Where uncertainty exists with respect to the boundaries of the district as indicated on the Zoning Map, the following rules shall apply:

Resource Protection District (RP). The purpose of this district is to protect areas consisting largely of sensitive natural features such as woodlands, steep slopes, scenic areas, wetlands, floodplains, and lakes and ponds. Intensities are such as to ensure that these resources are permanently protected.

Rural Agricultural District (RA). The purpose of this district is to provide standards for low-intensity development in rural areas that are currently provided with utilities. Residential uses are permitted on large lots or where they are clustered with large areas of open space.

Suburban Residential Conservation District (SRC). It is the purpose of this district to preserve natural features and resources such as woodlands, steep slopes, wetlands, floodplains and lakes and ponds in areas where such features predominate. Residential uses are permitted on very large lots or where they are clustered with large areas of open space.

Suburban Residential Low District (SRL). It is the purpose of this district to provide for low-intensity suburban residential development. A variety of housing types are encouraged, as are clustering and the provision of open spaces. The intensities are intended to blend with existing residential uses and protect natural features and resources.

Suburban Residential Medium District (SRM). It is the purpose of this district to provide for medium-intensity residential development. A variety of residential uses are encouraged, as are clustering and the provision of open spaces. The medium intensities are intended to encourage well designed residential development near major roads.

Suburban Residential High District (SRH). It is the purpose of this district to provide higher intensities of residential development. A variety of residential uses are encouraged. The higher intensities relate to similar uses in adjacent developed areas of easy access and few natural limitations.

Planned Commercial District (PC). It is the purpose of this district to provide for the creation and continuation of commercial development in appropriate areas. Highway-oriented businesses may be required to provide an access road which is intended to lessen traffic congestion and hazards by reducing the number of access points.

Planned Industrial District (PI). It is the purpose of this district to encourage planned industrial, heavy commercial, office or laboratory uses in appropriate areas. Such development shall be planned as a whole with all uses fronting on an internal street. The intent is to encourage high-quality industrial and commercial development, which relates to adjacent residential development, with design standards which avoid adverse impacts on neighboring residential developments.

Extraction District (EXT). It is the purpose of this district to provide for the continuation of existing extractive operations and other uses which would otherwise interfere with the development and operation of other land uses.

Urban Residential Low (URL). It is the purpose of this district to retain the urban character of existing residential areas as well as to provide for future residential development in a variety of housing types at appropriate densities.

Overlay Zoning Districts.