Executive Summary and Full Report: Draft Environmental Impact Report/Supplemental Draft Environmental Impact Statement: BART and San Francisco Airport Extension
[Executive Summary]

 

Table S-8
Summary of Mitigation Measures*
Issue

Proposed Project

I-80 Least Cost Design Option

Alternative I
No Build

Alternative II
TSM

Alternative III
Base Case

Alternative IV
Airport Aerial East of Highway 101

Alternative V
Minimum Length Subway to Millbrae

Design Option V-A
Minimum Length Subway to Airport GTC

Design Option V-B
Minimum Length Subway to San Bruno.

Alternative VI
Millbrae Ave. via Airport International Terminal
  
Transit Ridership
  • None required
  • None required
  • None required
  • None required
  • None required
  • None required
  • None required
  • None required
  • None required
  • None required
  
Traffic   
  • Freeways
  • Consider improved transit service to BART stations.
  • Extension of sixth lane on southbound Highway 101.
  • Same as proposed project.**
  • None required.
  • None required.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Consider improved transit service to BART stations.
  
  • Local Intersections
  • Local intersection improvements.
  • Same as proposed project.
  • None required.
  • None required.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  
  • Parking
  • Additional parking at Tanforan and Chestnut Stations.
  • Residential permit parking program.
  • Barriers and security standards at shopping center parking structures.
  • Restrictions at BART parking structures.
  • Pricing surcharges and other mechanisms at BART extension stations.
  • Same as proposed project.
  • None required.
  • Additional parking at Daly City and Colma Stations.
  • Same as proposed project
    plus
  • Additional parking at Chestnut Station.
  • Same as proposed project excluding additional parking  at Tanforan Station.
  • Same as Alternative IV.
  • Same as Alternative IV including parking meters on commercial streets.
  • Same as Design Option V-A.
  • Residential permit parking program.
  • Restrictions at BART parking structures.
  
Land Use   
  • General Plan Consistency
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  
  • Displacement
  • Compliance with state and federal acquisition and relocation laws.
  • Implementation of the mitigation measures in Section 3.1, Transportation, related to traffic and spillover parking control; Section 3.3, Visual Quality, related to improving visual compatibility of the station parking structures; Section 3.9, Noise, related to reducing noise and vibration levels to satisfy BART design criteria; and Chapter  Section 4(f) Evaluation, related to minimizing impacts on parklands.
  • Same as proposed project.
  • None required.
  • None required.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  
  • Community Cohesion/Social Considerations (Not in Station Vicinity)
  • Same mitigations recommended for proposed project under Community Cohesion/Local Economic Activity in Station Vicinity.
  • Same as proposed project.
  • None required.
  • Noise abatement, landscaping to migrate impacts from right-of-way.
  • Same as proposed project.
  • Same as proposed project
    plus
  • Relocation of pumping station in Millbrae.
  • Compliance with state and federal acquisition and relocation laws and regulations.
    plus
  • Relocation to pumping station in Millbrae.
  • Same as Alternative V.
  • Same as Alternative V.
  • Same as Alternative V.
   
  • Low Cost Housing
  • Compliance with state and federal acquisition and relocation laws.
   
  
  • Regional Economic Activity
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  
Visual Quality   
  • Built Environment
  • Design of aerial structure support columns along right-of-way
  • Landscaping.
  • Same as proposed project.
  • None required.
  • Landscaping.
  • Same as proposed project.
  • Same as proposed project
    plus
  • BART station parking structure design.
  • BART station parking structure design.
  • Landscaping.
  • Same as Alternative V.
  • Same as Alternative V.
  • Same as Alternative V.
  
  • Scenic Resources and Significant Views
  • Replacement of mature trees.
  • Car storage area buffer.
  • Landscaping.
  • ALRS Design-Guidelines.
  • Soundwall vegetation.
  • Same as proposed project.
  • None required.
  • Same as proposed project excluding car storage area buffer.
  • Same as proposed project.
  • Same as Alternative II.
  • Same as Alternative II.
  • Same as Alternative II.
  • Same as Alternative II.
  • Same as Alternative II.
  
  • Sensitive Receptors
  • Landscaping.
  • Light and glare screening.
  • Same as proposed project.
  • None required.
  • None required.
  • Same as proposed project.
  • Same as proposed project.
  • Same as Alternative III.
  • Same as proposed project.
  • Same as proposed project.
  • Same as Alternative III.
  
