PENDLETON — The Navy wants to expand military training activities at the Boardman Bombing Range in northeastern Oregon, a facility that has gained value recently for drone use.

An environmental analysis weighs possible effects of adding mortar pads, live firing ranges or a demolition training area, the East Oregonian reported Wednesday.

The proposal includes extending low-flying airspace over the Umatilla Chemical Depot, where destruction of toxic weapons has been completed.

The bombing range southwest of Boardman along the Columbia River is used by planes from the Whidbey Island Naval Air Station for low-altitude training — as low as 200 feet.

“This is a joint training range … and it’s at a premium right now,” said Capt. Jay Johnston, commander at Whidbey Island. “We don’t really have the ability to build new airspace.”

Johnston said the Boardman range has restricted airspace that’s scarce in the Pacific Northwest and is important for low-altitude electronic attack training.

The Navy has held public meetings and is taking comments until Nov. 6 on the environmental analysis.

The plan contemplates two levels of expansion beyond current activities.

It includes an increase in training activities, as well as new aircraft, ranges for machine gun and convoy fire, a maintenance building for drone systems and a landing strip.

Beyond that, the plans call for three mortar pads, a second convoy firing range and a control center.