A. Irrigation.
1. All new single-family and multi-family development, excluding additions and infill development, shall comply with the following requirements.
a. Sprinklers and sprays shall not be used in areas less than eight (8) feet wide.
b. Sprinkler heads with a precipitation rate of .85 inches per hour or less shall be used on slopes exceeding fifteen percent (15%) or on slopes exceeding ten percent (10%) within ten (10) feet of hardscapes to minimize runoff.
c. Valves and circuits shall be separated based on water use.
d. Drip or bubbler irrigation systems are required for trees. Bubblers shall be used that do not exceed one and one-half (1 1/2) gallons per minute per device.
e. Sprinkler heads must have matched precipitation rates within each control valve circuit.
f. Check valves are required where elevation differences may cause low head drainage.
g. Sprinkler head spacing shall be designed for head-to-head coverage. The system should be designed for minimum runoff and overspray onto nonirrigated areas.
h. All irrigation areas shall be equipped with a controller capable of dual or multiple programming. Controllers must have multiple cycle start capacity and a flexible calendar program.
i. All irrigation systems shall be equipped with rain shut-off devices.
2. All other development not addressed in Section 17.44.080A.1. above, including but not limited to new non-residential development, mixed-use development, infill development, and additions to existing development shall comply with the following:
a. A low-pressure irrigation system shall be provided in thirty percent (30%) of all landscaped areas.
b. Automatic programmable controllers with check valves shall be installed in sloping areas with elevation differences of more than five (5) feet as defined from the toe to the top of slope.
c. Landscape materials with the same watering needs shall be grouped together and irrigated through separate control valves.
d. Irrigation systems shall be design to avoid runoff, excessive low head drainage, overspray, or other similar conditions where water flows or drifts onto adjacent property, non-irrigated areas, walks, roadways, or structures.
e. The annual maintenance program with seasonal watering schedule shall be laminated and permanently posted in or near the control box on-site.
B. Maintenance of Required Planting Areas. Required planting areas shall be permanently maintained by water, clearing debris and litter, weeding, pruning, insect control, and replacement of plant materials and irrigation equipment as needed to preserve the health and appearance of plant materials. All landscaping shall be maintained in such a manner as to not restrict designated pedestrian access. All trees, shrubs, and plants which, due to accident, damage, disease, or other cause, fail to show a healthy growth shall be replaced, in kind, pursuant to the approved landscape plans within thirty (30) days from the identified damage date. (Ord. 2010-02 § 1 (part), 2010)