In Fernley, (everyone leaving Burning Man goes near or through Fernley) Fernley sanitation will be open through the Labor Day weekend. The office phone there is 775-575-4964, however the office (but not dump) is closed on weekends. Their rate is $3.85 per cubic yard.
To reach Fernley Sanitation from Eastbound I-80, take the first (most westerly) Fernley exit and proceed right (south) to "downtown" Fernley. Turn right (at stop light) onto Hiway 95 (towards Silver Springs). Proceed a couple of miles and cross the canal. Turn left onto the dirt road at building with "Public Refuse Disposal" on its face. This building is reportedly between the High School and Fernley Redi-mix.