The news about the price at the pump got even worse today. Since March 8, South Carolina drivers have been paying an additional 17 cents. “Spring is a difficult time for drivers, when gas prices typically rise due to refinery maintenance,” said David Parsons, president and CEO of AAA Carolinas. Beyond seasonal maintenance, refineries must also make the switch to summer fuel blends by May 1. About 90% of gas in the Carolinas comes from refineries along the Gulf Coast. Gas prices are expected to continue to rise until refinery maintenance is complete, likely by the end of this month. Although demand continues to rise with warmer weather, the increased production will allow supply levels to keep up with that demand.