GEI Consultants, Inc. Bid Document (11)

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information collected. This information was used to design the subsurface investigation program for the tunnels and shafts which consisted of over 10,000 feet of soil borings. Drilling and sampling methods included; continuous SPT, Shelby tubes, Pitcher Sampling, PMT, and sonic drilling. Electronic field forms were created to collect soil boring information, gas data, drilling quantities, and daily field reports and move this data in near real-time to a cloud-based enterprise database. Lab testing included; index testing, strength testing with ring shear, direct shear, and triaxial, permeability, consolidation, corrosivity, and soil abrasivity. Lab data was also stored in the cloud-based database. Data visualization tools were then built in multiple software systems to allow for statistical analyses to be performed to develop baseline contractual properties. Data was summarized in Geotechnical and Environmental Data Reports (GDR) and (EDR) and was used as the basis for developing the Geotechnical Baseline Report (GBR). Technical specifications were developed to define the scope of the design/build project. Fort McNair Seawall Repair Design, DSS Services, Inc., Washington, DC: Performed a subsurface investigation to assess the subsurface information in the area where a portion of the seawall along the Washington Channel was failing. The seawall ultimately failed and was removed from the area. GEI then performed the design of timber piles to support the replacement stacked stone block gravity retaining wall. Zahnisers Marina Improvements, Safe Harbor Marina, Solomon’s Island, MD: Managed our marine design team to perform a wind and wave study of the proposed marina modifications to determine dock pile layout and loading. Developed marina management recommendations for storm events. Performed lateral pile design for the dock piles based on the storm loading conditions. DC Clean Rivers Project Division D – JBAB Overflow and Diversion Structures, Washington, DC: Design reviewer for the design of a sheetpile wall system that served as the temporary support of excavation system for near surface structures surrounding the previously constructed JBAB Drop Shaft. These structures consisted of a diversion structure over the Potomac Outfall Sewer, and an overflow structure and an odor control chamber for the JBAB Drop Shaft. Supported the construction of the shoring system through responding to RFIs and developing field design changes. Oronoco Bay Remedial Design, City of Alexandria, VA: Managed this sediment dredging and capping project under direct contract with the City of Alexandria (City). Our team assessed existing sediment investigation information, collected new sediment samples, and provided an alternative dredging and capping approach of contaminated alluvial river sediments at an outfall structure in the Potomac River. Our revised design model assessing the contaminant transport allowed for a revised design which greatly simplified the dredging and capping while meeting the required remediation of the contaminants. Windmill Hill Living Shoreline, City of Alexandria, VA: Managed our role in assessing the geotechnical aspects of a living shoreline construction project. We designed a ground improvement system using wick drains and controlled filling to mitigate settlement and potential for mud waves during construction. We also performed settlement monitoring during construction to ensure that settlement was stabilized to allow for the newly planted shoreline vegetation to remain in the proper tidal range. Long Bridge Project, Alexandria, VA and Washington, DC: The Long Bridge Project will construct a new, two- track railroad bridge crossing the Potomac River next to the existing Long Bridge, creating a four-track corridor. A new bike-pedestrian bridge will also be constructed as part of the mitigation to the National Park Service (NPS) parkland and will span the Potomac River and George Washington Memorial Parkway, connecting Long Bridge Park directly to East and West Potomac Parks. Provided technical peer review on behalf of CSX for both the north and south packages of retaining wall and foundation design packages to ensure compliance with AASHTO and AREMA codes and the project technical requirements. GEI Consultants | City of Sunny Isles Beach | RFQ 26-07-01 102 Paul D. Landers, PE