Environmental Impact Statement - Sonoma Land Trust

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California Department of Fish and Game U.S. Fish and Wildlife Services Section 3.10. Traffic and Transportation Environmental Consequences and Mitigation Measures This section analyzes impacts on transportation associated with construction and operation of each restoration alternative. Approach and Methods Implementation of the Project alternatives could result in impacts associated with construction, operation, and maintenance of the Project site. Construction-related impacts could result from trips made by construction equipment and workers to and from the Project site (see the Construction Assumptions section below). Operation and maintenance impacts may occur as a result of trips made to the site by caretakers, researchers, or visitors. Guided tours that presently occur onsite today would continue through the construction period, offering limited public access to the site. Additional visitation by the general public would be allowed after construction is completed. Public use of the area between Highway 37 and the railroad tracks would be restricted to the USFWS Refuge headquarters facility and the Bay Trail routes that are proposed around the perimeter and within the Project site. Public access to the tidal area would be limited to boat access. Trips associated with public use and operation and maintenance of the Project are expected to be minimal and are not expected to affect circulation patterns or capacity at nearby intersections or roadway alignments. Construction Assumptions Construction Phasing Construction timing and phasing for this Project will be dependent on many factors including: project funding, permits, weather, and various market factors. Therefore, estimating the timing and phasing for this Project is somewhat speculative. One of the more economical ways to complete a large earthwork project of this type would be to bid one large contract for all earthwork construction and also include related Project features such as the Bay Trail, building demolition, and the various small Project features. This type of contract would allow rapid construction of the large Project features and efficient use of crew and equipment on smaller Project features. This contracting approach would also reduce the costs and impacts of multiple mobilizations and demobilizations that would occur if Project construction was phased in multiple contracts. Sears Point Wetland and Watershed Restoration Project Final Environmental Impact Report/Environmental Impact Statement 3.10-7 April 2012 7
California Department of Fish and Game U.S. Fish and Wildlife Services Section 3.10. Traffic and Transportation Assuming one large contract to construct most or all Project features, the typical construction sequencing could include: Mobilization Mobilization would include delivering construction equipment, field offices, materials and supplies, construction surveying, fencing and signage and other related activities to prepare the site for actual construction. Typically most mobilization is completed prior to any construction. Major Earthwork Features The major earthwork features of this Project would typically include pilot channel excavation done synchronously with levee and berm construction. Various operations would be sequenced to provide the needed fill materials for the levees and berms in a timely and cost-efficient manner. Building Demolition Building demolition would typically occur relatively early in the construction sequence simply to get these features out of the way of construction. This demolition could be done by the prime contractor as needed when crews are available or it could be sub-contracted and completed in one continuous process. Smaller Project Features The numerous smaller Project features such as small habitat area excavation, fencing, pumps, and ditches would likely be completed on an as-needed basis or used as fill-in work to fully utilize the prime contractor’s available crew and equipment. The Bay Trail Since most of the Bay Trail segments for this Project are located on top of or near constructed earthwork features, the Bay Trail would need to be constructed last after all other major earthwork features are completed. An efficient way to construct the Bay trail would be to complete the basic grading as crews are available, and then complete final grading and paving in a continuous process over a short time span. Sears Point Wetland and Watershed Restoration Project Final Environmental Impact Report/Environmental Impact Statement 3.10-8 April 2012 7
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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 1-1. Continued Page 3 of 3 Ag
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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 3.3 Water Quality Introduct
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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 3.14 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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