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(1) Irrigation plan design and installation shall meet the minimum standards and rules of the <br />Texas Administrative Code. <br />(2) Beginning January 1, 2010, either a licensed irrigator or a licensed irrigation technician as <br />defined by Title 30, Texas Administrative Code, Chapter 30 and required by Chapter 1903 of the <br />Texas Occupations Code, or as defined by Chapter 365, Title 22 of the Texas Administrative <br />Code and required by Chapter 1301 of the Texas Occupations Code, shall be on -site at all times <br />while the landscape irrigation system is being installed. When an irrigator is not on -site, the <br />irrigator shall be responsible for ensuring that a licensed irrigation technician is on -site to <br />supervise the installation of the irrigation system. <br />(3) Completion, maintenance, alteration, repair, or service of irrigation systems shall comply <br />with the landscape irrigation rules promulgated by the Texas Commission on Environmental <br />Quality and contained in Chapter 344, Subchapter A, § 344. 1, Subchapter C, §§ 344.30- 344.38, <br />Subchapter D, §§ 344.40- 344.43 and Subchapters E and F, §§ 344.50- 344.65 Texas <br />Administrative Code (effective January 1, 2009), as the same may be from time to time <br />amended. <br />(i) In addition to the requirements under 30 TAC Chapter 344, all new landscape irrigation <br />systems must be designed, installed and operated in accordance with the following requirements: <br />(1) Above - ground emission devices must be attached to lateral lines with flexible pipe or swing <br />joints. <br />(2) Use of shrub risers is prohibited. Surface or subsurface drip irrigation, or low -angle spray <br />heads that direct water to the base of the plant may be used in lieu of shrub risers. <br />(3) Irrigation controllers must be capable of providing multiple irrigation programs, with at <br />least three start times per program. <br />(4) Irrigation controllers must be capable of limiting irrigation frequency to once every seven <br />days and once every 14 days as per drought restrictions. <br />(5) Irrigation controllers must have a water budgeting feature. <br />(6) Landscape irrigation systems must have a master valve. <br />(7) Zone valves must be equipped with an adjustable flow control. <br />(8) Zone valves must be enclosed in an accessible valve box. <br />(9) Check valves are required where elevation differences may result in low -head drainage. <br />Check valves may be located at the sprinkler head(s) or on the lateral line. <br />