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Page 15 of 59 <br />City of Everett Merrill & Ring Bridge Replacement <br />diagrams for both static and seismic loading conditions will be generated using the <br />procedures outlined in the WSDOT GDM. <br />3.5.9 Retaining Wall Design: HWA will provide design recommendations for retaining wall <br />structures proposed near the abutments. <br />3.5.10 Slope Stabilization Design: HWA will provide design recommendations for slope <br />stabilization systems along both the east and west slopes of the ravine. <br />3.5.11 Approach Pavement Design: HWA will provide pavement design recommendations for <br />the two bridge approaches. <br />3.5.12 Specification Development: HWA will assist the design team in the development of <br />geotechnical related specifications. HWA expects that this will include slope <br />stabilization, retaining wall, and foundation specification assistance. <br />3.5.13 CONSULTANT QA/QC: HWA will have all design calculations and recommendations <br />reviewed by a senior principal prior to distribution to the design team or the City of <br />Everett. <br />3.6 Draft Geotechnical Report <br />3.6.1 Prepare Draft Geotechnical Engineering Report: HWA will prepare a draft geotechnical <br />engineering report for the project. This report will contain the results of the geotechnical <br />engineering investigation, including description of surface and subsurface conditions; a <br />site plan showing exploration locations and other pertinent features; summary boring <br />logs; and laboratory test results. The report will provide geotechnical recommendations <br />for each of the proposed improvements. <br />3.7 Final Geotechnical Report <br />3.7.1 Prepare a Final Geotechnical Engineering Report: HWA will finalize the geotechnical <br />report once review comments from the design team and the City of Everett are received. <br />3.8 Geotechnical PS&E Coordination and Support <br />3.8.1 Miscellaneous Geotechnical Assistance: HWA will provide up to 40 hours of <br />miscellaneous geotechnical assistance during the PS&E process. <br />Assumptions: <br />x The geotechnical explorations proposed herein will not be used to assess site <br />environmental conditions. However, visual or olfactory observations regarding potential <br />contamination will be noted. Analysis, testing, storage, handling, and disposal of <br />potentially contaminated soil and ground water (either sampled or spoils from drilling) <br />are beyond this scope of services. If contaminated soils and/or ground water are <br />encountered, the material will be properly contained on-site for disposal as mutually <br />agreed upon without additional cost to HWA.