PASCO, Wash. (AP) - Two trains have collided in a switching yard accident at Pasco and a derailed tanker car is leaking ethanol. Burlington Northern Santa Fe spokesman Gus Melonas says fire department hazmat crews and other emergency responders have evacuated the area. He says there is no threat to residential areas or sign of significant environmental damage. Three crewmen on a locomotive escaped unharmed before the crash about 3:40 a.m. Monday.