Sunday was the first day in several weeks that surfers, swimmers and kids wanting to play in the the wet sand had a green light to touch the Pacific Ocean in Coronado, but miles of beach south of there remained closed due to the huge sewage spill in Tijuana. Beaches from Avenida Lunar, one block south of the Hotel del Coronado, north to the Navy Base were declared safe Saturday evening by the San Diego County Department of Environmental Health. Testing confirmed that the water quality met state health standards.