recent eighteen-month interval have addressed the life safety issues, including replacement of the football players' facilities, and an extensive seismic retrofit of those sections not subject to fault shearing. The work was the subject of several lawsuits from neighborhood and environmental groups, who were concerned about such extensive construction on top of a major fault. During the reconstruction, the Cal Bears have played at AT&T Park in San Francisco for one season. The modifications completed in Summer 2012 involved the cutting of the stadium into four independent sections, followed by the demolition of the two segments directly over the rubble zone. The north and south ends are formed of new bridging sections that rest upon floating mats (foundations that do not penetrate the surface, rather sitting upon plastic sheets over level graded gravel and sand) where they pass over and near the fault, with appropriate sliding connections between the sections for the safety of spectators and the ability to absorb the relative rotation between the east and west fixed sections and the new north and south mobile sections. Electrical and communication system disruption Affected areas are likely to be without electrical power for an extensive period. This in turn can make fuel supplies for vehicles and emergency generators unavailable locally and impact both domestic water, industrial water, sewage plants, and drainage pumping. Due to the extensive use of point of sale scanners and registers in supermarkets this could also impact the ability of stores to sell essential items such as groceries and to preserve frozen food items, as well as terminating cable TV and most internet access. Cellphone and most landline telephone service, while theoretically survivable for a short time on battery and emergency power, could instead suffer immediate disruption from ground shaking effects. Cities affected Some of the cities in the eastern bay shore and south bay region near this fault include Richmond, El Cerrito, Berkeley, Albany, Emeryville, Kensington, Oakland, Piedmont, San Leandro, San Lorenzo, Castro Valley, Hayward, Union City, Fremont, Newark, Milpitas, Niles, and portions of San Jose. Similar dangerous soil conditions and insufficiently resistant buildings are also on the southern, western and northern boundaries of San Francisco and San Pablo bays and would also be severely affected by a major earthquake on the Hayward fault. As that portion includes the so-called Silicon Valley, the potential economic disruption due to destruction of works in progress and the dismantling