HUNTINGTON BEACH, Calif.—No additional sheen was observed today near site of the October oil leak that spilled thousands of gallons of oil into the ocean off Huntington Beach, but the area will remain under observation, officials said. The U.S. Coast Guard said Saturday that crews observed a “light sheen” measuring about 30-by-70 feet in the same area as the October leak as they prepared to work on the damaged oil pipeline and replace syntho-glass wrap being used to secure broken pipe. The underwater pipeline has remained shut down since the initial incident on Oct. 2. “Crews who were scheduled to conduct work on the pipeline observed and reported a sheen estimated at 30 feet by 70 feet in size,” according to a statement from the Unified Command, which consists of the Coast Guard and the California Department of Fish and Wildlife. “Divers conducting planned assessments of the pipeline discovered small …