SAN FRANCISCO (CBS/AP) — The Bay Area Rapid Transit Agency and two of its largest unions have returned to the bargaining table, as a cooling-off period that would avert a possible train strike on Monday looms.

BART and a union official said the two sides had gathered again on Saturday morning. BART spokesman Rick Rice said he could not comment on the status of the negotiations.

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Service Employees International Union Local 1021 spokeswoman Josie Mooney said around 11:45 a.m. the two sides were huddled up in separate rooms. Mooney said the unions were waiting to hear back from BART on a new proposal they put forward on Friday. She said she could not disclose its details.

California Governor Jerry Brown said Friday that he planned to seek a court order for a 2-month cooling off period on Sunday if the contract dispute is not resolved by then.

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His announcement came as union leaders warned commuters that they were ready to strike Monday morning for the second time this summer if they can’t reach a new contract agreement. The Bay Area commute was snarled by a 4 1/2-day strike in early July before both sides agreed to a temporary extension of the old contract.

“I urge all parties to think of the public and resolve this matter without delay, but if there’s no resolution by Sunday, I will seek a 60 day cooling-off period,” Brown told reporters.

RELATED CONTENT: Download The Governor’s Court Filing (.pdf)

If BART management and its unions fail to reach a deal over the weekend, San Francisco Superior Court will consider Brown’s injunction request at a 9 a.m. hearing Sunday at the Civic Center courthouse. If Judge Curtis E.A. Karnow agrees with the findings of the governor’s investigators, an order would be issued halting any BART strike for a period of two months.

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