HomeMy WebLinkAbout19 TR_Sather_Arborist Report Addendum_20180731_v2Shoffner Consulting
6741 NE 182nd St. Unit C401 Kenmore, WA 98028 Mobile:(206)755-9407
July 23rd, 2018
Patty Sather
532 SW 3rd Pl.
Renton, WA
98057
RE: Tree Inventory and Retention Plan Addendum - Sather SP, Renton, WA.
Patty:
This report is provided as an addendum to the original report dated May 30, 2017
reporting on the tree inventory of your property at the address of 532 SW 3rd Pl. in the
City of Renton WA. This addendum addresses recent site plan changes that require the
removal of additional trees.
1.0 Site Plan Tree Retention Revisions
In order to achieve the 5,000 s.f. minimum lot size, both lots will be shifted just over 10
feet to the south into lot A. This adjustment moves development related impacts into the
protection zones of trees 13, 14 and 23. These impacts call for grading and excavation
that will result in significant damage to the root systems of these trees, encroaching into
their root plates, the region wherein the major structural roots provide the most
stabilization function. This significant encroachment and resulting root loss will also
remove more than the recommended 1/3 total root area which will have a significant
impact upon the growth of the trees. The reduced ability of these trees to maintain the
current levels of water, oxygen and nutrient uptake will impair their growth and repair
functions. Given these impacts, these trees will no longer be good candidates for
retention and therefore are recommended to be removed.
2.0 Required Tree Retention and Proposed
The property is located in a residential zone and is planned to be single family
residences, therefore tree retention is required at 2 trees per every 5,000 square feet of
property area. At total area of 22,920 square feet, retention/replacent is required with 9
trees.
The prior site plan proposed the retention of the following 12 trees: 2, 3, 4, 7, 8, 9, 10,
11, 12, 13, 14 and 23.
The removal of trees 13, 14 and 23 due to the discussed site plan changes will still
maintain the required 9 trees to be retained, satisfying the City of Renton’s tree
retention requirements.
4.0 Use of This Report
This addendum to the original Tree Inventory and Retention Plan report is provided to
Patty Sather as a means of addressing the proposed site plan changes and the
resulting impacts to trees previously proposed to be retained affecting the total tree
retention numbers. No site visit was made for the preparation of this report, therefore,
the conditions of the trees proposed to be retained are not specified nor warranted.
Shoffner Consulting cannot be held liable for the failure of any retained trees.
Please call if you have any additional questions.
Cordially,
Tony Shoffner
ISA Certified Arborist #PN-0909A
CTRA/TRAQ #1759