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excessive runoff. Adequate soil moisture shall be determined by visual observation, plant resiliency, and turgidity, examining cores removed by soil probe, moisture sensing devices, and programming irrigation controllers accordingly. Considerations must be given to soil texture, structure, porosity, water holding capacity, drainage, compaction, precipitation rate, runoff, infiltration rate, percolation rate, evapotranspiration, seasonal temperatures, prevailing wind condition, time of day or night, type of plant and root structure. Compensation for irrigation system monitoring and inspection shall be considered included in other items of work and no additional compensation will be allowed. 1.6.5 IRRIGATION & DRAINAGE SYSTEM MAINTENANCE Once a year during the month of March, Contractor shall wipe down the equipment in the Irrigation controller cabinet to remove all dust and dirt, clean all electrical connections, install bait traps for control of ants, replace batteries as required, clean and remove intruding soil in valve boxes and replace gravel, as originally specified. All hinges and locks shall be regularly oiled to ensure trouble free operation. All controller enclosures must be painted in approved colors, as needed, to prevent rusting and maintain good appearance. Sprinkler heads shall be kept clear of overgrowth that may obstruct maximum operation. Repairs made to the irrigation system must be made in accordance with the system's original design with products equal to or higher quality than currently provided. Workmanship shall be performed in accordance with industry standards. All leaking or defective piping, valves, or other system components shall be repaired within twenty-four (24) hours of detection. Particular attention shall be paid to all slope areas, which will, by physical nature, provide for greatest potential runoff, which can contribute to erosion. Contractor shall turn off controllers when adequate rainfall is anticipated. In the event of irrigation system failure, manual watering required to keep the plant material in a vigorous, healthy condition is to be provided by Contractor and the irrigation system shall be repaired immediately at no additional cost to the City. At no time shall Contractor utilize a fire hydrant for irrigation purposes. Contractor will keep system in operation by valve or head adjustment to keep all systems operating at manufacturer's recommended operating pressure, This shall be accomplished by valve throttling pressure gaging. The valves should be throttled to prevent sprinkler heads from fogging, allowing droplets for effective watering. The City of Santa Ana may request a coverage test to evaluate proper settings, timing, usage, or maintenance of system. City of Santa Ana - RFP 19-048 Landscape Maintenance Services of Water Facilities and Santa Ana Regional Transportation Center 25