree protection areas during logging. 6. Install tree protection fences along the 'limits of construction'. The fences should be located at the limits of construction or at the dripline of the save tree or as otherwise specified by WFCI. Maintain fences throughout construction. 7. Complete clearing of the project. 8. Do not excavate stumps within 10’ of trees to be saved. These should be individually evaluated by WFCI to determine the method of removal. 9. Complete all necessary pruning on save trees or stand edges to provide at least 8’ of ground clearance near sidewalks and trails, and 15’ above all driveways or access roads. 10. Complete grading and construction of the project. 11. Contact WFCI to inspect the tree protection areas after grading. 12. All save trees within reach of targets should be inspected annually for 2 years by a qualified professional forester retained by the homeowners association, and bi-annually thereafter. The purpose of these inspections is to identify trees that develop problems due to changing micro-site conditions and to prescribe cultural care or removal. Summary The City of Renton Municipal Code calls for 30% of the significant trees be retained on the buildable area of the site or mitigated for. Based on current site plans, thirty-six existing trees are proposed for retention. This falls short of the minimum 30% requirement by 6 trees. Therefore, 36 trees will need to be planted on the site to meet this requirement. Please give us a call if you have further questions. Respectfully submitted, Washington Forestry Consultants, Inc. Galen M. Wright, ACF, ASCA Riley Stark, Professional Forester ISA Bd. Certified Master Arborist PN-129BU ISA Certified Arborist®, Certified Forester No. 44 Municipal Specialist, PN-7780AM ISA Tree Risk Assessor Qualified ISA Tree Risk Assessor Qualified Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 8 Attachment 1. Aerial Photo of 14204 156TH Ave. SE (2017 King County iMap) N Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 9 Attachment 2. Site Plan/Tree Map (2 Pages) Project Area Boundary Location of Tree to Retain Location of Tree to Remove Location of Tree Protection Fencing 8 7 6 5 4 1 2 3 9 10 12 11 12 14 13 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 62 55 56 63 64 65 66 34 33 32 54 51 53 52 36 35 39 38 37 50 49 48 43 - 47 42 41 40 215 214 213 57 59 58 60 61 N Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 10 Project Area Boundary Location of Tree to Retain Location of Tree to Remove Location of Tree Protection Fencing 70 71 72 73 74 75 76 78 79 80 212 211 205 210 209 208 207 206 202 68 207 69 67 77 81 82 83 84 85 86 204 201 200 186 187 185 182 99 103 102 101 100 93 92 91 90 89 96 98 97 95 94 88 87 132 113 112 109 110 121 111 108 107 106 105 104 125 126 129 123 124 122 120 119 118 116 115 114 117 133 131 130 165 164 163 162 139 138 136 151 137 135 134 154 153 152 147 146 145 148 149 150 144 143 142 141 140 171 170 168 169 179 180 181 167 166 161 158 157 159 160 156 155 188 184 178 177 183 176 174 175 172 173 133 203 199 198 196 197 195 194 193 191 192 190 189 127 128 N Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 11 Attachment 3. List of Trees at 14204 156th Ave. SE in Renton (9 Pages) Tree # Species DBH (in.) Condition Save Potential Based on Tree Condition Alone? Yes or No Project Plan - Save or Remove? Minimum Root Protection Zone (ft. radius, direction) Comment 1 Douglas-fir 37 Good Yes Save 24N In Landscape Tract 2 Douglas-fir 17 Fair Yes Remove 12E 3 Douglas-fir 17 Fair Yes Remove 12S In Proposed ROW 4 Flowering Cherry 8 Fair Yes Remove 6E Dwarf Variety, on ROW line 5 Douglas-fir 18 Fair Yes Remove 14EW On ROW line 6 Douglas-fir 14 Fair Yes Remove 10E On ROW line 7 Douglas-fir 22 Good Yes Remove 18E