Reno - Firefighters at the edge of the Sierra Nevada are trying to contain a pair of brush fires that have burned nearly 12 square miles near where the U.S. Bureau of Land Management national director nominee lives.

The Sierra Front Interagency Dispatch Center says about 600 firefighters are battling the Trailer 1 and Red Rock fires north of Reno along U.S. 395 near the California line and where former Nevada state BLM director Bob Abbey lives.

The agency says a voluntary evacuation for residents in parts of Rancho Haven has been lifted, and no homes are immediately threatened.

The Trailer 1 fire has burned about 1,500 acres of grass, and was 30% contained. The larger Red Rock fire is estimated at 6,200 acres, with 10% containment.