YAVAPAI COUNTY PLANNING AND ZONING ORDINANCE Page 64 i. Other innovative sustainable development practice within the intent and purpose of this Section, as determined by the Development Services Director. Individual Lot Items j. Rainwater harvesting facilities that capture a majority of rainwater for all homes including but not limited to roof drain plumbing, rain barrels and site grading. k. Use of gray water systems in all single-family residences according to ADEQ Type 1 Reclaimed Water General Permit (AAC R18-9-711) 13 Best Management Practices. l. Employment of measures to ensure hydrologic protection including but not limited to sedimentation basins and pervious driveway surfaces for all homes. 3. The maximum density established by Section 441.C.3 may be increased to a value equal to the maximum density multiplied by a factor of 2.0 when nine (9) out of the twelve (12) conservation and sustainable design elements required by Section 441.D.1 and nine (9) out of the following twelve (12) conservation and sustainable design elements are incorporated within the development. Land Development Items: a. Centralized Water System. b. Sewer Treatment Plant. c. Provision of a minimum of ten percent (10%) additional open space. d. Use of pervious concrete on a majority of paved surfaces with the development, excluding roadway surfaces. e. Orientation of eighty percent (80%) of lots to optimize solar and reduce heat gain (general north/south orientation). f. Impermeable surfaces designed to direct all on-site storm water run-off toward an appropriate permanent infiltration feature such as a vegetated swale, on-site rain garden or rainwater cistern. g. Irrigation of common area landscaping primarily with reclaimed water. h. Retention of all on-site water from interior roads from storm events up to and including the One Hundred (100) Year Two (2) Hour Storm Event and creative uses of retention such as water harvesting and cisterns for landscape watering. i. Native plant re-vegetation utilizing displaced native plants or approved plants native to the area. j. All painted surfaces shall not exceed a Light Reflective Value (LRV) of forty (40). k. Other innovative sustainable development practice within the intent and purpose of this Section, as determined by the Development Services Director. Individual Lot Items: l. Solar energy facilities serving each residential unit. 4. For projects choosing to incorporate any of the individual lot items listed in Section 441.D.1 and Section 441.D.2, a covenant shall be recorded applicable to each lot within the project with the intent of informing future lot owners of the additional construction requirements of this Section. The developer shall also be required to provide notice