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Another major land speed event at the Bonneville Salt Flats has been canceled, putting the entire 2015 season in doubt.

After inspecting the famed race course in search of enough salt to set up courses and pit areas over the weekend, the Utah Salt Flats Racing Association announced on its website Monday that its World of Speed event is canceled.

The event was scheduled for Sept. 12 to 15.

"After many hours of looking for a place to run, test dragging and inspecting the Bonneville Salt Flats ... the USFRA team was unable to find a long or short course that would sustain or provide a safe venue for a 300-vehicle, multi-date event," the announcement read.

The final two major events scheduled this year on the Salt Flats are the Cook Land Speed trials, set to begin Sept. 17, and the Southern California Timing Association's World Finals, from Sept. 29 to Oct. 2. The latter group's annual Speed Week event in August was canceled earlier this year for the second straight year.

Wetter than normal weather in the West Desert, coupled with deteriorating salt conditions, and a mudslide on a portion of the famed speedway have all contributed to this year's cancellations.

The Save the Salt Coalition is holding an event Sept. 9 at 4 p.m. at Totem's restaurant, 538 S. Redwood Road, called "100 Years of Utah's Bonneville Salt Flat History."

The event will feature Bonneville historian and author Louise Noeth, who will provide background on the historic importance of the Bonneville Salt Flats.

The presentation will also include a display of some of the world's fastest land speed cars. It is open to the public.

According to Utah race car driver and builder Rick Vesco, the Bureau of Land Management's Gregg Morgan predicted in 1989 that in 30 years, there wouldn't be enough salt to sustain the Bonneville Salt Flats.

Race car drivers blame the site's depletion on decades of potash mining in the area, which they say removes salt brine to extract potash for commercial purposes.

Vesco put together the coalition after a visit to the area last October with the goal of working with government agencies and political leaders in Utah and Nevada to save the Salt Flats.

The Bureau of Land Management manages the Bonneville Salt Flats.

According to a release Monday, Vesco said his group has presented a reclamation plan, which could be implemented immediately, to the BLM's Kevin Oliver, Utah Sen. Orrin Hatch and Nevada Sens. Dean Heller and Harry Reid.

"Because of the lack of motivation on the BLM's part to aggressively deal with the issue, the potential end of the historic and speed record racing at Bonneville, as well as numerous other recreational and commercial uses is very real," wrote Vesco.

In an earlier Tribune story, Oliver, who manages the BLM West Desert District, which includes the Salt Flats, said conditions vary with the weather.

"It is a dynamic situation," he said.

Twitter @tribtomwharton