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1.6.3 WATER CONSERVATION The Contractor shall turn off irrigation system during periods of rainfall and times when suspension of irrigation is desirable to conserve water while remaining within the guidelines of horticulturally acceptable maintenance practices as determined by the City of Santa Ana. When the City of Santa Ana acknowledges the necessity to turn on the water once again, all controllers shall be activated within twenty-four (24) hours. After 24 hours, the City of Santa Ana at his discretion may elect to activate the controllers with City forces. 1.6.4 IRRIGATION SYSTEM MONITORING & INSPECTION All irrigation systems shall be inspected and adjusted on a weekly basis or more frequently as required, considering the water requirements of each remote control valve. The Contractor shall physically inspect (by manual or semi -automatically running the Controller) the operation of all systems weekly. The Contractor shall maintain all sprinkler systems in such a way as to guarantee proper coverage and full working capability, and make whatever adjustments are necessary, including but not limited to, adjustment of heads or inserts, or replacing of inserts, etc., to prevent excessive over spray/runoff into street right-of-ways or other areas not intended to receive irrigation over spray/runoff. Controllers shall be programmed to water during nighttime hours between approximately 10:00 p.m. and 4:00 a.m. or upon request/when required. Contractor shall observe and note deficiencies occurring from the original design of facilities and review these findings with the City of Santa Ana so necessary improvements can be considered. Authorization must be obtained from the City before proceeding with work not covered under normal maintenance work and the malfunctioning sprinkler system area shall be irrigated by a portable irrigation method until all authorized repairs have been completed to the City's satisfaction. All areas receiving marginal coverage shall be irrigated by a portable irrigation method. The Contractor shall furnish all hoses, nozzles, sprinklers, etc., necessary to accomplish this supplementary irrigation. Care shall be exercised to prevent waste of water, erosion, and/or detrimental seepage into existing underground improvements or structures. Contractor shall submit a quarterly (or upon request) irrigation report to the City of Santa Ana. The report shall be of the format required by the City of Santa Ana and shall include, but not be limited to, controller location, address, type of controller, number of stations, and schedule for each station, turf, ground cover or shrub irrigation, condition of site, and repairs made for each station. Contractor shall provide irrigation personnel fully trained in all phases of landscape irrigation systems operation, maintenance, adjustment, and repair. This is to include diagnosis and repair of controllers, valve wires, control valves, lateral lines, gate valves, main lines, strainers, pressure regulators, backflow devices, moisture sensors, master valves, and electric pedestals. Contractor shall maintain an adequate stock of medium and high usage items for repair of all irrigation systems. Automatic controllers and/or enclosures shall be locked while unattended. Contractor shall maintain a log at each controller location. Contractor shall provide efficient use of water at all times. The controllers shall be programmed and monitored to maintain adequate moisture, optimal for growth and appearance, while eliminating City of Santa Ana - RFP 10-048 Landscape Maintenance Services of Water Facilities and Santa Ana Regional Transportation Center 24