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1 Roseville Emerald Ash Borer (EAB) Program and Magnitude - Update - May2018 <br />2 <br />3 Background <br />4 The following is a summary of the Public Ash Tree inventory (not including wild areas in park <br />5 and open space)in Rosevillefrom 2010 to May of 2018: <br />6 2010 2178 Ash Trees identified on public property <br />7 2010-2017 389 public Ash Treeswere removed <br />8 May 2018 1789 public Ash Trees remain with the exception of wild areas <br />9 <br />10 EAB is rapidly increasing in Roseville. As of late 2016, the entire city isin theEABinfestation <br />11 zone. All Ash Trees are suspect and more than likely are infected with EAB or will be soon. <br />12 <br />13 The EAB approachin Rosevilleis a combination of removal, replacement and treatment. All <br />14 assumes appropriate funding. Following are the working policies of each: <br />15 <br />16 Removal Policy <br />17 Public trees that have been identified as EAB positive will beremoved. The rate of <br />18 removal has been steadily increasing. <br />19 <br />20 Replacement Policy <br />21 Locations where an EAB positive tree has been removed, it will be replaced with a tree <br />22 species identified in the Public Tree Master Plan. The planting assumes that it is still a <br />23 proper location for a tree and it is in cooperation with the adjacent property owner(s) <br />24 and the Public Works Department. <br />25 <br />26 Treatment Policy <br />27 Treatments are only in significant areas in an attempt to slow growth of EAB while a <br />28 new canopy is started. It is anticipated that the treatment program will eventually go <br />29 away and all Ash Trees in the City of Roseville will be removed and replaced. <br />30 <br />31 Five Year Public Ash Tree Activity <br />32 The public Ash Tree work for a five year period beginning in the springof2013 (initial discovery) <br />33 through spring of 2018 includes the following: <br />34 250 Ash Trees were removed with city funds at a cost of $59,355. <br />35 139 Ash Trees were removed with grant funds at a cost of $60,433 <br />36 17 trees were replaced with city funds at a cost of $7100. <br />37 163 trees were replaced with grant funds at a cost of $64,054 <br />38 250 significant Ash Trees were treated at parks and other city property with city <br />39 funds at a cost of $38,100 or average of $7600 per year. <br />40 o This represents nearly three (2 year) cycles over a 5 year period <br />41 <br />42 <br />43 <br />44 <br />1 <br /> <br /> <br />