No single-family cluster development shall be approved unless the applicant proves in the determination of the Board of Commissioners, considering the advice of the Planning Commission, that the cluster development would be superior to what would occur in a conventional development under the existing zoning, based upon one or more of the following standards:
A. The cluster option would result in the permanent preservation in common open space of land along a creek, river or lake or land that is densely wooded or that is steeply sloped, or that would be highly suitable for additions to existing public parkland, such as passive parkland along the Monocacy Creek, Lehigh Canal and/or the Lehigh River.
B. The cluster option would allow the permanent preservation in common open space of land clearly suitable for active recreation, considering review by the Township Park and Recreation Commission.
C. The cluster option would result in landscaped open space providing a substantial buffer to reduce conflicts between dwellings and existing or potential nuisance-generating uses (such as an adjacent industrial district) or an existing or planned expressway or arterial highway (such as Routes 22 and 33).
D. The cluster option would result in the permanent preservation of a tract of agricultural land that is economical in configuration and characteristics. Such agricultural land may include crop land, plant nurseries (with on-site retail sales limited to plants primarily grown on the premises), Christmas tree farms or hayfields, but shall not include new intense indoor livestock operations.