From The Greeley Tribune (Bill Jackson):
Jon Monson, director of the city’s water and sewer department, said the city hopes to bore a tunnel underground for part of its new water pipeline from the Bellvue Water Treatment plant near Laporte, rather than dig an open trench. There are several reasons, Monson said, the least of which is that a tunnel will be less invasive to old railroad bridges, wildlife habitat and other environmental concerns dealing with restoration…
The area in question is about a quarter-mile in length. About 700 feet would be tunneled in three different locations, Monson said. “The problem is two ridges of rock, and we’ve decided it would be better to tunnel under that rock instead of trenching through it,” Monson said.
The decision doesn’t necessarily end a dispute with landowners in the area who are opposed to the pipeline going under their property. “We certainly hope this goes a long way toward ending the dispute with landowners, but they haven’t been terribly responsive” to the tunneling idea, Monson said. “We’re really trying to listen to their concerns. But they just don’t seem to want us there at all.”
Monson said the cost of tunneling is expected to be about the same as trenching because the price to restore the land and address historic and environmental concerns was substantial.