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3 years later, Boulder showing clear signs of emerald ash borer infestation

BOULDER — The idyllic vision of a college campus is one marked and shaded by mature, historic trees – many of which are as old as the school itself. High school juniors who toured the University of Colorado’s Williams Village in 2014 saw a campus that met that criteria.

Those same students moved in surrounded by a markedly different landscape in Williams Village this fall.

Once lined by a grove of mature, 30-foot-tall ash trees, the west side of the village along 30th Street is now tree-less. The emerald ash borer (EAB) is to blame.

Just three years after the invasive pest was discovered in Boulder, the city is now starting to see the clear impact, losing hundreds of untreated ash trees to the infestation.

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