Article VI. Criteria For Preliminary Plat And Site Plan Approval
Section 6.1 General
- A. Preliminary Plat: The owner or developer of any proposed residential, commercial, or manufactured home subdivision shall submit and process a Preliminary Plat in accordance with Jefferson County land development ordinances.
- Site Plan: The owner or developer of any proposed manufactured home (rental unit) park or other commercial (for profit & non-profit), institutional, or industrial type land development project, shall submit and process a Site Plan in accordance with Jefferson County land development ordinances.
Section 6.2 Basic Preliminary Plat and Site Plan Information
At a minimum, the Preliminary Plat or Site Plan shall include the following information:
- Name of registered professional engineer, licensed professional surveyor or other qualified person responsible for providing the information required in this section.
- A map showing the location of the proposed subdivision and/or land development with respect to the county’s floodplain areas, the proposed lot sites, and areas to be graded/filled.
- It is required that all subdivision proposals and manufactured home (rental unit) parks or other commercial (for profit & non-profit), institutional or industrial type development projects, or any other new development proposed to take place either fully or partially within the approximated floodplain (F4), and which are greater than Ten (10) lots or two (2) acres, whichever is the lesser, shall include base flood elevation data and shall delineate a floodway. If FEMA has completed a Flood Insurance Study (FIS), that data must be used to substantiate the base flood. Otherwise, the developer may submit data provided by an authoritative source, such as U.S. Army Corps of Engineers, U.S. Geological Survey, Natural Resources Conservation Service, state and local water resource departments, or technical data developed using detailed methodologies comparable to those contained in a Flood Insurance Study. This data shall be prepared and certified by a registered professional engineer, who shall certify that the technical methods used correctly reflect currently accepted technical concepts.
- Where the subdivision and/or development project lie partially or completely in the floodplain areas, the preliminary plat or site plan shall include detailed information giving the location and elevation of proposed roads, public utilities and building sites. All such maps shall also show contours at intervals of two (2) feet and identify accurately the boundaries of the floodplain areas.
Section 6.3 – Restrictions to Subdivision of Land in Floodplain Areas
Subdivision of land in the floodplain area shall result in lots that include a buildable portion outside of the identified flood hazard area. The size of the buildable area shall be in accordance with the requirements of the Zoning and Subdivision Ordinances. All lots shall have a minimum building setback of 25’ horizontal from the limits of the flood hazard area, or 2’ vertical above the Base Flood Elevation, whichever is greater in the horizontal distance from the limits of the flood hazard area. All new structures must be sited on the portion of the subdivided lot that is located outside of the identified flood hazard area. No subdivision streets shall be located within the floodplain; however, a street may cross the floodplain for the purpose of gaining access to the other side of the stream provided it complies with all other local, State, and Federal design and permitting requirements.
Section 6.4 – Restrictions to the Development of Land in Floodplain Areas
The development of any proposed manufactured home (rental unit) park or other commercial (for profit & non-profit), institutional, or industrial type development project shall result in a buildable area outside of the identified flood hazard area. The size of the buildable area shall be in accordance with the requirements of the Zoning and Subdivision Ordinances. The buildable area shall have a minimum building setback of 25’ horizontal from the limits of the flood hazard area, or 2’ vertical above the Base Flood Elevation, whichever is greater in the horizontal distance from the limits of the flood hazard area. All new building structures shall be sited on the buildable area located outside of the identified flood hazard area.