(Isaac Brekken/Associated Press)

The agency, whose lavish 2010 conference in Sin City drew controversy — and led to the firing or discipline of eight officials — was slated to go back to the scene of the proverbial crime later this month. But alas for slots lovers, the GSA has cancelled “GreenUP 2012 Training Conference and Vendor Showcase,” set to take place in a Vegas hotel on April 25.

A spokesman says the event has been axed, noting that acting Administrator Dan Tangherlini promised in a letter to employees to review all of its upcoming conferences “that involve travel or substantial expenditures of public funds.”

The confab was supposed to bring contractors and GSA workers together to learn about eco-friendly products and services, from plug-in cars to green paper products.

It was only a one-day event, without the lavish entertainment (clowns! a mentalist!) that the now-notorious conference did. Which is the subject of a House hearing on April 16, by the way.

And it would have been a lot less splashy, since the venue — the relatively modest Hampton Inn Tropicana — can’t hold a candle to the luxe M Resort Spa Casino, where the 2010 shenanigans went down.

Hope the security deposit wasn’t too big.

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