There shall be close coordination between all City departments when public trees are affected. Sight distance concerns for stop signs and other regulatory signs and signals shall be referred to the City Traffic Engineer who in turn shall authorize the City Forester to take necessary corrective action. Plans for all lighting, power transmission and distribution, sewer, irrigation, water, street and other public works projects shall be considered with reference to their effect upon trees on public property prior to the beginning of work on such projects, and the various City department heads shall confer with the City Forester to coordinate programs and to minimize damage to trees on all projects.