Linkin Park, Tool, Alice In Chains, Wolfmother, Dead By Sunrise, Atmosphere, Hollywood Undead, Atreyu, Street Sweeper Social Club, Aesop Rock and Sonny, among others, will perform this Saturday (Aug. 22) at the first annual Epicenter '09 festival, to be held at the Fairplex in Pomona, Calif.

Right Arm Entertainment is producing the event. Los Angeles radio station KROQ is the official media partner and lifestyle brand Rogue is the presenting sponsor.

Right Arm Entertainment's Del Williams says he expects about 30,000 fans to attend the festival. General admission tickets cost $75 and VIP passes are $125.

"The way festivals have paced this year is that the week of the show, they seem to really start to increase ticket sales and even have great walk-ups, because people are waiting until very late in the process to give up their money," he tells Billboard.biz.