Shawn Pomrenke

A star on Discovery Channel's "Bering Sea Gold: Under the Ice" has been popped for DUI ... again ... after driving at breakneck speeds and blowing almost twice the legal limit ... TMZ has learned. Shawn Pomrenke was busted in Nome, Alaska ... it happened last month but we just learned of it. Shawn…

One of the stars of the new Discovery Channel show "Bering Sea Gold" has been arrested on suspicion of DUI -- after allegedly backing into a pedestrian and fleeing the scene, TMZ has learned. Shawn Pomrenke -- who is the co-owner of the biggest gold dredge on the show -- was arrested on December…