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1234.05 RELATION OF SEWER TO WATER INSTALLATIONS.

(a) Water Supply Interconnections. There shall be no physical connection between a public or private potable water supply system and a sewer which will permit the passage of any sewage or polluted water into the potable water supply.

(b) Sewer and Water Mains. A minimum horizontal distance of ten feet shall be maintained between parallel water and sewer lines unless shelving is used. If shelving is used, the water lines shall be at the higher elevation of the trench. At points where sewers crass water mains at a vertical distance of less than two feet, special treatment of the sewer pipes shall be required to preclude contamination of potable water. In no case shall the vertical distance be less than the Pennsylvania Department of Environmental Resources requirements.

(c) On-Lot Water Supply and Sewerage Facilities. On-lot sewage disposal systems shall be kept removed from water supply wells or other water supply sources in accordance with the latest Pennsylvania Department of Environmental Resources’ requirements. A lot to accommodate both on-lot sewage disposal and on-lot water supply shall be no smaller than 30,000 square feet.

(Ord. 668. Passed 10-17-90.)

1234.06 UTILITY LINES AND EASEMENTS.

(a) General Regulations.

(1) Where practicable, all utilities, with the exception of on-site laterals, shall be located in public rights-of-way. Where this is not possible, utility easements shall be located on or adjacent to rear or side lot lines to the fullest extent possible.

(2) In general, the required pipe or other improvement shall be located in the center of the easement.

(3) Prior to determining the location of easements, the Planning Commission shall require the developer or subdivider to coordinate his plans with those of the local public utilities in order to assure proper location of easements for the installation of the required service.

(4) No permanent structures or trees shall be placed within such easements.

(5) Where practicable, utility lines shall share a common utility easement.

(6) All electric, telephone service, and cable television transmission lines in new residential developments with five or more dwellings shall be placed underground and installed in accordance with the prevailing standards of the utility company providing such services.

(b) Width of Sanitary and Storm Sewers. Sanitary or storm sewer easements shall have a minimum width of twenty-five feet.

(1) No company intending to install any petroleum, petroleum product or natural gas transmission lines shall be allowed to construct the lines on less than a fifty-foot right-of-way. Such lines are to be installed in the center of the right-of-way and shall comply with the applicable standards imposed by state and federal laws and regulations.

(2) There shall be a minimum distance of thirty-five feet, measured from the right-of-way line, between any proposed dwelling unit or other structure and the right-of-way line of any petroleum, petroleum products or natural gas transmission line which traverses the subdivision or land development.

(3) The developer or subdivider shall obtain written approval from the various petroleum or natural gas companies when constructing roads or driveways on or within twenty feet of petroleum, petroleum products or natural gas line easements when required by the utility company. (Ord. 668. Passed 10-17-90.)

1234.07 STORMWATER MANAGEMENT.

(a) Overall Considerations. In all subdivisions and land developments proposed, storm drainage facilities shall be provided in order to:

(1) Permit unimpeded flow of natural watercourses.

(2) Insure adequate drainage of all low points along the lines of streets.

(3) Intercept stormwater runoff along streets at intervals related to the extent and grade of the area drained.

(4) Provide positive drainage away from on-site sewage disposal.

(5) Remove surface water from the bottom of vertical grades, lead water from springs, and avoid excessive use of cross-gutters at street intersections and elsewhere.

(b) Stormwater Management Plan. Each subdivision and/or land development shall provide:

(1) Calculations of runoff concentration and the proposed stormwater management system

(2) Complete drainage systems for the subdivision or land development.

(3) Approval by the Pennsylvania Department of Transportation when drainage structures are to be located on State highway rights-of-way or connection is made to the existing State highway system.

(c) Further Considerations. Further considerations and requirements are detailed in Chapter 1043 of the Streets, Utilities and Public Services Code.

(Ord. 668. Passed 10-17-90.)

1234.08 EROSION AND SEDIMENTATION CONTROL.

(a) General Requirements.

(1) All earthmoving activities shall be conducted in such a way as to prevent accelerated erosion and the resulting sedimentation.

(2) No change shall be made in the contour of the land, and no grading, excavating, removal or destruction of the topsoil, trees or other vegetative cover shall be commenced in any proposed subdivision or land development until such time as a conservation plan has been prepared.

(3) The conservation plan shall be developed in the form outlined in the Soil Erosion and Sedimentation Control Manual, issued by the Pennsylvania Department of Environmental Resources.

(4) Final approval for a development tract of twenty-five or more acres will be contingent upon the issuance of a permit by the Pennsylvania Department of Environmental Resources (Required by Pennsylvania Rules and Regulations, Department of Environmental Resources, Chapter 102, as amended, “Erosion Control,” under the authority of the Clean Streams Law).

(5) Measures used to control erosion and reduce sedimentation shall meet the standards and specifications of the Delaware County Conservation District and Chapter 1224 of this Planning and Zoning Code.

(6) The Township Engineer, or other designated local official, shall ensure compliance with the appropriate specifications, copies of which are available from the Delaware County Conservation District.

(Ord. 668. Passed 10-17-90.)

(b) Grading for Drainage.

(1) Grading for drainage shall be performed whenever necessary in order to provide more suitable sites for building and other uses, improve surface drainage, and control erosion.

(2) All lots, tracts, or parcels in a proposed subdivision or land development shall provide proper drainage away from buildings and dispose of surface water without ponding except where an alternative drainage system is approved by the Township Commissioners. Natural drainage patterns shall be preserved whenever possible.

(3) All drainage facilities shall be designed to adequately handle the surface runoff and carry it to the nearest suitable outlet, such as a curbed street, storm drain, or natural watercourse. When drainage swales are used to divert surface waters away from buildings, they shall be sodded or planted and shall be of such slope, shape, and size as to conform with the requirements of the Delaware County Conservation District. Concentration of surface water runoff shall be permitted only in swales or watercourses. In the case of single-family or multi-family development, swales extending three or more contiguous lots shall be interrupted by an inlet or redirected to the street.

(4) Cut and fill slopes shall be no steeper than two horizontal feet to one vertical foot unless stabilized by a retaining wall or curbing or unless approved by the Township Engineer subject to special conditions.

(5) Adequate provisions shall be taken to protect against adverse effects of cut and fill.

(6) Fills shall not encroach on natural watercourses or constructed channels; when p laced adjacent to natural watercourses or constructed channels they shall have suitable protection against erosion during periods of flooding.

(7) During grading operations, necessary measures for dust control will be exercised.

(8) Grading equipment will not be allowed to cross live streams. Provisions will be made for the installation of culverts.

(c) Performance Principles. The following measures are effective in minimizing erosion and sedimentation and shall be included when applicable on the conservation plan:

(1) Stripping of vegetation shall be done in such a manner as will minimize erosion.

(2) Salient natural features should be preserved when possible and cut-fill operations shall be kept to a minimum to create the least erosion potential.

(3) The disturbed area and the duration of exposure shall be kept to a practical minimum.

(4) Temporary vegetation and or mulching shall be used to protect exposed critical areas during development.

(5) The permanent vegetation and structural erosion and drainage measures shall be installed as soon as practical in the development.

(6) Provisions shall be made to effectively accommodate the increased runoff caused by changed soil and surface conditions during and after development. Where necessary the rate of surface water runoff will be structurally retarded.

(7) Sediment in the runoff water shall be trapped until the disturbed area is stabilized by the use of debris basins, sediment basins, silt traps, or similar measures.

(Ord. 668. Passed 10-17-90.)