75A - PH - WATER EFFICIENT LANDSCAPING

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(2) recognize the horticultural attributes of plants (i.e., mature plant size, invasive surface roots) to minimize damage to property or infrastructure (e.g., buildings, sidewalks, and power lines); and (3) consider the solar orientation for plant placement to maximize summer shade and winter solar gain. (D) Turf is discouraged on slopes greater than 25% where the toe of the slope is adjacent to an impermeable hardscape and where 25% means 1 foot of vertical elevation change for every 4 feet of horizontal length (rise divided by run x 100 = slope percent). (1) All turf selections shall be drought tolerant varieties with minimal water requirements. (E) The use of invasive plant species and/or noxious plant species is strongly discouraged. (F) The architectural guidelines of a common interest development, which include community apartment projects, condominiums, planned developments, and stock cooperatives, shall not prohibit or include conditions that have the effect of prohibiting the use of water efficient plant species as a group. (G) Water Features (1) Recirculating water systems shall be used for water features. (2) Where available and consistent with public health guidelines, recycled water shall be used as a source for decorative water features. (3) The surface area of a water feature shall be included in the high water use hydrozone area of the water budget calculation. (4) Pool and spa covers are highly recommended. (H) Mulch and Amendments (1) A minimum two inch (2") layer of mulch shall be applied on all exposed soil surfaces of planting areas except in turf areas, creeping or rooting groundcovers, or direct seeding applications where mulch is contraindicated. (2) Stabilizing mulching products shall be used on slopes. (3) The mulching portion of the seed/mulch slurry in hydro-seeded applications shall meet the mulching requirement. 8 75A-37