1159.15 UTILITIES.
   (a)    Location. All utility facilities, including but not limited to gas, electric power, telephone, and CATV cables, shall be located underground throughout the subdivision. Whenever existing utility facilities are located above ground, except when existing on public roads and rights-of-way, they shall be removed and placed underground. All utility facilities existing and proposed throughout the subdivision shall be shown on the preliminary plat. Underground service connections to the street property line of each platted lot shall be installed at the subdivider's expense. At the discretion of the Planning Commission, the requirement for service connections to each lot may be waived in the case of adjoining lots to be retained in single ownership and intended to be developed for the same primary use.
   (b)    Easements.
      (1)   Easements centered on rear lot lines shall be provided for utilities (private and municipal) and such easements shall be at least ten (10) feet wide. Proper coordination shall be established between the subdivider and the applicable utility companies for the establishment of utility easements established in adjoining properties.
      (2)   When topographical or other conditions are such as to make impractical the inclusion of utilities within the rear lot lines, perpetual unobstructed easements at least ten (10) feet in width shall be provided along side lot lines with satisfactory access to the road or rear lot lines. Easements shall be indicated on the plat.