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(rr.IL GOO- C(P.RsL Phf:Lllll >.!NF L0.11G MAGI; AGL AIINIL1f Pl_I .Sig in <br />IRRIGATION SYSTEM <br />he existing irrigation system at Coal Creek III <br />I was installed in 1989 and consists of a <br />series of pipes, control satellites, sprinkler <br />heads and a pumping system which delivers <br />water to the golf course from the pump <br />station and wet well located near the pond <br />between hole No. 11 and 12. A new pump <br />station was installed in 2009 and consists of <br />two 70 horsepower vertical turbines and a 25 <br />horse booster pump. Apparently, the booster P r <br />pump is not being utilized due to a leak. The control system was updated in 2005 with <br />a state -of- the -art Rainbird computerized central control. Unfortunately, the system is not <br />being used to its fullest potential because no GPS database was prepared for programming <br />the control system. <br />The existing piping system consists of Class 160 PVC (poly vinyl chloride <br />which are now nearly 25 years old plagued by frequent leak an <br />concern is the lack of thrust blocking at fittings and the o <br />tees. The expected life cycle of PVC irrigatio <br />The original irrigation hea <br />d fittings <br />particular <br />service <br />5 and part circle heads (models <br />47 and 95) des o center however, at Coal Creek, spacing <br />varies t fe: t� ter. In addition, many heads are worn out, broken <br />or out o :t -n control and poor coverage results in over watering and <br />under w: -ring .ften times only a few feet apart. Parts for the existing heads are no <br />longer a .i!able so, in recent years, the maintenance staff has begun to replace some <br />broken heads with newer Rainbird Eagle 900 heads which offer more adjustability and <br />improved precipitation rates. <br />Lrakiu7 irri;mion heat(. <br />Broken irri„ulion head. <br />HERI -GRi NORBY GOLL Cot RsL.4,Ciiuii S P.ICI. 5 Oci )BLn 17. 2011 <br />