High Quality Content by WIKIPEDIA articles! The San Ramon Valley Fire Protection District is an autonomous Special District as defined under the Fire Protection District Law of 1987, California Health and Safety Code, Section 13800. The District’s service area encompasses approximately 155 square miles (400 km2), covering the communities of Alamo, Blackhawk, the Town of Danville, Diablo, the City of San Ramon, the southern area of Morgan Territory and the Tassajara Valley all located in Contra Costa County.