San Bruno, California major shopping centers, Bayhill (located on the old U.S. Navy property between San Bruno Avenue and Sneath Lane) and Tanforan. With final approval by the San Bruno City Council, construction proceeded on these major retail developments. Prior to these developments, most of the city's retail businesses were located on San Mateo Avenue and El Camino Real. San Bruno is one of two cities in the Bay Area that manages its own cable TV and internet system. The October 17, 1989, Loma Prieta earthquake (6.9 magnitude) caused some damage in the city. The U.S. Postal Service's Western Regional headquarters, then the
1989 Loma Prieta earthquake for the northern San Andreas Fault segment, the San Francisco Peninsula segment, and a portion of that segment which was referred to as the southern Santa Cruz Mountains segment. The thirty year probability for one or more M7 earthquakes in the study area was given as 50%, but because of a lack of information and low confidence, a 30% probability was assigned to the Southern Santa Cruz Mountains segment. Two moderate shocks, referred to as the Lake Elsman earthquakes by the USGS, occurred in the Santa Cruz Mountains region in June 1988 and again in August 1989. Following each event,