Section 119-112 - Tier I tree planting requirements
All developments , enlargements and site alterations on Tier I sites shall comply with the tree planting requirements set forth in this Section, whether or not existing trees are removed as a result of such development , enlargement or site alteration . However, the requirements set forth herein shall not apply to any enlargement of an existing building , provided that such enlargement does not increase the lot coverage of said building .
On-site trees, pre-existing or newly planted, shall be provided on the zoning lot at the rate of one tree for each 1,000 square feet of lot area , or portion thereof, or shall equal a total of 51 percent of all tree credits for trees originally on site, whichever is greater.
For any existing tree of at least six-inch caliper that is preserved, credit for one tree shall be given for the first six inches of caliper and, for each additional four inches of caliper , credit for an additional tree shall be given.
Single-trunk trees, newly planted to meet this requirement, shall be of at least three-inch caliper at the time of planting. Multiple-trunk trees and low-branching coniferous evergreens shall be at least 10 feet in height at the time of planting. On-site trees shall be of a species selected from Appendix B (Selection List for On-site Trees).