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New signage decorates the fence at the Heather Farm Shell in Walnut Creek, Calif., on Thursday, March 7, 2013. Lottery officials were at the station early Thursday after the winning ticket in a $33 million Super Lotto drawing was purchased there on Wednesday. (Susan Tripp Pollard/Staff)

WALNUT CREEK -- Postal worker Carol Westover stepped inside the tiny store at a Walnut Creek gas station with a big hug for station manager Deep Singh.

"Way to go!" she said as she embraced Singh, who found out Wednesday night that the Heather Farm Shell station at 1790 Ygnacio Valley Road had sold the winning ticket in a $33 million Super Lotto drawing.

Was Westover still dreaming that he'd sell her a winning ticket someday?

"We always have a plan if we win," she joked as she handed over his mail.

Singh was hanging banners reading "Millionaire Made Here" Thursday after finding out that the store had sold what was believed to be the biggest jackpot ever won in Walnut Creek, he said.

"I found out last night. ... I was so excited," he said. "I called my boss and left him a message. He called this morning and said, 'Are you sure?'"

The store's owner will be $165,000 richer for having sold the ticket. Merchants receive the equivalent of one-half of 1 percent of the prize for selling a winning jackpot ticket.

Taken as a lump-sum payment, the jackpot would come to about $23.8 million before taxes, according to lottery spokeswoman Donna Cordova. The winner has not yet stepped forward, she said; they have until Sept. 2 to claim the prize.

The winning numbers were 1, 2, 3, 22 and 34, with a Mega number of 8.

The last winning Super Lotto ticket was also sold in the Bay Area, Cordova said. A $23 million jackpot was awarded to retiree Robert Imbellino after he bought the ticket at a South San Francisco pharmacy.

Singh said the Walnut Creek station sells about 30 to 50 tickets a day, though he expected that number to rise as word spread about the win.

The odds of winning a Super Lotto jackpot are about one in 41 million.

Of course, as Singh noted while paraphrasing the California Lottery's ad slogan, "If you're not going to play, you're not going to win."

Contact Daniel M. Jimenez at djimenez@bayareanewsgroup.com. Follow him at Twitter.com/DMJreports.