1. General.
A. Where not prohibited by this or any other laws or ordinances, land located in any designated floodplain area may be platted for development with the provision that the developer construct all buildings and structures to preclude flood damage in accordance with this Chapter, the Uniform Construction Code [Chapter 5, Part 1], the other ordinances of the Township and any other laws and ordinances regulating such development. Specifically, FEMA regulations shall be considered.
B. No subdivision or land development, or part thereof, shall be approved if the proposed development or improvements will individually or collectively increases the 100-year flood elevation:
(1) By any height, when the subdivision or land development occurs within an identified floodway area.
(2) By more than 1 foot, if the subdivision or land development occurs in any other portion of the identified floodplain area.
C. Building sites for residences or any other type of dwelling or accommoda tion shall not be permitted in any floodway area. Sites for these uses may be permitted outside the floodway area in a floodplain area if the lowest habitable floor (including basement) is elevated to the regulatory flood elevation. If fill is used to raise the elevation of a site, the fill area shall extend laterally for a distance of at least 15 feet beyond the limits of the proposed structure, and access shall meet the requirements of § 22-903.3 below.
D. Building sites for nonresidential structures or buildings shall not be permitted in any floodway area. Sites for such structures or buildings outside the floodway in a floodplain area shall be protected as provided for in § 22-903.1.C above. However, the Board of Township Supervisors may allow the subdivision or development of areas or sites for commercial and industrial uses at an elevation below the regulatory flood elevation if the developer otherwise protects the area to that height, or assures that the buildings or structures will be flood-proofed to the regulatory flood elevation.
E. If the Board of Township Supervisors determines that only a part of a proposed plan can be safely developed, it shall limit development to that part and shall require that development proceed consistent with this determination.
F. When a developer does not intend to develop the plan himself, and the Board of Township Supervisors determines that additional controls are required to ensure safe development, it may require the developer to impose appropriate deed restrictions on the land. Such deed restrictions shall be inserted in every deed and noted on every recorded plan.
2. Drainage Facilities.
A. Storm drainage facilities shall be designed to convey the flow of surface waters without damage to persons or property. The system shall insure drainage at all points along streets, and provide positive drainage away from buildings, on- site water supply systems and on-lot disposal sewage systems.
B. Plans shall be subject to the approval of the Board of Township Supervi sors. The Board of Township Supervisors may require a primarily underground system to accommodate frequent floods and a secondary surface system to accommodate larger, less frequent floods. Drainage plans shall be consistent with local and regional drainage plans. The facilities shall be designed to prevent the discharge of excess runoff onto adjacent properties. All drainage facilities shall be designed in accordance with Part 10 of this Chapter and the Township Stormwater Management Ordinance [Chapter 19].
3. Streets and Driveways. The finished elevation of proposed streets and driveways shall not be greater than 1 foot below the regulatory flood elevation. Profiles and elevations of streets and driveways to determine compliance with this requirement, and as required by other provisions of this Chapter, shall be submitted with the preliminary plan. Drainage openings shall be sufficient to discharge flood flows without unduly increasing flood heights.
4. Sewer Facilities. All sewage systems located in any designated floodplain area, whether public or private, shall be floodproofed up to the regulatory flood elevation.
5. Water Facilities. All water systems located in any designated floodplain area, whether public or private, shall be floodproofed up to the regulatory flood elevation.
6. Other Utilities and Facilities. All other public or private utilities and facilities, including gas and electric, shall be elevated or floodproofed up to the regulatory flood elevation.
7. Excavation and Grading. Where any excavation or grading is proposed or where any existing trees, shrubs, or other vegetative cover will be removed, the developer shall consult the York County Conservation District representative concerning plans for erosion and sediment pollution control, and to also obtain a report on the soil characteristics of the site so that determination can be made as to the type and degree of development the site may accommodate.
(Ord. 2011-05, 3/14/2011, § 903)