| C | D | E | F | G | H | I | J | K | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Summary of Arborist Recommendations | ||||||||
| 2 | Spade Tree Preservation for JH Baxter Offsite Investigation, Eugene, Oregon | ||||||||
| 4 | Number (Report) | Number (Procurement) | Scientific Name | Common Name | Size (DxHxS) | Depth of Excavation (in bgs) | Arborist Recommendation | Reason for Removal (where applicable) | Property Owner Decision |
| 5 | 210 Baxter Street (DU-09) | ||||||||
| 6 | DU-09_01 | Prunus | Decorative Plum | 3"x7'x8' | 18 | May transplant | Transplant | ||
| 7 | DU-09_02 | 1 | Pseudotsuga menziesii | Douglas Fir | 16"x50'x20' | Removal prior to excavation | It has several defects: there is a wound at the base of the tree to the north, it has been previously topped, it is being suppressed by the larger Sequoia to the west, and it has an unbalanced canopy to the east. Due to the species, the size, and the required soil removal depth, this tree would experience significant root loss and structural instability. It is recommended this tree be removed, | Remove | |
| 8 | DU-09_03 | 2 | Sequoia sempervirens | Coastal Redwood | 51"x75'x40' | Removal prior to excavation | It has been previously topped, and out of this topping cut several codominant stems have emerged. This species is known to fail at codominant stems and is a shallow rooted species. Due to the species, the size, and the required soil removal depth, this tree would experience significant root loss and structural instability | Remove | |
| 9 | |||||||||
| 10 | DU-11_01 | 1 | Picea pungens | Blue Spruce | 17"x40'x30' | 24 | Removal prior to excavation | This individual has several issues and defects: it is located within 10’ of the house and driveway, there are several wounds to the trunk, some with metal hardware, and there are codominant stems at 20’ up the trunk. Due to the amount of soil removal, the defects in the tree, and the proximity to targets, it is recommended that this tree is removed | Remove |
| 11 | DU-11_02 | 2 | Pseudotsuga menziesii | Douglas Fir | 24"x70'x75' | Removal prior to excavation |
The tree has several defects including a codominant stem at 40’
up the main trunk and an unbalanced canopy to the south. This species has a poor tolerance of root disturbances, and, due to the depth of soil removal and the preexisting defects, it is recommended that this tree be removed. Due to the amount of soil removal, the defects in the tree, and the proximity to targets, it is recommended that this tree is removed. The loss of soil volume would cause significant instability and/or considerable dieback in the specimen resulting in an unacceptable risk level. To reduce the risk of root failure, the tree should be removed prior to the soil removal. |
Remove | |
| 12 | DU-11_03 | 3 | Juglans nigras | Black Walnut | 6"x25'x15' | Removal (can occur during excavation) | The tree has a girdling branch wrapping around the main stem, is poorly sited next to the fence line, and is in close proximity to the road. This species has a poor tolerance of root disturbances, and, due to the depth of soil removal and the preexisting defects, it is recommended that this tree be removed. The loss of soil volume would cause significant instability and/or considerable dieback in the specimen resulting in an unacceptable risk level over the long term. | Remove | |
| 13 | DU-11_04 | 4 | Acer macrophyllum | Big Leaf Maple | 26"x50'x40' | 12 | Removal prior to excavation |
The tree has several defects including a codominant stem at the
base of the tree and an unbalanced canopy to the south. This
species has a poor tolerance of root disturbances. Due to the
amount of soil removal, the defects in the tree, and the proximity
to targets, it is recommended that this tree is removed. The
loss of soil volume would cause significant instability and/or considerable dieback in the specimen resulting in an unacceptable risk level. |
Remove |
| 14 | DU-11_05 | 5 | Crataegus laevigata | English Hawthorn | 11"x35'x50' | Removal prior to excavation |
The central stem has been removed, leaving two overextended scaffold
branches to the east and west. The eastern branch has a large decay pocket in the trunk on the southern side at 5’. Due to the significant defects in this tree, removal is the recommended course of action. Maintaining the tree in the landscape after the soil removal would create an unacceptable level of risk. |
Remove | |
| 15 | DU-11_06 | Juglans nigras | Black Walnut | 33"x55'x45' | Keep, minimal-impact excavation technique w/ arborist onsite | Remove | |||
| 16 | 220 Baxter Street (DU-10) | ||||||||
| 17 | DU-10_01 | Pseudotsuga menziesii | Douglas Fir | 47"x85'x40' | 18 | Contact City for options/recommendations | Save/City ROW | ||
| 18 | DU-10_02 | Acer palmatum | Japanese Maple | 2"x3'x3' | Transplant | Transplant | |||
| 19 | 225 Baxter Street (DU-15) | ||||||||
