a) Slope greater than 10 percent,
b) Geologically recent (last 10,000 years) previous landslide activity,
c) Stream or wave activity undercutting or cutting into a bank, reducing the stability of the surrounding land,
d) The presence or potential for snow avalanches,
e) The presence of an alluvial fan (indicating vulnerability to the flow of debris or sediments),
f) The presence of impermeable solids (i.e., silt or clay) which are mixed with granular soils (i.e. sand and gravel)

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