On ROW line 8 Douglas-fir 27 Fair Yes Remove 20E On ROW line 9 Douglas-fir 32 Good Yes Remove 22N In Proposed ROW 10 Douglas-fir 29 Good Yes Remove 21NE In Proposed ROW 11 Douglas-fir 21.5 Fair Yes Remove 18 Off-Site 12 Douglas-fir 34 Good Yes Remove 24N 13 Douglas-fir 33 Good Yes Remove 24SW 14 Douglas-fir 30 Good Yes Remove 24N 15 Douglas-fir 37 Good Yes Remove 26 16 Douglas-fir 37 Good Yes Remove 26 17 Pacific Madrone 11 Fair Yes Remove 14EW 18 Douglas-fir 22 Good Yes Remove 18N 19 Douglas-fir 40 Good Yes Remove 32 20 Douglas-fir 24 Fair Yes Remove 18S 21 Douglas-fir 24 Fair Yes Remove 18W 22 Douglas-fir 20 Fair Yes Remove 18 23 Douglas-fir 28 Fair Yes Remove 20 Tree House in it 24 Douglas-fir 31 Good Yes Remove 26 25 Douglas-fir 12.5 Fair Yes Remove 8 Intermediate Crown Position 26 Douglas-fir 13, 20 Fair Yes Remove 18S Wires in it 27 Douglas-fir 19 Fair Yes Remove 14E Wires in it 28 Douglas-fir 17 Fair Yes Remove 12N Board on it 29 Douglas-fir 22 Good Yes Remove 14S 30 Douglas-fir 13 Poor - Low Live No Remove N/A Board on it Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 12 Tree # Species DBH (in.) Condition Save Potential Based on Tree Condition Alone? Yes or No Project Plan - Save or Remove? Minimum Root Protection Zone (ft. radius, direction) Comment Crown Ratio 31 Douglas-fir 22 Poor - In Decline No Remove N/A 32 Douglas-fir 23 Poor - In Decline No Remove N/A 33 Douglas-fir 11 Poor - Suppressed No Remove N/A 34 Douglas-fir 11 Poor - Suppressed No Remove N/A 35 Douglas-fir 22 Fair Yes Remove 16S 36 Douglas-fir 15 Poor - In Decline No Remove N/A 37 Douglas-fir 18 Fair Yes Remove 14 Not Numbered 38 Douglas-fir 12 Dead No Remove N/A Not Numbered 39 Douglas-fir 10 Dead No Remove N/A 40 Douglas-fir 18 Poor - Stem Decay No Remove N/A 41 Douglas-fir 19 Fair Yes Remove 13 42 Douglas-fir 18 Fair Yes Remove 14 43 Douglas-fir 12 Fair Yes Remove 10N 44 Douglas-fir 17 Fair Yes Remove 13W 45 Bigleaf Maple 12 Good Yes Remove 10NE 46 Douglas-fir 18 Fair Yes Remove 16S 47 Douglas-fir 15 Fair Yes Remove 12S 48 Douglas-fir 25 Fair Yes Remove 16S 49 Douglas-fir 17 Fair Yes Remove 12W 50 Douglas-fir 21 Fair Yes Remove 16N 51 Douglas-fir 16 Fair Yes Remove 10S 52 Douglas-fir 18 Fair Yes Remove 12N 53 Douglas-fir 12 Very Poor - Mostly Dead No Remove N/A 54 Douglas-fir 31 Good Yes Remove 24 55 Douglas-fir 19 Poor - Stem Defect No Save N/A 56 Douglas-fir 11 Poor - Suppressed No Save N/A 57 Douglas-fir 12 Fair Yes Save 8S In Lot 3 Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 13 Tree # Species DBH (in.) Condition Save Potential Based on Tree Condition Alone? Yes or No Project Plan - Save or Remove? Minimum Root Protection Zone (ft. radius, direction) Comment 58 Douglas-fir 25 Good Yes Save 18N In Lot 3 59 Douglas-fir 11 Poor - Suppressed No Save N/A 60 Douglas-fir 17 Fair Yes Save 12S In Lot 3 61 Douglas-fir 31 Good Yes Save 24NE In Lot 3 62 Douglas-fir 14 Fair Yes Save 10S In Lot 4 63 Bitter Cherry 9, 9 Very Poor - Mostly Dead No Save N/A 64 Douglas-fir 31 Good Yes Remove 24NE 65 Black Cottonwood 16 Poor - Stem Defect, Decline No Save N/A 66 Douglas-fir 18 Fair Yes Save 12S In Lot 4 67 Douglas-fir 23 Good Yes Save 15N In Lot 4 68 Douglas-fir 19 Fair Yes Save 14S In Lot 4 69 Douglas-fir 20 Fair Yes Save 14S In Lot 4 70 Western Redcedar 12 Good Yes Save 12N In Lot 5 71 Western Redcedar 13 Good Yes Save 13N In Lot 5 72 Western Redcedar 15 Good Yes Save 15N In Lot 5 73 Western Redcedar 11 Good Yes Save 11N In Lot 5 74 Western Redcedar 13 Good Yes Save 13N In Lot 5 75 Western Redcedar 14 Good Yes Save 14N In Lot 5 76 Western Redcedar 10 Good Yes Save 10N In Lot 5 77 Western Redcedar 13 Good Yes Save 13N In Lot 5 78 Western Redcedar 16 Good Yes Save 16N In Lot 5 79 Western Redcedar 12 Good Yes Save 12N In Lot 