East Bay Municipal Utility District (EBMUD) supplies water to 800,000 East Bay customers who live west of the Berkeley Hills. Prior to the adoption and implementation of a $200 million seismic improvement project all of the water for these customers went through one vulnerable tunnel that crosses the Hayward Fault near the Caldecott Tunnel. As part of this project, that tunnel – the Claremont Tunnel – was seismically retrofitted. Additionally, EBMUD created a second route to bring water to these west-of-the-hills customers through the Southern Loop Bypass near Castro Valley. The Southern Loop was completed in 2002, while the seismic retrofitting of the Claremont tunnel was completed in February 2007. The Hetch Hetchy Aqueduct, which supplies 270 to 315 million gallons of water per day to the City of San Francisco and other Bay Area communities, directly crosses the Hayward Fault in Fremont. A 2002 report by the Bay Area Economic Forum suggests that a breakdown in the aqueduct due to an earthquake could cut off Hetch Hetchy water to the Bay Area for 60 days. In addition to depriving 85% of San Francisco residents of their drinking water, this would cut off supplies for firefighting and water-intensive industry, causing economic damage of $17.2–28.7 billion. Extensive reconstruction work at the Hayward Fault crossing includes a multi-sectioned tunnel structure to allow shear without collapse, this is to contain a section of water pipe with ball joints and a slip joint. Lake Temescal The fault continues north under the eastern margin of Lake Temescal and its dam, which is unlikely to fail since it has been completely reinforced by the extensive earth fill supporting the subsequently improved Highway 24. University of California, Berkeley Many of the structures at the UC Berkeley academic campus have been self-rated as having "poor" earthquake performance. Numerous chemical, radiological, and biohazardous materials are present (in relatively small quantities) on campus and on the associated Lawrence Berkeley National Laboratory, in the hills above the university. However, the University has undertaken an extensive retrofitting project over the past decade to systematically retrofit all academic buildings on Campus to withstand a significant earthquake. Memorial Stadium Further north the fault passes under the lengthwise midline of the football field of California Memorial Stadium at the University of California, Berkeley. Fault creep since 1923 offset the original walls at the north and south ends 13 inches (33 cm). Extensive upgrades over a