Renovations to the 69-year-old Chemistry Building on the University of Arkansas at Fayetteville campus have been put on hold. The school has cost concerns about the project. The work is estimated to cost 17 million dollars, and the university has four million dollars on hand, plus two million dollars each from a bond sale and a federal grant. Officials say the remaining costs were to be financed through a bond issue. But the university is waiting to see how much legislators allocate in the state portion of its budget before proceeding. The three-story masonry building was completed in 1935. It is one of eleven campus buildings on the National Register of Historic Places. The Chemistry Building was vacated in the spring, and classrooms and faculty offices were relocated.