19.570.130

Other

• Compost incorporation depth6 inches

  Incorporate compost at a rate of at least four cubic yards per 1,000 square feet to a depth of six inches into landscape area.

• Compost application rate4 cubic yardscubic yard (cy)A unit of earth volume used in grading limits — roughly one dump-truck scoop. per 1000 sq ftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  Incorporate compost at a rate of at least four cubic yards per 1,000 square feet to a depth of six inches into landscape area (unless contra-indicated by a soil test).

• Controller power loss protection

  Irrigation controllers shall be of a type which does not lose programming date in the event the primary power source is interrupted.

• Automatic irrigation controller

  Automatic irrigation controllers are required and must use evapotranspiration or soil moisture sensor data.

• Irrigation emission device standard

  All irrigation emission devices must meet the requirements set in the ANSI standard, ASABE/ICC 802-2014, 'Landscape Irrigation Sprinkler and Emitter Standard.' All sprinkler heads installed in the landscape must document a distribution uniformity low quarter of 0.65 or higher using the protocol defined in ASABE/ICC 802-2014.

• Dedicated landscape meter

  For nonresidential projects with landscape of 1,000 square feet or more, a dedicated landscape meter(s) provided by the local water purveyor to measure landscape water use shall be installed.

• Manual shut-off valve

  Manual shut-off valves (such as a gate valve, ball valve, or butterfly valve) shall be installed as close as possible to the point of connection of the water supply.

• Maximum slope for turf

  Turf shall not be planted on sloped areas which exceed a slope of one foot vertical elevation change for every four feet of horizontal length.

• Maximum turf area25 percent

  Turf shall not exceed 25 percent of the landscape area in residential areas, and there shall be no turf in nonresidential areas.

• Minimum mulch depth3 inches

  A minimum three inch 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.

• Irrigation for narrow areas

  Areas less than ten feet in width in any direction shall be irrigated with subsurface irrigation or other means that produce no runoff or overspray.

• Average plant factor0.3 WUCOLS factor

  For residential areas, install climate adapted plants that require occasional, little or no summer water (average WUCOLS plant factor 0.3) for 75 percent of the plant area excluding edibles and areas using recycled water; For nonresidential areas, install climate adapted plants that require occasional, little or no summer water (average WUCOLS plant factor 0.3) for 100 percent of the plant area excluding edibles and areas using recycled water.

• Pressure regulator requirement

  Pressure regulators shall be installed on the irrigation system to ensure the dynamic pressure of the system is within the manufacturers recommended pressure range.

• Minimum parkway width for turf10 feet

  Turf is prohibited in parkways less than ten feet wide, unless the parkway is adjacent to a parking strip and used to enter and exit vehicles. Any turf in parkways must be irrigated by sub-surface irrigation or by other technology that creates no overspray or runoff.