  • Streetscape
  • Landscaping
  • None required.
  • None required.
  • None required.
  • Preservation and enhancement of streetscapes and station entryways.
  • Landscaping.
  • Same as Alternative III.
  • Same as Alternative III.
  • Same as Alternative III.
  • Same as Alternative III.
  • Same as proposed project.
  
Cultural Resources   
  • Direct Physical Disturbance
  • Memorandum of Agreement to specify the terms, conditions, and restrictions of the mitigation actions.
  • Archaeological testing and compliance with applicable procedures and regulations.
  • Adherence to design criteria for dewatering-related settlement of adjacent structures.
  • Ongoing monitoring of impacts.
  • Same as proposed project.
  • None required.
  • None required.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Diminution of Historic Setting
  • Landscaping
  • Reduction of groundborne vibration.
  • Same as proposed project.
  • None required.
  • None required.
  • Same as proposed project
    plus
  • Sound walls to reduce noise levels at cemeteries and a Memorandum of Agreement for American Legion Post.
  • Same as proposed project.
  • Same as proposed project
    plus
  • Memorandum of Agreement for downtown San Bruno properties and American Legion Post.
  • Same as Alternative V.
  • Same as Alternative V.
  • Same as proposed project.
  
Community Services
  • Local police fire service improvements.
  • Same as proposed project.
  • Local jurisdictions would be responsible for improvements.
  • None required.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  
Geology, Soils, and Seismicity
  • Adherence to BART design criteria i.e.:
  • Design structures and facilities for seismic impacts.
  • Design of deep foundations.
  • Development and implementation of tunnel design standards.
  • Same as proposed project.
  • None required
  • Seismic and settlement design criteria.
  • Design of deep foundations.
  • Same as proposed project excluding tunnel design.
  • Same as proposed project including development of seismic design data for SFIA.
  • Same as proposed project.
  • Same as Alternative IV.
  • Same as proposed project.
  • Same as Alternative IV.
  
Biological Resources
  • Creation of creekside habitats and/or wetlands of equal wildlife habitat values.
  • Avoidance of wetlands during construction and filling.
  • Project modification to protect SFGS travel routes and habitat.
  • Management and enhancement of existing aquatic habitats.
  • Habitation Restoration Plan for SFGS.
  • Relocation of drainage channels and other waterways.
  • Oil and water separators in storm water catch basins.
  • Same as proposed project.
  • Management and enhancement of SFGS habitats.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
Hydrology and Water Quality   
  • Flood Hazard
  • Elevation of facilities.
  • Minimal use of landfill.
  • Drainage system improvements.
  • Onsite stormwater storage.
  • Stormwater infiltration.
  • Same as proposed project
    plus
  • the construction of a ditch or culvert.
  • The City of South San Francisco would have to make flood and drainage control improvements.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  
  • Soil Erosion
  • Installation of stream bank protection.
  • Same as proposed project.
  • None required.
  • None required.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  
  • Water Quality
  • Oil and water separators in catch basins.
  • Same as proposed project.
  • None required.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  
  • Groundwater
  • Well replacement.
  • Use of grout sealant.
  • Containment of water during construction.
  • Same as proposed project.
  • None required.
  • No effect.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
Noise
  • Groundborne Noise and Vibration
  • Floating slab trackbed.
  • Resiliently supported ties or soft rail fasteners.
  • Relocation of impacted homes.
  • Off-site mitigation.
  • Same as proposed project.
  • None required.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  
  • Airborne Noise
  • Building enclosure and design.
  • Shielding of the wheel truing machine.
  • Sound barriers at access/egress doors.
  • Construction of sound wall(s).
  • Redesign of the turntable.
  • Concrete barrier.
  • Sound absorptive material for sound wall(s).
  • Same as the proposed project
    plus
  • A closed deck.
  • None required.
  • Same as proposed project.
  • Same as I-380 Least-Cost Design Option.
  • Same as I-380 Least-Cost Design Option
    plus
  • off-site migration.
  • Same as Alternative IV.
  • Same as Alternative IV excluding a concrete barrier.
  • Same as Alternative V-A.
  • Same as proposed project.
  
