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Big Eddy-Knight#NEPAImpact_with_Soils
NEPA Resource Analysis Present, Potentially Affected  +
NEPA Resource Applicant Mitigation • Minimize the project ground disturbance
• Minimize the project ground disturbance footprint, particularly in sensitive areas (i.e., steep slopes and landslide areas). • Prepare and implement a Storm Water Pollution Prevention Plan (SWPPP) for construction activities to lessen soil erosion and improve water quality of stormwater runoff. • For the SWPPP, use management practices contained in the Storm Water Management Manual for Eastern Washington (e.g., use silt fences, straw bales, interceptor trenches, or other perimeter sediment management devices; place them prior to the onset of the rainy season and monitor and maintain them as necessary throughout construction). • Prepare a Fugitive Dust Control Plan to control dust. • Water or use palliatives on exposed soil surfaces in areas disturbed during construction. • Water, use palliatives, or cover construction materials if they are a source of blowing dust. • Gravel access road surfaces in areas of sustained wind and potential dust erosion. • Ensure construction vehicles travel at low speeds on access roads and at construction sites to minimize dust. • Limit the amount of time soils are left exposed. • Reseed disturbed areas (see mitigation measures in Vegetation). • Restore compacted soils (see mitigation measures in Section 3.1 Land Use). • Conduct additional site‐specific evaluations in areas of potential landslides to determine degree of recent activity, likelihood of activation or reactivation, potential setbacks, and site‐specific stability as appropriate. • Design roads to limit water accumulation and erosion; install appropriate access road drainage (ditches, water bars, cross drainage, or roadside berms) to control and disperse runoff. • Design transmission tower footings and roads for specific site conditions through detailed geologic hazard assessments, including review of geologic maps and aerial photography, surface condition assessments, and geological testing at representative sites. • Minimize construction on steep or unstable slopes, if possible. • Relocate towers or roads located within previously unidentified active slides, bedrock hollows, or other geologic hazard areas, where possible.
her geologic hazard areas, where possible.  +
NEPA Resources Geothermal/Soils +
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