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k ? <br /> EVERETT STATION PARK-AND-RIDE EXPANSION <br /> • Agreement with Perteet Inc. January 2018 <br /> • Collect and Review Available Geotechnical Data:HWA will review readily available and relevant <br /> information along the project site.This review will include online geotechnical databases,geologic maps, <br /> and HWA library. <br /> Geotechnical Explorations <br /> • Plan Field Exploration Program:HWA will plan and coordinate the geotechnical exploration program <br /> for the project.This will consist of conducting a series of geotechnical borings across the project site in <br /> support of pavement design,assessment of shallow groundwater conditions,retaining wall,and <br /> luminaire foundation design.Planning will include identification of the location of the geotechnical <br /> borings,development of traffic control plans,and coordination of required equipment. <br /> • Generate Geotechnical Exploration Figure:HWA will prepare a Geotechnical Exploration Figure <br /> associated with our proposed exploration program. This Figure will be submitted to the design team and <br /> Everett Transit for review and approval.The Figure will detail the type,location,and extent of proposed <br /> field explorations. The Figure will also be used for utility locating clearances and for permitting that may <br /> be necessary to access the exploration locations.We assume the Everett Transit or Perteet,in support of <br /> this project,will acquire and provide any required permits or right of entries at no cost to HWA. <br /> • Conduct Utility Locates for Geotechnical Borings:Prior to conducting our field explorations,HWA <br /> will mark the proposed exploration locations and arrange for utility locates using the Utility Notification <br /> Center. <br /> • Conduct Field Explorations(Geotechnical Borings):HWA will conduct a series of up to five(5) <br /> geotechnical borings across the project site to assess the subsurface soil and groundwater conditions. <br /> Each of these borings will be drilled to a depth of 20 to 30 feet below ground surface.Soil samples will be <br /> taken at 2.5 foot intervals for the full depth of the borings. <br /> o , -I 1. A ..• _ <br /> tCsts. <br /> • Generate Boring Logs and Assign Laboratory Testing:HWA will prepare summary boring logs and <br /> perform laboratory testing to evaluate relevant physical properties of the site soils.Laboratory testing <br /> would include moisture content,hydrometers,grain-size distribution,and Atterberg Limits. <br /> Geotechnical Design Services <br /> • Evaluate Field and Laboratory Data:Based on the borings and the laboratory test results of selected <br /> samples,HWA will generate estimates of the soil strength and other properties needed to evaluate the <br /> effects the subsurface conditions will have on the proposed improvements. <br /> • Pavement Design Analyses:HWA will evaluate the results of the geotechnical explorations and <br /> develop pavement design•recommendations for new asphalt pavement within the parking lot. <br /> • • Luminaire Design and Recommendation: HWA will evaluate the data derived from our field <br /> investigations and laboratory testing to complete geotechnical engineering analyses to provide standard <br /> luminaire foundation recommendations.HWA assumes that luminaire foundations will be designed <br /> based on WSDOT standard plans and procedures. <br /> • Retaining Wall Design: HWA will develop design recommendations for proposed structural earth walls <br /> required for the project. <br /> 16 <br /> File location:X:\Everett,City of\Promo Efforts\20170146-Everett Station P&R Expansion\Promo\Business Development\Scope\Everett Transit Parking <br /> Lot_Scope_2018-1-10.dooc 98 • <br />