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<br />Memorandum <br />To: Joe Stevens, Director of Parks and Recreation <br />From: Chris Lichty, City Forester <br />Date: August 13th, 3013 <br />Re: Root Pruning at Coal Creek Golf Course <br />This memo details the specification for installation of root barrier at four greens at Coal Creek Golf <br />Course. The four greens identified for root pruning and installation of root barrier are: #18 Green, <br />Practice Green, #5 Green and #6 Green. Each attached map shows the location and linear feet of <br />barrier required. Distance to base of effected trees is also shown. <br />After consultation with Chris Swim, Superintendant of Agronomy at Lakewood Country Club, the <br />method of installation and types of barrier were determined. A trench 2 feet deep is dug with a <br />common irrigation trencher. Larger roots encountered are cut smooth using a pruning saw or loppers. <br />The barrier is installed vertically in the trench and backfilled appropriately. Many types of barriers were <br />discussed. The best results come from using an herbicide impregnated barrier installed at the full 2 <br />feet depth. The product most common for this type of application is BioBarrier. It is available in widths <br />of 24 inches and is roughly $5 per foot. It is impregnated with a slow release form of Trifluralin, a very <br />low toxicity herbicide which does don’t leech readily. <br />The total linear feet of barrier installation for the four specified green is roughly 435 ft. This would <br />equate to $2175 in material costs. The City can rent a trencher and use in-house staff to dig the <br />trenches. The cost of renting a trencher for a couple days would be around $500. A crew of three <br />should be able to accomplish the installation in couple days. <br />It would be best to do the installation during the late fall or early winter of 2013. After installation, we <br />can monitor the greens for improved turf growth and overall health. <br /> <br />On another note, tree replacement is proceeding and should be completed in late August, early <br />September. The City will have an additional one year warranty for these replaced trees. <br /> <br />Please let me know if you have questions or need additional information! <br /> <br />Chris Lichty, City Forester <br />City of Louisville, Colorado <br />(303) 335-4733 <br />ChrisL@louisvilleco.gov <br /> <br />Attachments: 4 maps <br /> <br />PARKS & RECREATION <br /> <br />6