HomeMy WebLinkAbout17254-F-Tree Retention Worksheet-Renton-2014-12-19H:\CED\Data\Forms-Templates\Self-Help Handouts\Planning\TreeRetentionWorksheet.doc 12/08
City of Renton
TREE RETENTION
WORKSHEET
1. Total number of trees over 6” in diameter1 on project site: 1. ____________ trees
2. Deductions: Certain trees are excluded from the retention calculation:
Trees that are dead, diseased or dangerous2 ________ trees
Trees in proposed public streets ________ trees
Trees in proposed private access easements/tracts ________ trees
Trees in critical areas3 and buffers ________ trees
Total number of excluded trees: 2. ____________ trees
3. Subtract line 2 from line 1: 3. ____________ trees
4. Next, to determine the number of trees that must be retained4, multiply line 3 by: 0.3 in zones RC, R-1, R-4, or R-8
0.1 in all other residential zones
0.05 in all commercial and industrial zones 4. ____________ trees
5. List the number of 6" or larger trees that you are proposing5 to retain4:
5. ____________ trees
6. Subtract line 5 from line 4 for trees to be replaced: 6. ____________ trees (If line 6 is less than zero, stop here. No replacement trees are required).
7. Multiply line 6 by 12” for number of required replacement inches:
7. ____________ inches
8. Proposed size of trees to meet additional planting requirement:
(Minimum 2” caliper trees required) 8. ____________ inches
per tree
9. Divide line 7 by line 8 for number of replacement trees6:
(if remainder is .5 or greater, round up to the next whole number)
9. ____________ trees
1. Measured at chest height.
2. Dead, diseased or dangerous trees must be certified as such by a forester, registered landscape architect, or certified arborist, and approved by the City.
3. Critical Areas, such as wetlands, streams, floodplains and protected slopes, are defined in Section 4-3-050 of
the Renton Municipal Code (RMC). 4. Count only those trees to be retained outside of critical areas and buffers. 5. The City may require modification of the tree retention plan to ensure retention of the maximum number of
trees per RMC 4-4-130H7a 6. Inches of street trees, inches of trees added to critical areas/buffers, and inches of trees retained on site that
are less than 6" but are greater than 2" can be used to meet the tree replacement requirement.