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January 11, 2016 <br />residential irrigated landscapes of 1,000 sq. ft. but not more than <br />5,000 sq. ft. (the level at which Water Code 535 applies) and <br />residential irrigated landscapes of 5,000 sq. ft. or greater. A <br />landscape water meter may be either: <br />1. A customer service meter dedicated to landscape use provided <br />by the local water purveyor; or <br />2. A privately owned meter or sub meter. <br />(b) Automatic irrigation controllers utilizing either evapotranspiration <br />or soil moisture sensor data with non - volatile memory shall be <br />required for irrigation scheduling in all irrigation systems, <br />recommending U.S. EPA WaterSense labeled devices as <br />applicable. <br />(c) Sensors (rain, freeze, wind, etc.), either integral or auxiliary, that <br />suspend or alter irrigation operation during unfavorable weather <br />conditions shall be required on all irrigation systems, as <br />appropriate for local climatic conditions. Irrigation should be <br />avoided during windy or freezing weather or during rain. <br />(d) If the water pressure is below or exceeds the recommended <br />pressure of the specified irrigation devices, the installation of a <br />pressure regulating device is required to ensure that the dynamic <br />pressure at each emission device is within the manufacturer's <br />recommended pressure range for optimal performance. <br />1. If the static pressure is above or below the required dynamic <br />pressure of the irrigation system, pressure - regulating devices <br />such as inline pressure regulators, booster pumps, or other <br />devices shall be installed to meet the required dynamic <br />pressure of the irrigation system. <br />2. Static waterpressure, dynamic or operating pressure, and flow <br />reading of the water supply shall be measured at the point of <br />connection. These pressure and flow measurements shall be <br />conducted at the design stage. If the measurements are not <br />available at the design stage, the measurements shall be <br />conducted at installation. <br />(e) BacWow prevention devices shall be required to protect the water <br />supply from contamination by the irrigation system. A project <br />applicant shall refer to the applicable City code (i.e., public health) <br />for additional backflow prevention requirements. <br />(f) A master shutoff valve shall be as close as possible to the point of <br />connection and is required on all projects; with the exception for <br />13 <br />75C -39 <br />