| 20 | DU-15_01 | pseudotsuga menziesii | Douglas Fir | 31"x75'x35' | 12 | Keep, minimal-impact excavation technique up to crown diameter w/ arborist onsite | Save | ||
| 21 | DU-15_02 | 1 | Ilex aquifolium | Common Holly | 6"x10'x8' | Removal (can occur during excavation) |
The tree has several defects including codominant stems at the
base, and Ilex aquifolium are an invasive species in Oregon,
especially in, or near, riparian areas. This species has a good tolerance of root disturbances, but, due to the preexisting defects and invasive issue, it is recommended that this tree be removed |
Remove | |
| 22 | DU-15_03-05 | Sequoia sempervirens or Calocedrus decurrens | Coastal Redwood/California Incense Cedar | min 1"x3'x3' max 1"x5'x4' | Transplant, re-plant in fall/winter OR keep, minimal-impact excavation technique | Indifferent/City ROW | |||
| 23 | DU-15_06 | Juglans nigra | Black Walnut | 33"x55'x45' | Keep, minimal-impact excavation technique up to 30' radius w/ arborist onsite | Save | |||
| 24 | DU-15_07-15 | 3,4 | Varies (several are fruit trees) | several fruit trees | min 1"x2'x2' max 1"x6'x5' | Transplant, re-plant in fall/winter OR keep, minimal-impact excavation technique | Save majority (Remove two small Coastal redwoods) | ||
| 25 | DU-15_16 | 2 | pseudotsuga menziesii | Douglas Fir | 27"x75'x35' | Removal prior to excavation |
There was a codominant stem that was removed to the eastern side
of the tree, leaving the western stem unbalanced. The cut is too large for the tree to reasonably compartmentalize, and the unbalanced nature of the remaining stem creates a risk to the houses to the northwest and southwest. Due to the amount of soil removal, the defects in the tree, and the proximity to targets, it is recommended that this tree is removed. |
Remove | |
| 26 | 235 Baxter Street (SO-07) | ||||||||
| 27 | SO-07_01 | Acer saccharum | Sugar Maple | 14"x35'x30' | 12 | Contact City for options/recommendations | Save/City ROW | ||
| 28 | SO-07_02 | Acer palmatum | Japanese Maple | 2"x3'x5' | Transplant | Transplant | |||
| 29 | SO-07_03-04 | Malus pumila | Apple | 1"x8'x6' | 6 | Transplant (if possible) or keep, minimal-impact excavation technique up to 2' radius | Transplant | ||
| 30 | SO-07_05 | 1 | Acer ginnala | Amur Maple | 6"x20'x20' | Keep, minimal-impact excavation technique up to 8' radius w/ arborist onsite | Remove | ||
| 31 | 240 Baxter Street (SO-06) | ||||||||
| 32 | SO-06_01 | 1 | Crataegus laevigata | English Hawthorn | 17"x25'x25' | 6 | Removal prior to excavation | This individual has several issues and defects: rot in trunk, overextended branches with previous failures apparent and is intertwined with the overhead communication wires to the east. Due to the condition of the tree and its proximity to targets, retention is not warranted. | Remove |
| 33 | SO-06_02 | 2 | Corylus avellana | Common Hazel | 16"x25'x25' | Keep, minimal-impact excavation technique up to 1' radius w/ arborist onsite, remove if mechanical excavation causes too much additional root damage | Remove | ||
| 34 | SO-06_03 | 3 | Crataegus laevigata | English Hawthorn | 16"x30'x30' | Removal prior to excavation | This individual has several issues apparent including: rot in trunk , old flush cut/failure, overextended branches with previous failures apparent, and is intertwined with the overhead communication wires to the east. Due to the condition of the tree and its proximity to targets, retention is not warranted. | Remove | |
| 35 | SO-06_08 | 4 | Juglans nigras | Black Walnut | 11"x35'x25' | Removal prior to excavation | Despite the minimal impacts the soil removal may have, the tree has a couple overextended branches and an unbalanced canopy, with most of the weight extending to the west. There are several targets within striking distance of this tree, and the risk of failure is high enough to warrant removal of this tree prior to soil removal activities. | Remove | |
| 36 | 242 Alva Park Drive (AP-01) | ||||||||
| 37 | AP-01_01 | Chamaecyparis lawsoniana | Port Orford Cedar | 29"x80'x40' | 6 | Contact City for options/recommendations | Save/City ROW | ||
| 38 | AP-01_02 | 1 | Malus ioensis | Crab Apple | 12"x15'x20' | Keep, minimal-impact excavation technique up to 8' radius w/ arborist onsite | Remove | ||
| 39 | AP-01_03 | Juglans nigra | Black Walnut | 18"x40'x35' | Keep, minimal-impact excavation technique up to 18' radius w/ arborist onsite | Save | |||
| 40 | AP-01_04 | 2 | Ligustrum ovalifolium | California Privet | 3"x15'x20' | Removal (can occur during excavation) | This specimen is in such poor shape removal is the best and most cost-effective option. The tree can be removed at the same time as soil excavation. | Remove | |
| 41 | AP-01_05 | Corylus avellana | Common Hazel | 8"x15'x25' | Removal prior to excavation | The tree is in such poor shape removal is the best and most cost-effective option. To reduce the risk of root failure, the tree should be removed prior to the soil removal. | Save | ||