8.3.3.5   Limitations on Impervious Area
   (A)   Calculation of Impervious Surface Area: Calculation of impervious surface area shall include the pavement area of all existing and proposed internal public and private streets, driveways, rooftops, parking lots, patios, and all other impervious surfaces on a project-by-project basis, but shall not include pathways that are a part of the Village of Pinehurst official greenway system. For purposes of calculating the percentage of impervious area coverage, the total project area shall be regarded as the actual area of the property plus the area within the rights-of-way of the internal streets.
   (B)   WS-II Watershed Protection District (Drowning Creek–Lumber River WS-II BW):
      (1)   Single Family Residential development shall not exceed one dwelling unit per acre or twelve percent (12%) built-upon area on a project-by-project basis. Multi-family Residential development shall not exceed one dwelling unit per acre or twelve percent (12%) built-upon area on a project-by-project basis except as provided in (2) below. Non-residential development shall not exceed twelve percent (12%) built-upon area on a project-by-project basis except as provided in (2) below;
      (2)   Special intensity allocation up to ten percent (10%) of the balance of the watershed may be developed for non-residential and multi-family uses to seventy percent (70%) built-upon area on a project-by-project basis, provided that the following conditions are met:
         (a)   For the purpose of calculating built-upon area, total project area shall include total acreage in the tract on which the project is to be developed;
         (b)   The Village Council must approve the Special Intensity Allocation in accordance with any adopted policies it has related to the distribution of the Special Intensity Allocation;
         (c)   Projects must minimize built-upon surface area and incorporate Best Management Practices to minimize water quality impacts.
   (C)   WS-III Watershed Protection District (Nicks Creek–Cape Fear River; Little River–Intake #2; and Little River–Vass WS-III BW):
      (1)   Single Family Residential development shall not exceed two (2) dwelling units per acre or twenty-four percent (24%) built-upon area on a project-by-project basis. Multi-family Residential development shall not exceed two (2) dwelling units per acre or twenty-four percent (24%) built-upon area on a project-by-project basis except as provided in (2) below. Non-residential development shall not exceed twenty-four percent (24%) built upon area on a project-by-project basis except as provided in (2) below;
      (2)   Special intensity allocation up to ten percent (10%) of the balance of the watershed may be developed for non-residential and multi-family uses to seventy percent (70%) built-upon area on a project-by-project basis, provided that the following conditions are met:
         (a)   For the purpose of calculating built-upon area, total project area shall include total acreage in the tract on which the project is to be developed;
         (b)   The Village Council must approve the Special Intensity Allocation in accordance with any adopted policies it has related to the distribution of the Special Intensity Allocation;
         (c)   Projects must minimize built-upon surface area and incorporate Best Management Practices to minimize water quality impacts.