5 80 Western Redcedar 7, 7 Good Yes Save 11N In Lot 5 81 Western Redcedar 8 Good Yes Save 8N In Lot 5 Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 14 Tree # Species DBH (in.) Condition Save Potential Based on Tree Condition Alone? Yes or No Project Plan - Save or Remove? Minimum Root Protection Zone (ft. radius, direction) Comment 82 Western Redcedar 9 Good Yes Save 9N In Lot 5 83 Western Redcedar 11 Good Yes Save 11N In Lot 5 84 Western Redcedar 11 Good Yes Save 11N In Lot 6 85 Western Redcedar 11 Good Yes Save 11N In Lot 6 86 Douglas-fir 10 Fair Yes Save 8W Intermediate Crown Position 87 Black Cottonwood 16 Fair Yes Remove 12 88 Black Cottonwood 16 Poor - Stem Defect No Remove N/A 89 Black Cottonwood 14 Fair Yes Remove 12 90 Bitter Cherry 9 Poor - Stem Defect, Decline No Save N/A 91 Douglas-fir 12, 7 Fair Yes Save 12N In Lot 6 92 Douglas-fir 11 Fair Yes Save 10N In Lot 6 93 Douglas-fir 11 Fair Yes Save 10N In Lot 6 94 Black Cottonwood 15 Very Poor - Major Stem Defect No Remove N/A 95 Douglas-fir 11 Poor - Suppressed No Save N/A 96 Bigleaf Maple 9 Fair Yes Save 8N In Lot 6 97 Douglas-fir 10 Poor - No Top No Save N/A Suppressed, in Road Footprint 98 Bigleaf Maple 5, 6, 7 Poor - Stump Sprouts No Save N/A In Road Footprint 99 Black Cottonwood 22 Fair Yes Remove 18 In Road Footprint 100 Scouler's Willow 7 Very Poor - Stem No Remove N/A In Road Footprint Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 15 Tree # Species DBH (in.) Condition Save Potential Based on Tree Condition Alone? Yes or No Project Plan - Save or Remove? Minimum Root Protection Zone (ft. radius, direction) Comment Decay, Decline 101 Black Cottonwood 12 Fair Yes Remove 10N In Road Footprint 102 Black Cottonwood 10 Fair Yes Remove 8E In Road Footprint 103 Black Cottonwood 10 Poor - whip No Remove N/A In Road Footprint 104 Black Cottonwood 14 Fair Yes Remove 12SW In Road Footprint 105 Douglas-fir 10, 7 Fair Yes Remove 8S In Road Footprint 106 Douglas-fir 17 Fair Yes Remove 14 In Road Footprint 107 Douglas-fir 9 Fair Yes Remove 8 In Road Footprint 108 Douglas-fir 12 Fair Yes Remove 10E In Road Footprint 109 Douglas-fir 19 Good Yes Remove 14N In Road Footprint 110 Douglas-fir 12 Fair Yes Remove 10S In Road Footprint 111 Bitter Cherry 3, 3, 4, 2, 2 Poor - Dead Stems No Save N/A Like a 7 in. DBH tree 112 Red Alder 5, 5 Poor - In Decline No Remove N/A Like an 8 in. DBH tree 113 Douglas-fir 21 Good Yes Remove 17N 114 Pacific Madrone 4, 6 Good Yes Remove 10S Like an 8 in. DBH tree 115 Douglas-fir 8.5, 6 Fair Yes Remove 7W 116 Black Cottonwood 14 Poor - Stem Defect, Decay No Remove N/A 117 Douglas-fir 16 Fair Yes Remove 13 118 Scouler's Willow 7, 7, 7, 7, 7 Poor - 4 dead stems No Remove N/A 119 Red Alder 9, 9 Poor - 1 bad stem, dead top No Remove N/A Like an 11 in. DBH Tree 120 Douglas-fir 20 Good Yes Remove 17 121 Red Alder 8 Poor - No Remove N/A Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 16 Tree # Species DBH (in.) Condition Save Potential Based on Tree Condition Alone? Yes or No Project Plan - Save or Remove? Minimum Root Protection Zone (ft. radius, direction) Comment Stem Defect 122 Red Alder 8 Poor - Stem Decay No Remove N/A 123 Douglas-fir 18 Fair Yes Remove 14N 124 Douglas-fir 19 Fair Yes Remove 15N 125 Douglas-fir 10 Fair Yes Remove 8 Intermediate Crown Position 126 Douglas-fir 10.5 Poor - Low Live Crown Ratio No Remove N/A 127 Douglas-fir 17.5 Fair Yes Save 14N In Lot 8 128 Douglas-fir 14.5 Fair Yes Save 12N In Lot 8 129 Douglas-fir 14 Fair Yes Save 10S In Lot 8 130 Douglas-fir 7 Poor - No Top No Save N/A 131 Douglas-fir 8 Fair Yes Save 6 In Lot 8 132 Douglas-fir 22 Fair Yes Save 18W In Lot 8 133 Bitter Cherry 12.5 Fair Yes Remove 12 134 Scouler's Willow 8 Very Poor - Mostly Dead No Remove N/A 135 Scouler's Willow 