Whenever possible, sanitary sewers shall be constructed in the public right-of-way. When sewers are proposed to be constructed in easements and when unsewered or undeveloped property adjoins the applicant’s property, the applicant may be required to extend the sewer and/or an easement dedicated to the City or its assignee, to the upstream property line. The easements shall be accessible to vehicular traffic. Easements along public rights-of-way shall be contiguous with the rights-of-way.