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Attachment c <br />Summary of Lake Orange Repair and Maintenance Costs <br />February 2012 <br />For much of the last decade, the yearly maintenance costs at Lake Orange have consisted <br />of the cost of mowing the dam. Until recently, the costs were averaging around $1,000- <br />$1,500 yearly. However, due to the age of the dam and its appurtenances, several repairs <br />and upgrades have been necessary during that time and more are expected in the future. <br />Following is a summary of the repairs made or anticipated so far. <br />2002 Sluice Gate repair, approx. $4,000 <br />2010 -2011 Automatic Gate and remote monitoring and operation electronics <br />installation, approx.. $100,000 (The Town of Hillsborough contributed <br />$25,000 towards this project) <br />2011 -2012 Spillway concrete repairs and flashboard replacement, approx. $80,000 <br />2012 Clearing of trees along spillway banks, approx. $25,000 <br />2012 -2013 Additional concrete repair in spillway, approx. $69,000 <br />Beyond 2013 Rehabilitation of all metal components including flashboard supports and <br />catwalk supports, regular engineering consultant inspections of dam and <br />spillway, repair /renovation to sediment structures upstream of the lake, <br />rehabilitation of two remaining manual sluice gate valves, etc., approx. <br />$10,000 - $30,000 annually for next several years. <br />NOTE: This is a summary of the money paid to outside contractors to perform these <br />repairs. This does not include any estimation of Orange County staff time or force labor <br />used in the operation and oversight of Lake Orange. <br />