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Green technologies for reducing slope erosion.
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  • Abstract:
    As climate change alters precipitation patterns, departments of transportation will increasingly face the problem of slope failures, which already cost California millions of dollars in repair work annually. Caltrans hopes to prevent these failures by implementing the latest vegetative and soil-based solutions for reducing the volume of highway stormwater runoff on slopes and in water conveyance systems. Caltrans staff requested a Preliminary Investigation to identify innovative strategies for reducing the risk of roadside slope erosion. We reviewed recent research, national guidance and related efforts of other state DOTs, focusing on Low Impact Development technologies; emerging “green” solutions; and biotechnical guidance related to slope design, soil engineering, and vegetation selection and management.
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