13, 5 Poor - Stem Decay No Remove N/A 136 Bitter Cherry 10 Fair Yes Remove 11W 137 Bitter Cherry 7 Poor - Stem Defect No Remove N/A 138 Scouler's Willow 12, 12, 12 Poor - Stem Decay No Remove N/A 139 Douglas-fir 6.5 Fair Yes Remove 6 140 Douglas-fir 32 Good Yes Remove 26W Off-Site - Protect 141 Douglas-fir 26 Fair Yes Remove 18SW 142 Douglas-fir 14 Fair Yes Remove 12SW Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 17 Tree # Species DBH (in.) Condition Save Potential Based on Tree Condition Alone? Yes or No Project Plan - Save or Remove? Minimum Root Protection Zone (ft. radius, direction) Comment 143 Douglas-fir 19 Fair Yes Remove 14SW 144 Douglas-fir 23.5 Fair Yes Remove 18SW 145 Douglas-fir 10 Poor - Suppressed No Remove N/A 146 Douglas-fir 13 Fair Yes Remove 10S 147 Douglas-fir 23 Fair Yes Remove 16S 148 Douglas-fir 21 Fair Yes Remove 16S 149 Douglas-fir 25 Fair Yes Remove 18SW 150 Douglas-fir 19 Fair Yes Remove 16S 151 Douglas-fir 15 Fair Yes Remove 12SW 152 Douglas-fir 21 Fair Yes Remove 16S 153 Douglas-fir 22 Fair Yes Remove 17S 154 Douglas-fir 30 Very Poor - Leaning, 4 tops No Remove N/A 155 Scouler's Willow 6 Poor - whip No Remove N/A 156 Douglas-fir 32 Poor - In Decline No Remove N/A 157 Black Cottonwood 14 Fair Yes Remove 12 158 Black Cottonwood 12, 12 Poor - Stem Decay No Remove N/A Not Numbered 159 Black Cottonwood 14, 9 Fair Yes Remove 13 1 bad stem 160 Black Cottonwood 16, 12 Fair Yes Remove 13 1 bad stem 161 Douglas-fir 15, 10 Poor - Stem Decay No Remove 12 1 dead stem, in Road footprint 162 Douglas-fir 13 Poor - Leaning No Remove N/A 163 Douglas-fir 12 Fair Yes Remove 9NE 164 Douglas-fir 14 Fair Yes Remove 11SW 165 Douglas-fir 11 Fair Yes Remove 10S 166 Douglas-fir 12 Poor - Dead Tops No Remove N/A Suppressed 167 Douglas-fir 19 Poor - In Decline No Remove N/A Laminated Root Rot 168 Douglas-fir 20 Very Poor - Mostly Dead No Remove N/A Laminated Root Rot Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 18 Tree # Species DBH (in.) Condition Save Potential Based on Tree Condition Alone? Yes or No Project Plan - Save or Remove? Minimum Root Protection Zone (ft. radius, direction) Comment 169 Douglas-fir 12 Poor - Root Rot No Remove N/A Laminated Root Rot 170 Douglas-fir 9 Fair Yes Remove 8 171 Douglas-fir 7 Poor - 2 tops, stem decay No Remove N/A In Road Footprint 172 Douglas-fir 17 Poor - In Decline No Remove N/A In Road Footprint 173 Douglas-fir 10 Poor - Whip No Remove N/A In Road Footprint 174 Douglas-fir 6 Very Poor - Mostly Dead No Remove N/A Suppressed 175 Douglas-fir 29, 19 Very Poor - Mostly Dead No Remove N/A 1 dead stem 176 Douglas-fir 14 Poor - In Decline No Remove N/A In Road Footprint 177 Douglas-fir 8 Very Poor - Mostly Dead No Remove N/A Suppressed, in Road Footprint 178 Douglas-fir 12 Poor - In Decline No Remove N/A In Road Footprint 179 Douglas-fir 23 Fair Yes Remove 18S In Road Footprint 180 Douglas-fir 14 Poor - In Decline No Remove N/A In Road Footprint 181 Douglas-fir 13 Very Poor - Mostly Dead No Remove N/A No top, in Road Footprint 182 Black Cottonwood 16 Fair Yes Remove 14 Not Numbered, in Road Footprint 183 Douglas-fir 13 Fair Yes Remove 10S In Road Footprint 184 Douglas-fir 16 Good Yes Remove 12 185 Douglas-fir 21 Good Yes Remove 16 186 Pacific Madrone 8, 8, 10 Good Yes Remove 16 187 Douglas-fir 10 Very Poor - Mostly Dead No Remove N/A Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 19 Tree # Species DBH (in.) Condition Save Potential Based on Tree Condition Alone? Yes or No Project Plan - Save or Remove? Minimum Root Protection Zone (ft. radius, direction) Comment 188 Douglas-fir 24 Fair Yes Remove 17S 189 Douglas-fir 13 Fair Yes Remove 10NE 190 Douglas-fir 18 Fair Yes Remove 12S 191 Douglas-fir 13 Fair Yes Remove 10W 192 Douglas-fir 8 Fair Yes