Another emerald ash borer infestation has been found in the Rochester area. The Rochester Park Board was told yesterday an infected cluster of 12 - 15 trees has been confirmed on private property outside the city along Windsor Lane southwest, which is just off 40th street.

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 The first one was confirmed south of the airport near the Highway 63/I-90 interchange.

 The board was told staff is developing a plan to deal with the arrival of the destructive insect.  Staff estimates there are more than 10,000 ash trees on city boulevards and property maintained by the department.

 The board was told if nothing is done, every ash tree in the city will be dead within 7 years.  A tree that is treated is protected for 2- 3 years.

 The department is considering treating medium aged trees and replacing the rest over a period of years.  The department’s cost to remove and replace one tree is estimated at $1,000.  The chemical injection cost is estimated at $100.

Trees on private property are the responsibility of the owners.  The city will notify the owner if a tree is infected.  If it’s not removed,  the city will take care of it and bill the owner.