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P2009.000.164 BKF Engineers April 15, 2009 Levee Improvements Adjacent to the San Carlos Airport Latest Revision June 30, 2009 PROPOSAL FOR GEOTECHNICAL EXPLORATION SERVICES - PHASE 2 Page 2 laboratory testing, analyses, reporting and provide as-needed design assistance. Phase 1 of this project, covered under separate contract, included the exploration in support of this scope. The associated tasks under Phase 2 include the following: 1. The samples collected during Phase 1 will be reexamined in our laboratory to verify field classifications and will be tested for moisture content, dry unit weight, Plasticity Index, shear strength, consolidation, and other physical properties, as appropriate. 2. Based on the geological and geotechnical data gathered, we will prepare an exploration report documenting our services and addressing the following: . Discussion of the field operations and laboratory testing completed for this scope of services. . Physical properties of the typical soils encountered in the project area. . Assessment of geologicaVgeotechnical hazards at the subject site and in the general project area, as appropriate, including shallow groundwater, faulting, levee bank stability, expansive soils, liquefiable soils, and soft compressible soils. . Characterization of the extents of soft compressible materials in the upper portion of the profile along the levee. . Characterization of strength, stress history, and consolidation parameter profiles for compressible materials along the levee. . Seepage both through-levee and under-levee during design flood events. . Treatment of geotechnical constraints such as expansive soils, levee bank stability, compressible soils, shallow groundwater, and liquefiable soils, as necessary. . Conclusions and recommendations for levee raise alternatives, such as fill placement and flood walls. Design Assistance Meetings and Consultation As required, we will interface with the design team during preparation of project plans and specifications. We will provide review of the project plans to confIrm that our geotechnical recommendations were incorporated. As necessary, we will prepare conceptual sections showing potential options for levee raise. We will attend necessary project kickoff meetings and design meetings with you andlor the client, as requested by you. We will assist you where