All aboveground utilities shall be placed on rear or side property lines. Where a subdivision is traversed by a watercourse, an appropriate easement shall be provided for the watercourse in either an open cut or in an underground conduit, depending upon the density of development. Where water mains, sanitary sewers, storm sewers, gas mains, telephone lines, power lines or other utilities are located on or adjacent to property lines, adequate easements together with a right of ingress or egress thereto and therefrom shall be provided and platted. Said easement shall provide that no structure, building or pavement, except a division fence, shall be placed on said easement and the plat of subdivision shall so state. Easements shall not be less than ten feet (10') in width and shall be centered upon the centerline of the utility. Where more than one utility is to occupy the easement, the easement shall be of such width as to extend five feet (5') at each side beyond the centerline of the outermost utilities. Additional width shall be provided where necessary to accommodate utility pole bracing. The real estate development board may require evidence of approval by the public utility company of easement width. Where side lot easements occur adjacent to a driveway, there shall not be less than ten feet (10') clearance between the easement line and the extreme projection of the building structure. (1970 Code §35.62)