HALF MOON BAY (KCBS)— Supporters of an effort to reopen Martins Beach near Half Moon Bay filed briefs in a court case against the property’s owner, tech-billionaire Vinod Khosla.

The Surfrider Foundation wants Khosla, co-founder of Sun Microsystems, to pay upwards of $15,000 a day for every day he has closed off beach access to the public.

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At a total of 1,400 days, that works out to over $20 million. When the court case resumes in mid-July, Khosla’s attorneys plan to argue that their client willfully violated state and county laws by closing off the popular beach four years ago.

“We think it’s a very bizarre contention that the way you comply with the law is by not complying with the law,” said Surfrider attorney Eric Buescher.

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He said Khosla’s lawyers argued in court that they did not agree to seek a permit from the California Coastal Commission to close the beach, because they did not want to.

“That in our mind constitutes both a violation of the coastal act and a knowing and intentional violation of the coastal act,” Buescher said.

Khosla’s attorneys were not available for comment, but during six-day’s worth of the trial so far, they said they believed there was no need to seek state or county approval to close the beach.

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So far the trial has included a visit to Martins Beach by the judge and trial attorneys. The beach, a few miles south of Half Moon Bay, has been open to the public for 100 years. Khosla bought the land in 2008 and fenced it off.