Authority of the Parks and Shade Tree Commission. The Parks and Shade
Tree Commission shall have the authority to hear and decide appeals
where it is alleged that there is error in any decision made by the
City Arborist relating to a tree plan or tree removal permit. In exercising
its authority, the Park and Shade Tree Commission may reverse or affirm,
wholly or in part, or may modify the City Arborist's decision,
only if it finds that the City Arborist's decision is contrary
to a specific provision of this chapter, is not supported by substantial
evidence, or is arbitrary or capricious. The Parks and Shade Tree
Commission shall set forth its decision, in writing, within 30 days
following the hearing, which decision shall include the findings and
conclusions on which the decision is based.