A Honolulu company will be paid $70 million to remove more unexploded artillery shells, grenades and other World War II ordnance from old training sites near Waimea on the Big Island.

The U.S. Army Corps of Engineers announced Tuesday that it has hired Environet Inc. to perform the next cleanup phase at the former Waikoloa Maneuver Area.

Honolulu-based Environet will have five years to clear 3,950 acres of private and state-owned property, said Lacey Justinger, spokeswoman for the Corps' Honolulu Engineer District.

Some 2,500 acres belong to Parker Ranch and are located two miles south of the Waimea-Kohala Airport, she said. The state Department of Hawaiian Home Lands owns the 450-acre balance located about two miles north of the airport, she said.