(a) Building Lines. Building lines shall be established to the front yard requirements set forth in the Zoning Ordinance.
(b) Easements Generally. Easements of at least seven and one-half feet in width shall be provided on each side of all rear lot lines and along side lot lines, where necessary, for underground utilities such as electric, telephone service and gas mains. Easements having greater width dimensions may also be required along or across lots where engineering design or special conditions may necessitate the installation of water and sewer lines outside public rights of way. For lots facing on curvilinear streets, the rear easement should consist of straight lines with a minimum number of points of deflection.
(c) Easements Along Streams. Whenever any stream or important surface drainage course is located in the area being subdivided, the subdivider shall provide an easement of at least forty feet in width, or such width as may be determined by the Planning Commission and Municipal Engineer along each side of the stream for the purpose of widening, deepening, relocating or protecting the stream for drainage or public use.