Purpose. Prior to the enactment of the Caln Township Comprehensive Plan (2003), a few planned residential communities had been previously approved under older alternative zoning regulations such as traditional neighborhood development, planned residential development, mixed-use development or lot averaging, which have been terminated as viable alternatives for planned residential communities. The purpose of the R-5 Zoning District is to recognize these planned residential communities, which because of their preexisting condition are allowed to continue under the basic zoning and land development provisions, as they were applied, recognized and approved in the past. Under this concept, the minimum and maximum dimensional requirements of the R-5 Zoning District should be compatible to the minimum and maximum dimensional requirements that were identified on the approved subdivision and land development plans for the applicable planned residential development. Where setback and coverage requirements are not provided on the approved subdivision and land development plan, the setback and coverage requirements in Matrix Chart 5, which is included as an attachment to this chapter, shall govern.