Live Nation voluntarily agreed to cancel its next electronic dance music concert and will drastically limit a follow-up festival in October, following pressure from Los Angeles County’s Board of Supervisors.

The event promoter will cap attendance at 40,000, bar people under 21 years old, and reduce the hours of Hard’s Day of the Dead Festival at the end of October, according to Supervisor Hilda Solis’ office.

The limitations come after two women, Tracy Nguyen, 18, and Katie Dix, 19, died from suspected drug overdoses at Hard Summer Festival at the county-owned Fairplex in early August. The Fair Association and Live Nation, facing the possibility of an EDM festival ban, agreed to make the changes once the board of supervisors began investigating a moratorium. The concession includes the cancellation of “A Night of a Fairplex,” a one-night electronic dance music concert scheduled for Sept. 10.

Law enforcement and local legislators have called the 65,000 person Hard Summer Festival “unmanageable,” particularly when it comes to curbing drug abuse.

Hard Day of the Dead, a two-day festival starting on Halloween, promises increased security, medical services and access to free water. Live Nation also agreed to produce and distribute drug education at the festival, according to Solis’ office.

An investigation by this newspaper found the county failed to distribute educational materials it produced following a similar backlash in 2010. Drug policy advocates previously praised that shelved campaign as ahead of its time and indicated that more education is crucial to stopping ecstasy overdoses at EDM events.

Solis said the county is considering creating another specialized rave taskforce, similar to the one in 2010, that includes representatives from various county agencies.

“While the Board supports music events in the County, what is of paramount importance is the health and safety of the youth attending these events,” the statement from Solis’ office said.

Tony Bell, spokesman for Supervisor Mike Antonovich’s office, said the changes are just the beginning and that the supervisor remains concerned about festivals having properly trained security staff, adequate medical personnel and enough access to water. The county plans to collect more data before making a final decision.

“This is certainly not the end of the story, there will be additional discussions, additional research and additional corrective actions moving forward,’ Bell said. “This is an evolving review, we’re not through with the assessment yet.”

The county has refused to release a “confidential” report on the possibility of banning EDM festivals, citing attorney-client privilege. A summary provided by the county states that the report covers whether a “permanent or temporary ban” should be considered and whether it could breach contracts with Live Nation. It also focuses on whether such a ban would violate the first amendment by restricting musical expression.

The summary, which does not provide answers to those questions, notes that Live Nation and the Fair Association presented a proposal to enhance “safety and security” before the report returned to the board.

“Festival organizers and promoters are pleased to have worked quickly with the County Supervisors in order to complete the County’s inquiry and bring about the agreed upon modifications to our operations for HARD Day of the Dead at Fairplex, which will further our fans to have a safe and fun time,” said Alexandra Greenberg, a spokeswoman for the promoter.