Environmental Impact Statement - Sonoma Land Trust

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California Department of Fish and Game U.S. Fish and Wildlife Service Section 3.2. Surface-Water Hydrology, Tidal Hydraulics, and Sedimentation It is important to note that agricultural areas north of the SMART line and the SMART line would be better protected from flooding and associated erosion with the Project tidal wetlands and levee compared to baseline which would leave these areas far more vulnerable to future flooding and erosion. Conclusion: Less than Significant Full-Tidal Alternative The Full-Tidal Alternative would have the same potential ecological consequences of accelerated sea level rise as described above for the Proposed Project for the area south of the rail line. A number of features have been incorporated into Full-Tidal Alternative design that are intended to minimize the impact of sea-level rise on marsh restoration and its physical evolution, and the Full-Tidal Alternative provides for additional potential habitat on the levee slope north of the rail line levee, as well as along the levees east of Reclamation Road and south of Highway 37. Sea level rise could impact the tidal habitat north of the rail line, if there is insufficient sediment accretion and/or organic matter accretion to keep up with sea level rise. In that case, the area north of the rail line would become a muted tidal lagoon rather than tidal marsh. Although not the primary target habitat for this area, this would be an acceptable habitat outcome, and the impact is considered less than significant. Potential impacts due to coastal flooding on the SMART rail line and surrounding roads would also be similar to the Proposed Project. The rail line levee would be designed to address potential sea level rise through approximately 2050, and there would be direct protection for Reclamation Road and Highway 37. Potential impacts due to sea level rise associated with the Full-Tidal Alternative would therefore also be less than significant. Conclusion: Less than Significant Sears Point Wetland and Watershed Restoration Project Final Environmental Impact Report/Environmental Impact Statement 3.2-22 April 2012
Section 3.3 Water Quality Introduction This section discusses the water quality effects of the proposed alternatives, including the No Action Alternative, with emphasis on the effects of dredging, levee breaching, and the creation of tidal wetland. Included in this section are a description of the site specific water quality conditions and an overview of the federal and state policies and regulations that govern water quality mitigation requirements. Affected Environment Data Sources Information presented in this section is based on the following data sources: • Sears Point Wetlands and Watershed Restoration Project Sonoma County, California, Final Preliminary Plan (Wetlands and Water Resources 2007). • Existing Conditions Report, Sears Point Restoration Project Sonoma County, California (Wetlands and Water Resources 2005b). • Final Supplemental Environmental Impact Report/Environmental Impact Statement for the Bel Marin Keys Unit V Expansion of the Hamilton Wetland Restoration Project (Jones & Stokes 2003). Specific reference information is provided in the text. Regulatory Setting Federal Plans, Programs, and Policies The provisions of the federal Clean Water Act are summarized in Section 3.2, Surface-Water Hydrology, Tidal Hydraulics, and Sedimentation. Sears Point Wetland and Watershed Restoration Project Final Environmental Impact Report/Environmental Impact Statement 3.3-1 April 2012
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Sears Point Wetland and Watershed R
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Sears Point Wetland and Watershed R
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Contents List of Tables ...........
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California Department of Fish and G
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Executive Summary This summary prov
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Table ES-1. Summary of Impacts and
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Table ES-1. Continued Page 3 of 141
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Table 1-1. List of Local, State, an
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Table 2-2. Action Alternatives Cons
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Table 3.5-2. Special-Status Species
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Section 3.6 Land Use and Public Uti
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Section 3.7 Agricultural Resources
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Section 3.11 Air Quality Introducti
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Section 3.12 Noise Introduction Thi
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Section 3.14 Aesthetics Introductio
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Section 3.15 Environmental Justice
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Chapter 4 Consultation and Other Re
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Sonoma Land Trust Chapter 4. Consul
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Chapter 5 Public Involvement and Sc
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Sonoma Land Trust Chapter 7. Refere
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Environmental Impact Statement - Sonoma Land Trust

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