Specifications include, but are not limited to: Perform tree trimming and removal services as required on County property and along roadsides in unincorporated areas of Napa County; • Be capable of providing for lane closures, including signage, barricades and warning devices necessary to complete work in a safe manner when the Napa County roads crew is not available for assistance; • Provide stump-grinding service; • Supply necessary labor, tools and equipment required to perform services in a professional manner; and • Be capable of: • Evaluating trees and make recommendations to PW; • Supervising trimming and removal of trees as directed by the Project Manager; and • Supervising all work performed for the County.