BRC was issued a notice of noncompliance decision for exceeding the daily population cap of 50,000 allowed under terms of its special recreation permit for the weeklong celebration of radical self-expression leading up to Labor Day, said Gene Seidlitz, manager of the BLM's Winnemucca Field Office.
It's the first time Burning Man has been placed on probation since moving from San Francisco to the Nevada desert in 1990. The gathering, known for drum circles, decorated art cars, guerilla theatrics and colorful theme camps, is overseen by the BLM because it's staged on public land.
If organizers are placed on probation two straight years, Seidlitz warned, the agency may suspend or cancel Burning Man's permit and/or deny future permit applications.
He said it's important that organizers stay within the population cap because planning for law enforcement, sanitation and other services needed for the festival is based on that figure.
"It's a huge liability for BLM to ensure we have enough staff in place to do monitoring and logistical support, and for law enforcement to handle that number of participants so it's safe and secure and everyone can enjoy it," Seidlitz told The Associated Press.
BRC is appealing the agency's decision to the Interior Board of Land Appeals, which has set no timetable for reaching a decision.
Burning Man spokeswoman Marian Goodell declined to comment.
Seidlitz said Burning Man's probationary status does not jeopardize this year's event. His agency issues special recreation permits for the event on an annual basis, and has yet to grant one for this year.
The probationary status also will not delay the BLM's action on an environmental assessment concerning the effect of BRC's request to gradually increase the festival's daily population cap to 70,000 over the next five years, he said. A decision is expected by early June.
Organizers' request to increase the capacity comes after the festival sold out for the first time last year. The sell-out forced organizers to sell the bulk of this year's tickets through random drawings, but demand exceeded supply because of the event's popularity, leaving many regulars out in the cold and angry.
Goodell said organizers now hope to secure approval for the higher crowd cap. Even if the request is granted, they still would have to secure a special recreation permit each year.
Some festival neighbors fault BRC for exceeding last year's population cap, saying it was intentional.
"Here you have a multimillion-dollar business and you can't even count," said Ron Cole, owner of the Dog Ranch near the Black Rock Desert. The gathering already is having adverse impacts on the environment and traffic, he said, and should be restricted to a crowd cap of 50,000.
Both sides have submitted written arguments over the appeal to the federal appeals board.
Charles Yordy, counsel to the board, didn't immediately return a phone call.