Except for lots established under the open space design option, where any lot is served by an individual on-site sewage system, a contiguous net lot area of at least 33,000 square feet shall be provided which shall not be divided completely by any of the following areas:
(a) Any permanent right-of-way or easement for a public or private street.
(b) Any area within the Flood Plain District as established in Article
XII.
(c) Any area comprising wetlands under the jurisdiction of the U.S. Army Corps of Engineers or the Pennsylvania Department of Environmental Protection.
(d) Any area within the Severe Slope District as established in Article
XIII.