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12 Sea level rise will mean floods affect more assets over time Sea level rise associated flooding will first affect marshlands and eventually threaten property and assets in southwest San Leandro, reaching the neighborhoods east of Wicks Boulevard in some areas. By mid- century, about 12 inches of sea level rise is projected to permanently inundate the marshlands, eroding the southern portion of the city’s defense to storm surge and high tides. Assets flooded under these conditions include a powerline that runs through marshlands and the coastal boundaries of the city’s shoreline parks. As water levels reach 24 inches, which is possible as soon as 2030 with a two-year extreme tide, the Union Pacific Railroad along the coast may experience flooding. At this level, water begins to encroach on the Oyster Bay Regional Shoreline, and creep up the Estudillo Channel and the edges of Marina Park, Marina Golf Course, and Tony Lema Golf Course. At 36 inches of sea level rise, water begins to flood into the neighborhoods between Wicks Boulevard and the railroad, and affects the Wicks Boulevard bridge where it crosses the Estudillo Channel. At this height, water levels reach the San Leandro Water Pollution Control Plant. These assets could be temporarily inundated by a five-year recurrence interval storm by mid-century and will potentially be permanently inundated by the end of the century. Although the Port of Oakland plans to raise levees in the area, which will increase protections along the southern border of the Water Pollution Control Plant and decrease projected flooding, some of the plant will remain exposed to rising sea levels. The consequences of sea level rise escalate quickly once water levels reach 48 inches, likely by the end of the century when combined with average yearly storm surge. At this level of inundation, Alameda County Fire Department Station 11 is exposed, as is more of the San Leandro Water Pollution Control Plant. Other sewer assets are exposed as well, namely, Line D-1, Belvedere, Line F, Line H, and the San Leandro Effluent Pump Station on Davis Street. These assets support sewer function and their proper functioning is critical to protect public health throughout San Leandro. Dayton Elementary School, which serves as a national shelter system facility, and three industrial facilities with hazardous materials onsite, owned by Davis Street Smart, US Printing Ink Corporation, and the Coca Cola Bottling Plant of California respectively are also at risk. There is also an increase in exposed power line and rail assets that could negatively affect commerce and the availability of resources and electricity in the city. See Figure 8 (on following page) for a map of areas inundated by 48 inches of sea level rise. 56