COLUMBIA — A Jasper County Lexus dealership wants permission to fill in freshwater wetlands to increase the size of its parking lot. State regulators received a request for the project’s coastal zone consistency determination this month from Hilton Head Lexus, which is adjacent to U.S. 278 in Hardeeville. The site sits upstream of the Great Swamp, which flows into the New River. Kate Schaefer, south coast director of the S.C.