Remove 6N Intermediate Crown Position 193 Douglas-fir 31 Good Yes Remove 21S 194 Douglas-fir 11 Very Poor - Suppressed No Remove N/A 195 Douglas-fir 9 Fair Yes Remove 6E 196 Douglas-fir 20 Fair Yes Remove 16 197 Douglas-fir 14 Fair Yes Remove 10N 198 Douglas-fir 24 Poor - Impacted Roots No Remove N/A 199 Douglas-fir 15 Fair Yes Remove 12 200 Douglas-fir 22 Fair Yes Remove 17E 201 Douglas-fir 12 Very Poor - Stem Defect No Remove N/A Suppressed 202 Douglas-fir 25 Good Yes Remove 20N 203 Douglas-fir 12.5 Very Poor - Dead Top No Remove N/A 204 Douglas-fir 14 Fair Yes Remove 10S 205 Douglas-fir 34 Poor - Impacted Roots No Remove N/A 206 Douglas-fir 28 Good Yes Remove 20 207 Douglas-fir 20 Fair Yes Remove 14E 208 Douglas-fir 11 Poor - Sparse Foliage No Remove N/A Intermediate Crown Position 209 Douglas-fir 20 Poor - Sparse Foliage No Remove N/A 210 Douglas-fir 20 Fair Yes Remove 16N 211 Douglas-fir 12 Poor - Sparse Foliage No Remove N/A 212 Douglas-fir 32 Poor - Impacted No Remove N/A Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 20 Tree # Species DBH (in.) Condition Save Potential Based on Tree Condition Alone? Yes or No Project Plan - Save or Remove? Minimum Root Protection Zone (ft. radius, direction) Comment Roots 213 Douglas-fir 9 Poor - Suppressed No Remove N/A 214 Douglas-fir 16.5 Fair Yes Remove 12S 215 Douglas-fir 22 Fair Yes Remove 15W Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 21 Attachment 4. . Individual Tree Rating Key for Tree Condition RATING SYMBOL DEFINITION Very Good VG • Balanced crown that is characteristic of the species • Normal lateral and terminal branch growth rates for the species and soil type • Stem sound, normal bark vigor • No root problems • No insect or disease problems • Long-term, attractive tree Good G • Crown lacking symmetry but nearly balanced • Normal lateral and terminal branch growth rates for the species and soil type • Minor twig dieback O.K. • Stem sound, normal bark vigor • No root problems • No or minor insect or disease problems – insignificant • Long-term tree Fair F • Crown lacking symmetry due to branch loss • Slow lateral and terminal branch growth rates for the species and soil type • Minor and major twig dieback – starting to decline • Stem partly unsound, slow diameter growth and low bark vigor • Minor root problems • Minor insect or disease problems • Short-term tree 10-30 years RATING SYMBOL DEFINITION Poor P • Major branch loss – unsymmetrical crown • Greatly reduced growth • Several structurally import dead or branch scaffold branches • Stem has bark loss and significant decay with poor bark vigor • Root damage • Insect or disease problems – remedy required • Short-term tree 1-10 years Very Poor VP • Lacking adequate live crown for survival and growth • Severe decline • Minor and major twig dieback • Stem unsound, bark sloughing, previous stem or large branch failures, very poor bark vigor • Severe root problems or disease • No or minor insect or disease problems • Mortality expected within the next few years Dead DEAD • Dead Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 22 Cultural Care Needs: ABBRV. ACTIVITY DESCRIPTION CC Crown Cleaning Pruning of dead, dying, diseased, damaged, or defective branches over 1/2 inch in diameter –includes removal of dead tops CT Crown Thinning Pruning of branches described in crown cleaning, plus thinning of up to 20% of the live branches over ½ inch diameter. Branch should be 1/3 to ½ the diameter of the lateral branch. Thinning should be well distributed throughout crown of tree, and should release healthy, long-term branches. RC Crown Reduction Reduction of the crown of a tree by pruning to lateral branches. Generally used to remove declining branches or to lighten end weight on long branches. CR Crown Raising Pruning of lower branches to remove deadwood or to provide ground or building clearances. RMV Remove Remove tree due to decline or hazardous conditions that cannot be mitigated by pruning. RS Remove Sprouts Remove basal sprouts from stem of tree. Rep Replace Tree is small – is in decline or dead. Replace with suitable tree species. HT Hazard Tree Tree is hazardous and cannot be mitigated by pruning. Recommendation is to remove tree. None No Work No work necessary at this time. Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 23 Attachment 5. Description of Tree Evaluation Methodology The evaluation of the tree condition on this site included the visual assessment of: 1. Live-crown ratio, 2. Lateral and terminal branch growth rates, 3. Presence of dieback in minor and major scaffold branches and twigs, 4. Foliage color, 5. Stem soundness and other structural defects, 6. Visual root collar examination, 7. Presence of insect or disease problems. 8. Windfirmness if tree removal will expose this tree to failure. In cases where signs of internal defect or disease were suspected, a core sample was taken to look for stain, decay, and diameter growth rates. Also, root collars were exposed to look for the presence of root disease. In all cases, the overall appearance of the tree was considered relative to its ability to add value to either an individual lot or the entire subdivision. Also, the scale of the tree and its proximity to both proposed and existing houses was considered. Lastly, the potential for incorporation into the project design is evaluated, as well as potential site plan modifications that may allow otherwise removed tree(s) to be both saved and protected in the development. Trees that are preserved in a development must be carefully selected to make sure that they can survive construction impacts, adapt to a new environment, and perform well in the landscape. Healthy, vigorous trees are better able to tolerate impacts such as root injury, changes in soils moisture regimes, and soil compaction than are low vigor trees. Structural characteristics are also important in assessing suitability. Trees with significant decay and other structural defects that cannot be treated are likely to fail. Such trees should not be preserved in areas where damage to people or property could occur. Trees that have developed in a forest stand are adapted to the close, dense conditions found in such stands. When surrounding trees are removed during clearing and grading, the remaining trees are exposed to extremes in wind, temperature, solar radiation, which causes sunscald, and other influences. Young, vigorous trees with well-developed crowns are best able to adapt to these changing site conditions. Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 24 Attachment 6. Glossary of Forestry and Arboricultural Terminology DBH: Diameter at Breast Height (measured 4.5 ft. above the ground line on the high side of the tree). Live Crown Ratio: Ratio of live foliage on the stem of the tree. Example: A 100’ tall tree with 40 feet of live crown would have a 40% live crown ratio. Conifers with less than 30% live crown ratio are generally not considered to be long-term trees in forestry. Crown: Portion of a trees stem covered by live foliage. Crown Position: Position of the crown with respect to other trees in the stand. Dominant Crown Position: Receives light from above and from the sides. Codominant Crown Position: Receives light from above and some from the sides. Intermediate Crown Position: Receives little light from above and none from the sides. Trees tend to be slender with poor live crown ratios. Suppressed Crown Position: Receives no light from above and none from the sides. Trees tend to be slender with poor live crown ratios. Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 25 Attachment 7. Tree Protection Fence Detail 6 ft. Temporary Chain Link Fence NO TRESPASSING - Protected Trees Sumpter – Preliminary Tree Protection Plan Washington Forestry Consultants, Inc. Page 26 Attachment 8. Assumptions and Limiting Conditions 1) Any legal description provided to the Washington Forestry Consultants, Inc. is assumed to be correct. Any titles and ownership's to any property are assumed to be good and marketable. No responsibility is assumed for matters legal in character. Any and all property is appraised or evaluated as though free and clear, under responsible ownership and competent management. 2) It is assumed that any property is not in violation of any applicable codes, ordinances, statutes, or other governmental regulations, unless otherwise stated. 3) Care has been taken to obtain all information from reliable sources. All data has been verified insofar as possible; however, Washington Forestry Consultants, Inc. can neither guarantee nor be responsible for the accuracy of information. 4) Washington Forestry Consultants, Inc. shall not be required to give testimony or to attend court by reason of this report unless subsequent contractual arrangements are made, including payment of an additional fee for such services as described in the fee schedule and contract of engagement. 5) Loss or alteration of any part of this report invalidated the entire report. 6) Possession of this report or a copy thereof does not imply right of publication or use for any purpose by any other than the person to whom it is addressed, without the prior expressed written or verbal consent of Washington Forestry Consultants, Inc. 7) Neither all or any part of the contents of this report, nor copy thereof, shall be conveyed by anyone, including the client, to the public through advertising, public relations, news, sales or other media, without the prior expressed written or verbal consent of Washington Forestry Consultants, Inc. -- particularly as to value conclusions, identity of Washington Forestry Consultants, Inc., or any reference to any professional society or to any initialed designation conferred upon Washington Forestry Consultants, Inc. as stated in its qualifications. 8) This report and any values expressed herein represent the opinion of Washington Forestry Consultants, Inc., and the fee is in no way contingent upon the reporting of a specified value, a stipulated result, the occurrence neither of a subsequent event, nor upon any finding in to reported. 9) Sketches, diagrams, graphs, and photographs in this report, being intended as visual aids, are not necessarily to scale and should not be construed as engineering or architectural reports or surveys. 10) Unless expressed otherwise: 1) information contained in this report covers only those items that were examined and reflects the condition of those items at the time of inspection; and 2) the inspection is limited to visual examination of accessible items without dissection, excavation, probing, or coring. There is no warranty or guarantee, expressed or implied, that problems or deficiencies of the tree or other plant or property in question may not arise in the future. Note: Even healthy trees can fail under normal or storm conditions. The only way to eliminate all risk is to remove all trees within reach of all targets. Annual inspections by an ISA Certified Arborist or Certified Forester will reduce the potential of tree failures. It is impossible to predict with certainty that a tree will stand or fail, or the timing of the failure. It is considered an ‘Act of God’ when a tree fails, unless it is directly felled or pushed over by man’s actions.