Air Quality
  • Regional Emissions
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  
  • Localized CO Impacts
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  
  • Conformity Assessment
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  
Public Health and Safety   
  
  • Exposure to Hazardous Materials
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  
  • Exposure to Electromagnetic Fields (EMF)
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  
Energy
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  
Construction   
  • Transportation
  • Coordination with local jurisdictions regarding roadway improvements, street closures, vehicle, cyclist, and pedestrian access, traffic control near elementary schools, track re-alignments, construction vehicle routes, and construction schedules.
  • Coordination with SamTrans, CalTrans, and CalTrain to minimize service impacts.
  • Coordination with local utilities to achieve utility line relocation.
  • Passenger notification of delays.
  • Possible traffic and pedestrian detour during construction.
  • Same as proposed project.
  • None required.
  • None required.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  
  • Land Use
  • Coordination with transit agencies to minimize impacts to commuter services.
  • Coordination with cities, communities, schools, and cemeteries to minimize impacts.
  • Replacement parking for Holy Cross Cemetery.
  • Maintenance of access to businesses.
  • Restoration or replacement of displaced parks and recreation.
  • Same as proposed project.
  • None required.
  • None required.
  • Same as proposed project.
  • Same as proposed project
    plus
  • Coordination with SFIA.
  • Same as proposed project.
  • Same as proposed project
    plus
  • Coordination with SFIA.
  • Same as proposed project.
  • Same as proposed project
    plus
  • Coordination with SFIA.
  
  • Visual Quality
  • Cemetery landscaping and alternate cemetery access.
  • Alternate laydown/mobilization sites.
  • Laydown area visual barrier.
  • Same as proposed project.
  • None required.
  • No feasible mitigation measures.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  
  • Cultural Resources
  • Landscaping/Re-vegetation.
  • Compliance with noise limits.
  • Implementation of dust control practices.
  • Avoidance of historic structures.
  • Compliance with the Section 106 process and an MOA as required.
  • Same as proposed project.
  • None required.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  
  • Community Services
  • Early coordination of construction plans with local jurisdictions.
  • Same as proposed project.
  • None required.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  
  • Utilities
  • Coordination with utility agencies or companies to schedule service disruption; provide temporary backup service.
  • Customer notification.
  • Same as proposed project.
  • None required.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  
  • Geology, Soils, and Seismicity
  • Dewatering and groundwater control of excavation and tunneling.
  • Implementation of a monitoring program.
  • Design for tunneling-induced settlement.
  • Proper selection of tunneling method.
  • Same as proposed project.
  • None required.
  • None required.
  • Dewatering and groundwater control of excavation and tunneling.
  • Implementation of a monitoring program.
  • Same as proposed project.
  • Same as Alternative III.
  • Same as proposed project.
  • Same as Alternative III.
  • Same as proposed project.
  
  • Biological Resources
  • Alterations to the project right-of-way and laydown areas to avoid or reduce wetland disturbance.
  • Restoration and recreation of disturbed wetlands.
  • Use of sediment and silt controls.
  • Use of slurry or sheet pile shoring walls.
  • Use of watering truck.
  • Implementation of erosion control measures.
  • Management and enhancement of existing aquatic habitats.
  • Habitat Restoration Plan for SFGS.
  • Construction scheduling.
  • Avoidance of wetlands and sensitive biotic resources.
  • Same as proposed project.
  • None required.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  
  • Hydrology and Water Quality
  • Adherence to NPDES construction permit conditions.
  • Use of sedimentation ponds or tanks.
  • Dry season construction.
  • Maintenance of unobstructed drainageways.
  • Same as proposed project.
  • None required.
  • Same as proposed project excluding sedimentation ponds
    plus
  • Erosion control plan.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  
  • Noise and Vibration
  • Adherence to noise and vibration limits.
  • Use of noise control measures within and outside of construction limits.
  • Use of proper construction equipment.
  • Same as proposed project.
  • None required.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  
  • Air Quality
  • Improve traffic flow through construction parking configuration, traffic control and management, and scheduling.
  • Equipment engine maintenance and best construction practices.
  • Same as proposed project.
  • None required.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  
  • Public Health and Safety
  • Hazardous Materials Contingency Plan.
  • Site sampling and remediation.
  • Same as proposed project.
  • None required.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  • Same as proposed project.
  
  • Energy
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  • None required.
  
Source: Ogden

*    Mitigation measures presented in this table are in some cases more general than the specific measures described in the detailed impact assessment for each issue in Chapter 3.
**  Same as proposed project is used to indicate alternatives for which the generalized mitigation measures are the same as for he proposed project.  The specific mitigation measures may in fact vary slightly from the proposed project, even where "same as the proposed
      project" is indicated.

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[Executive Summary]