Environmental Impact Statement - Sonoma Land Trust

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California Department of Fish and Game U.S. Fish and Wildlife Service Section 3.4. Public Health and Safety Mosquito Breeding Habitats in the Project Area The project area currently contains many existing types of wetlands that support mosquito production. Two general classes of habitats, open water habitats and flooded habitats, provide suitable conditions for mosquito production. Open water habitats include wetlands, ditches, sloughs, and ponds that are permanently inundated. Flooded habitats include managed wetlands that only seasonally retain surface water. Mosquito larvae were found in low numbers in streams and ponds on the project site and in some vernal pools and backwater areas within the watershed during 2005 and 2006 aquatic dip-net sampling. The potential mosquito breeding habitats that exist in the project area are illustrated in Table 3.4-1. Table 3.4-1. Potential Mosquito Breeding Habitat in the Project Area Habitat Type Existing Alternative 2: Partial Tidal Alternative 3: Full Tidal Agricultural Lands 1,055.6 223.5 0 Farmed Seasonal Wetlands 94.9 0.1 0.1 Seasonally Saturated Grassland 116.8 116.8 75.4 Alkali Seasonal Wetland 0.4 0.4 0.4 Brackish Marsh 35.5 7.8 1.3 Seep 1.3 1.3 1.3 Vernal Pool 35.2 35.2 4.3 Willow Scrub 1.7 1.7 1.7 Wildflower Field 15.5 15.5 15.5 Non-native Annual Grassland 877.5 877.5 782.2 Total 2,234.4 1279.8 882.2 Public Safety The project site is currently used for agricultural activities, livestock grazing and upland game birding. Future members of the public that would use the project site include construction workers during project implementation, users of the Bay Trail segments that would traverse the project site, staff at the San Pablo Bay National Wildlife Refuge North Bay headquarters, visitors to the Refuge headquarters, volunteers associated with SLT or the Refuge, school groups participating in environmental education activities, and maintenance workers under post-restoration conditions. In the event of flooding or other emergency, the project area is under the jurisdiction of the Sonoma County Sheriff Department and Petaluma Fire Sears Point Wetland and Watershed Restoration Project Final Environmental Impact Report/Environmental Impact Statement 3.4-4 April 2012
California Department of Fish and Game U.S. Fish and Wildlife Service Section 3.4. Public Health and Safety Department. In addition, the U.S. Coast Guard provides search and rescue and emergency response by boat to areas not accessible by vehicle. By authority and responsibility, the Sheriff Department is the designated “scene manager” for any disaster related to major flood activity. Public protection plans are coordinated with other public agencies to plan for disasters. Emergency response is carried out using vehicles and boats, depending on the location’s accessibility, predicted response time, and availability of resources. By emergency vehicle, the project site can be accessed by land via the Bay Trail that runs parallel to the SMART rail line between the Napa-Sonoma Wildlife Area toBaylands Project and Tolay Creek, adjacent to Lower Tubbs Island. However, access south of the SMART rail line is impeded by a series of gates on privately owned land. Due to sedimentation, Tolay Creek is not navigable only by a boat of any size, and is therefore not accessible by water.small craft. The project site is also not navigable boat-accessible from the San Francisco Bay shoreline, which. At low tide, the water is less than one foot deep in all areas adjacent to the project area. The closest marina facilities are located along the Petaluma River. Environmental Consequences and Mitigation Measures Approach and Methods Changes in potential mosquito production for the restoration project were evaluated by comparing existing potential mosquito habitat with potential mosquito habitat post-restoration. Estimates of post-restoration mosquito habitat are based on predicted future habitat acreages derived from Section 3.5, “Biological Resources”. Potential for flooding hazardsmosquito production and prevention of effective emergency access to the site was evaluated under both construction and post-restoration conditions. Impact Mechanisms The project was identified as resulting in a significant impact on public health if it would: • Convert areas that do not currently provide breeding habitat for mosquitoes (e.g., dry grasslands and developed areas) into wetland habitats suitable for producing problem numbers of mosquitoes; or • Alter water management practices in a manner likely to support additional mosquito production. Sears Point Wetland and Watershed Restoration Project Final Environmental Impact Report/Environmental Impact Statement 3.4-5 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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Chapter 3 Affected Environment and
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Section 3.1 Geology, Soils, and Pal
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Section 3.2 Surface-Water Hydrology
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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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