DES MOINES, Iowa (AP) – A city official says Sioux City can expect up to $11 million in damage when the insect killer of ash trees reaches the northwest Iowa city. The Sioux City Journal says parks maintenance field supervisor Kelly Bach told the City Council on Monday that it’s just a matter of time before the emerald ash borer beetle is found in Sioux City. Bach says ash trees account for nearly a third of Sioux City’s trees.

State officials said last month that an emerald ash borer had been found in a residential tree in Creston. It’s the fifth location in Iowa where the beetle has been found. The Creston sighting was the first in western Iowa.