<html><head><base href="x-msg://6/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Gina<div><br></div><div>In Washington DC, the National Park Service has a long history of changing use patterns and event requirements to save the trees around the National Mall. A recently adopted Mall Master plan has a lot of policy towards that end. </div><div><br></div><div>See</div><div><br></div><div><a href="http://www.nps.gov/nationalmallplan/National%20Mall%20Plan.html">http://www.nps.gov/nationalmallplan/National%20Mall%20Plan.html</a></div><div><br></div><div>to get the plan document and more information.</div><div><br></div><div>Jim Urban<br><div><div>On Aug 10, 2012, at 12:02 PM, Gina Brouwer wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div fpstyle="1" ocsi="0"><div style="direction: ltr; font-family: Tahoma; color: rgb(0, 0, 0); font-size: x-small; "><div style="margin-top: 0px; margin-bottom: 0px; ">Hello,</div><div style="margin-top: 0px; margin-bottom: 0px; ">I am a part-time student in the Master of Forest Conservation program at U of Toronto and I will be completing my final research paper this coming fall semester. I have been doing studies for the Town of Cobourg throughout this program including tree inventory, EAB Management Plan and coordination of their Heritage NeighbourWoods pilot program this past summer with the town arborist. </div><p style="margin-top: 0px; margin-bottom: 0px; "> </p><div style="margin-top: 0px; margin-bottom: 0px; ">I am starting to conduct background research for my final paper which will focus on mature and heritage tree preservation and management options. I am looking at mature boulevard trees in the heritage dristrict as well as mature trees in Victoria Park along the Cobourg beach. Of particular concern are the park trees and the impact of increased park use and major festivals primarily relative to soil compaction. There has also been media attention lately surrounding the impact of 'Ribfest' due to heat and grease. The main park study area has recently seen the death of two mature elms due to DED and branch union failure of large silver maples. The remaining mature trees are primarily silver maple, a butternut and some massive cottonwood along the boardwalk which have been getting attention as heritage candidates from council and the community. </div><p style="margin-top: 0px; margin-bottom: 0px; "> </p><div style="margin-top: 0px; margin-bottom: 0px; ">I have not yet found much background information, guidelines or precedents on managing user impacts in public urban parks and would appreciate any experience or insight this group can share. The Town has started doing some investigation this year including compaction testing around trees. Testing leading up to the Canada Day festival in dry conditions revealed extreme compaction. This will be an ongoing study to gather data under various conditions in spring and fall. There are also discussions about mitigation measures such as radial excavation and mulching. </div><p style="margin-top: 0px; margin-bottom: 0px; "> </p><div style="margin-top: 0px; margin-bottom: 0px; ">I appreciate any feedback. </div><p style="margin-top: 0px; margin-bottom: 0px; "> </p><div style="margin-top: 0px; margin-bottom: 0px; ">Many thanks! </div><p style="margin-top: 0px; margin-bottom: 0px; "> </p><div style="margin-top: 0px; margin-bottom: 0px; "><b><span style="font-family: Arial, sans-serif; color: rgb(31, 73, 125); font-size: 10pt; ">Gina Brouwer, OALA, CSLA, ISA</span></b></div><div style="margin-top: 0cm; margin-bottom: 0pt; margin-right: 0cm; margin-left: 0cm; "><span style="font-family: Arial, sans-serif; color: rgb(31, 73, 125); font-size: 10pt; ">* MFC Candidate</span></div><div style="margin-top: 0cm; margin-bottom: 0pt; margin-right: 0cm; margin-left: 0cm; "><span style="font-family: Arial, sans-serif; color: rgb(31, 73, 125); font-size: 10pt; ">Manager of Landscape Architecture</span></div><div style="margin-top: 0cm; margin-bottom: 0pt; margin-right: 0cm; margin-left: 0cm; "><span style="font-family: Arial, sans-serif; color: rgb(31, 73, 125); font-size: 10pt; ">Planning, Design and Development</span></div><div style="margin-top: 0cm; margin-bottom: 0pt; margin-right: 0cm; margin-left: 0cm; "><span style="font-family: Arial, sans-serif; color: rgb(31, 73, 125); font-size: 10pt; ">Canada Central East</span></div><div style="margin-top: 0cm; margin-bottom: 0pt; margin-right: 0cm; margin-left: 0cm; "><span style="font-family: Arial, sans-serif; color: rgb(31, 73, 125); font-size: 10pt; ">D 905.372.2121 ext.249</span></div><div style="margin-top: 0cm; margin-bottom: 0pt; margin-right: 0cm; margin-left: 0cm; "><span style="font-family: Arial, sans-serif; color: rgb(31, 73, 125); font-size: 10pt; "><a href="mailto:Gina.Brouwer@mail.utoronto.ca" target="_blank">Gina.Brouwer@mail.utoronto.ca</a></span></div><div style="margin-top: 0cm; margin-bottom: 0pt; margin-right: 0cm; margin-left: 0cm; "><span style="font-family: Arial, sans-serif; color: rgb(31, 73, 125); font-size: 10pt; "><a href="mailto:Lisa.Cullen@aecom.com" target="_blank"><span style="color: blue; ">Gina.Brouwer@aecom.com</span></a></span></div><p class="MsoNormal" style="margin-top: 0cm; margin-bottom: 0pt; margin-right: 0cm; margin-left: 0cm; "><span style="font-family: Arial, sans-serif; color: rgb(31, 73, 125); font-size: 10pt; "></span> </p><div style="margin-top: 0cm; margin-bottom: 0pt; margin-right: 0cm; margin-left: 0cm; "><b><span style="font-family: Arial, sans-serif; color: rgb(31, 73, 125); font-size: 10pt; ">AECOM</span></b><span style="font-family: Arial, sans-serif; color: rgb(31, 73, 125); font-size: 10pt; "><br>513 Division Street<br>Cobourg, ON K9A 5G6</span></div><div style="margin-top: 0cm; margin-bottom: 0pt; margin-right: 0cm; margin-left: 0cm; "><span style="font-family: Arial, sans-serif; color: rgb(31, 73, 125); font-size: 10pt; ">T 905.372.2121 F 905.372.3621</span></div><div style="margin-top: 0cm; margin-bottom: 0pt; margin-right: 0cm; margin-left: 0cm; "><span style="font-family: Arial, sans-serif; color: rgb(31, 73, 125); font-size: 10pt; ">C: 905.373.5015<br></span><span style="font-family: Arial, sans-serif; color: black; font-size: 10pt; "><a title="http://www.aecom.com/" href="http://www.aecom.com/" target="_blank"><span style="color: blue; ">www.aecom.com</span></a></span></div></div></div></blockquote></div><br></div></body></html>