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Exhibit A <br /> Geotechnical Considerations <br /> Previously prepared Soil Geotechnical Reports (SGR)for the proposed structures prepared with the Phase I <br /> design will be utilized. An update to this report including additional soil borings and a SGR Technical <br /> Update Memo will be prepared. <br /> One Roadway Geotechnical Report {RGR) for the roadway improvements and reconstruction of Brush <br /> College Road over Faries Parkway, including boring logs and soil profiles for the ramps and Access road(s). <br /> The report will include recommendations for pavement support and Mast Arm/Signal Arm foundations. <br /> It is assumed that the City will obtain access from property owners for geotechnical work.A letter wi1l be <br /> drafted and provided on City letterhead. <br /> Drainage Memorandum <br /> For the main Brush College Corridor AECOM has asked WHKS to provide drainage design and plans. <br /> Since a Phase I drainage report was not cornpleted,the scope of work will include analyzing the existing or <br /> baseline conditions and providing a report. <br /> Interconnect Report <br /> After coordination with the ICC on whether the traffic signal along Faries Parkway will need to be <br /> interconnected to the CN Railroad flashing Lights and Gates system and an interconnect report will need to <br /> be prepared for the ICC. <br /> Task 00404 Phase II Design -Plans Special Provisiorxs and Estiniates (overview) <br /> Roadwav <br /> It is anticipated that there will on}y be one construction package prepared for this project with multiple <br /> construction stages.Initial review of the project during Phase I Update-VE CR ABC will determine if there <br /> are viable portions of the project that should be constructed in the initial stages of the construction <br /> sequencing.This will then be discussed with the City and IDOT. <br /> Structural Design <br /> The overpass structure will be designed in accordance with the latest AASHTO LRFD Bridge Design <br /> Speci�cations, the Illinois Department of Transportation (IDOT)Bridge Manual,and the Norfolk Southern <br /> Public Projects Manual. <br /> Overpass Design—Sunerstructure and substructure <br /> Perform design of all elements of superstructure and substructures,including deep foundation elements. <br /> From the current SGR,it is anticipated that steel H piles will be utilized for the deep foundations. <br /> Scope 9-21-18 A-4 <br />