The licensee shall not, and shall prohibit any officer, agent, employee, contractor or subcontractor which it retains from removing or trimming any tree or portion thereof (either above, at or below ground level), which is located within a street without the prior written approval of the director of public works of the county or city in which the street is located. Such consent may be given or withheld upon such terms and conditions as the director of public works deems appropriate. Each licensee shall be responsible for and shall indemnify, defend and hold harmless the county, cities, cable television commission, and their officers, agents and employees from and against any and all damages arising out of or resulting from the removal, trimming, mutilation of or any injury to any tree or trees proximately caused by the license or its officers, agents, employees, contractors or subcontractors. (Prior code § 20.14.1324)