The terminal itself enjoys widespread support, but local residents and environmentalists worry that the details of dredging remain murky.

San Clemente officials are working with a consultant who’s preparing to launch a seven-day sand dredging investigation to find a nearby, offshore sand source to widen the city’s dwindling beaches.

Dredging of the Cleveland Harbor by the U.S. Army Corps of Engineers, Buffalo District and its contractor will begin May 1, ...