The Uplands Retaining Walls, Prince George’s County, MD

  • Subsurface exploration, laboratory testing, geotechnical analysis, retaining wall design, and construction observation and testing services for the Uplands’ site at National Harbor.
  • Designed a two-tier and a three-tier gravity retaining wall. The lowest tier’s maximum height is 16 feet high. The middle tier has a maximum height of 10 feet. The upper tier has a maximum height of 6 feet high.

Highway 274 Force Main Replacement, York County, SC

  • Geotechnical engineering and natural resource services for the replacement and expansion of approximately 7.0 miles of force main.
  • GTA obtained authorization from the South Carolina Department of Health and Environmental Control to install the utility line beneath state navigable waters.

Yard 56, Baltimore City, MD

  • Geotechnical engineering, environmental consulting, and construction observation and testing services for the 20-acre, award-winning mixed-use redevelopment of the former PEMCO Industrial manufacturing plant to include retail, office, and residential facilities.
  • GTA worked to develop foundation and earthwork recommendations for structures supported in the native clayey soils, and an up to 40-foot-deep industrial landfill along the western portion of the property.
  • Named “Best in Real Estate” by Baltimore Business Journal.

CBDTP Infrastructure and Toll Collection System, Manhattan, NY

  • As part of an open-end contract awarded to TransCore by the Metro Transit Authority Bridges and Tunnel, GTA is providing geotechnical, environmental, and natural resource consulting, and construction observation and testing services associated with a new toll collection system and the infrastructure necessary to support the system.

Avalon 555 President, Baltimore City, MD

  • Geotechnical engineering, environmental consulting, and construction observation and testing services during construction of the foundation of the 23-story, 550,000-SF, 380-unit apartment building with ground level retail space, and seven-story parking garage.
  • Geotechnical services included design of the drilled pier deep foundation system for the structure. GTA oversaw the installation and performance of over 100 drilled piers ranging from 2.5 to 5-foot diameter, and 50 to 120 feet.

Plantation Lakes, Sussex County, DE

  • Geotechnical engineering, environmental consulting, wetland delineation, hydrogeologic services, and construction observation and testing services for the 664-acre, 2,510-unit Residential Planned Community (RPC), 18-hole Championship Golf Course, and 22,000-SF award-winning clubhouse

Ronald McDonald House, Baltimore City, MD

  • Environmental services, subsurface exploration, and installation of borehole inclinometers for the new six-story, 60,000-SF Ronald McDonald House structure in Historic Jonestown
  • Provided recommendations for construction of the two-story, below-grade garage which would be in close proximity to historic buildings, originally constructed in the 18th and 19th centuries
  • Construction observation and testing services
  • Named Best in Real Estate by Baltimore Business Journal. Received Award of Excellence by MBIA, LDC and NAIOP, MD Best Community Impact

1769 Jerome Avenue, Bronx Borough, NY

  • Geotechnical engineering, support of excavation (SOE) design, special inspection services including deep foundation load testing, and review of Site Safety Plans for the new 16-story, 144,000-SF mixed-use building with 175 affordable residential units, a footprint of approximately 15,000 SF, and partial cellar level 10 feet below the sidewalk level.
  • The building is supported by a combination of footings bearing on rock and 180-ton caisson piles socketed into the highly weathered rock.

2100 S. Tyron Street Office Building, Mecklenburg County, NC

  • Four-story, 80,000-SF office building in the vibrant South End District of Charlotte.
  • Geotechnical engineering, construction materials testing, and special inspections for the building and its surrounding site, including geo-pier foundation system design and installation monitoring.

The Highlands, Arlington County, VA

  • Part of the West Rosslyn Area Plan Study (WRAPS), a County-driven and community-involved redevelopment opportunity.
  • Geotechnical engineering, environmental consulting, and COT services for the 1,200,000-SF above grade complex with three high-rise towers containing upscale condominium and luxury apartment communities, and ground floor retail. The complex also includes four levels of below grade parking for approximately 1,050 cars.