The South Coast Water District will hold a board workshop Tuesday in Laguna Beach to discuss the proposed Doheny Ocean Desalination Project. District staff will update board members about desalination studies, placement of slant wells, hydrology, alternative power supplies and cost estimates. South Coast, which serves customers in South Laguna, Dana Point, San Juan Capistrano and San Clemente, proposes a 5-acre facility on 30 acres of district-owned property near San Juan Creek.