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Public °ewe,,, Hearing Draft <br />susceptible to flooding. Major points in the water delivery system, such as the Mokelumne <br />Aqueduct, could also be disrupted, which would prevent water from flowing into the <br />EBMUD. <br />Human Health Hazards <br />Human health hazards are bacteria, viruses, parasites, and other organisms that can cause <br />diseases and illness in people. Some of these diseases may only cause mild inconvenience, <br />but others are potentially life threatening. These diseases can be and often are carried by <br />animals such as mice and rats, ticks, and mosquitos. Warmer temperatures and high levels <br />of precipitation can lead to increased populations of disease -carrying animals, creating a <br />greater risk of disease and increased rates of infection. Other human health hazards <br />include poor air quality, such as ozone pollution and smoke from wildfires, which can affect <br />respiratory systems of those exposed for prolonged periods. <br />Populations most vulnerable to human health hazards are those who spend a <br />disproportionate amount of time outdoors (such as outdoor workers or persons <br />experiencing homelessness), those with fragile immune systems or existing illnesses (which <br />may include persons with chronic illnesses and seniors), and those who may live in <br />substandard housing or not have access to health insurance and medical care <br />(households in poverty, low-income households, undocumented persons). These persons <br />may be living in conditions that increase their chances of catching vector -borne illnesses <br />or they may lack the ability to fight off infections. Many populations may not have access <br />to air purification systems that can filter out harmful particulate matter 43 <br />Emergency medical response services are also highly vulnerable to human health hazards, <br />as they may not be able to provide adequate services if there is an influx of health -related <br />emergencies. <br />Landslide and Debris Flow <br />Landslides occur when a hillside becomes unstable, causing soil and rocks to slide <br />downslope. Landslides can include rock falls, deep failures of slopes, and shallow debris <br />flows. Landslides are most common on steep slopes and hillsides made of loose soil or other <br />material, where excavation and grading, drainage alterations, or changes in vegetation <br />have occurred. The vulnerability assessment looks at landslides that are caused by <br />precipitation, although earthquakes can also trigger landslides. Hillsides commonly absorb <br />water, which increases instability of the slope and may increase the risk of slope failure. <br />Steep slopes made up of loose or fractured material are more likely to slide. In some cases, <br />hillsides can become so saturated that slope failures result in a mudslide (a mixture of soil <br />and water moving downslope). Steeper slopes in the San Leandro Hills are in high landslide <br />susceptibility areas. <br />Page 54 San Leandro 2021 Climate Action Plan <br />