Environmental Impact Statement - Sonoma Land Trust

California Department of Fish and Game
U.S. Fish and Wildlife Services
Section 3.10. Traffic and Transportation
(NWPCo.) is the operator. NWPCo. expects to operate six trains per day through
the site following a start-up period. No substantial changes to the frequency of
rail crossings would occur under the No Action Alternative.
Conclusion: No Impact.
Action Alternatives
Impact T-1: Change in LOS at Important Intersections and
Roadway Segments during the Construction Phase
Proposed Project
Restoration activities would increase the number of vehicle trips to the Project
site during the site preparation phase. As a worst-case, this would generate up to
approximately 163 on-Highway truck and personnel vehicle trips on local
roadways on a daily basis during the early phases of Project construction.
Because this Project traffic would be phased throughout the day in compliance
with a traffic control plan prepared for the Project (see Mitigation Measure TN-
MM-1 below) and would be temporary in nature, Project traffic would neither
substantially degrade the level of service at area intersections such that it would
exceed the County’s level of service standards of LOS D, nor increase the critical
movement delay by five (5) or more seconds at intersections operating at LOS E
or F. Project traffic would also neither substantially degrade the level of service
on roadway segments or freeway ramps such that it would exceed the County’s
level of service standard of LOS C, nor cause an increase of five percent (0.05)
or more in the existing volume-to-capacity ratio on local roadway segments
already operating at an unacceptable LOS. However, construction vehicles
entering or exiting the site could result in temporary lane closures or cause
temporary delays or stoppage of through traffic in the Project vicinity, which
could adversely affect local traffic circulation. Effects potentially could be
significant, particularly during peak hours.
To minimize these impacts, SLT shall require the construction contractor to
implement Mitigation Measure T-MM-1.
Mitigation Measure T-MM-1: Prepare and Implement a Traffic
Control Plan
SLT shall develop a traffic control plan to minimize the effects of construction
traffic on adjacent land uses. The traffic control plan will identify all route
restrictions, signage, striping, detours, flagging operations, and/or other devices
used during construction to guide motorists safely through the construction zone.
In addition, the plan would include provisions for coordinating with local
emergency service providers regarding construction times and locations of lane
closures. Implementation of the traffic control plan is expected to reduce the
Project’s impacts on level of service, traffic flow, and safety to less than
significant. SLT will be responsible for monitoring to ensure that the plan is
Sears Point Wetland and Watershed Restoration
Project Final Environmental Impact
Report/Environmental Impact Statement
3.10-12
April 2012
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