According to toolman1414 from Toolarmy:
I joined the KROQ street team yesterday and not only do you get presale but the general admission tix are $10 cheaper. It starts tomorrow (10-24-09) at 10:00am for the radio presale. Password is: KROQEPICENTER
This is for the Epicenter Festival in Pomona, CA on August 22nd and tickets are via Ticketmaster. Good luck getting tickets to possibly Tool‘s only West Coast gig.
Update: Tickets may be available now via the Linkin Park pre-sale. Use the password LPU8EPIC