A Coastal Commission hearing on whether California American Water and others can appeal the Marina city denial of a key permit for the proposed desalination project is set for July 11 in San Luis Obispo. Cal Am, two members of the Coastal Commission and two local appellants are challenging the Marina city Planning Commission’s March 7 denial of a coastal development permit for the $329 million desal project, including seven slant source water wells and associated infrastructure proposed for the CEMEX sand mining plant, and segments of a source water pipeline to the desal plant and transmission main pipeline from the desal plant located inside both the city’s jurisdiction and the Coastal Zone under the Coastal Commission’s jurisdiction.