STOCKTON — University of the Pacific ranked fourth among the top five schools with the highest percentage of campus-owned vehicles that are 100 percent electric, according to a survey by the Environment America Research and Policy Center.Pacific checked in at 73.9 percent behind No. 1 Ringling College of Art and Design in Florida at 85.4 percent, California State University, San Marcos, at 78.9 and Rice University in Texas at 75.8.