Laserfiche WebLink
  <br />City of Sunny Isles Beach | Invitation to Bid No. 17‐05‐01  42    <br />  <br /> <br />The Collins Avenue median is irrigated through a ‘wethose’ subsurface irrigation system <br />supplied by City water meters, with the exception of median island ‘bullnoses’ which are <br />watered with overhead irrigation. <br /> <br />3.7.3 ON-GOING MAINTENANCE <br /> <br />Required on-going maintenance as follows: <br /> <br />Weekly: Contractor is to visually inspect all irrigated areas once per week to identify <br />potential leaks as evidenced by water related plant stress, surface water, <br />dry spots, correct spray patterns, prevention of overspray on pavement, <br />head clogging and retracting, broken or damaged equipment, and paved <br />surfaces and walls affected by irrigation spray. <br /> <br />Monthly: Turn system on with controllers and check program. Adjust program as <br />needed for seasons, new plantings, and weather conditions. Verify that <br />system is running 20 minutes on and 20 minutes off, per cycle, to prevent <br />‘wethose’ hydration (decrease leak rate). Suggested frequency of <br />watering (will vary based on rainfall) is 5 cycles per day/5 days per week <br />during dry season and 4 cycles per day/3 days per week during wet <br />season. Visually inspect valves, filters, and backflow preventers for <br />malfunction or damage and repair as needed. With system running, <br />visually inspect for PVC pipe breaks or ‘wethose’ needing repairs. Always <br />make repairs to all PVC or ‘wethose’ pipe after flushing the pipe. After <br />repairs are complete, turn the system on to verify that no additional work <br />is required. The Contractor shall also conduct meter readings to verify <br />viability of systems at least once per month <br /> <br />Quarterly: In addition to monthly maintenance schedule, open flush ports and let <br />water run a minimum of 3 minutes. Check filter elements for excess <br />residual and replace if needed. <br /> <br />Annually: In addition to monthly maintenance schedule, replace filter elements and <br />controller batteries. Chemically flush system using ‘Disolve’ (this process <br />will remove iron, calcium, and other buildup on the inside of the ‘wethose’ <br />and PVC pipe). <br /> <br />Accidental: Accidental damage to system – Follow the monthly procedure and be <br />mindful to always flush the system before and after making repairs. <br /> <br />3.7.4 CONVENTIONAL IRRIGATION SYSTEMS <br />