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.

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.

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.

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

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

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.

Two new deep-water berths totaling over 1,500 linear feet of wharf face along the Delaware River and one 500-foot barge berth on Mantua Creek.
Quality control and observation and testing of site work, pile installation, reinforcing steel, cast-in-place concrete, post installed anchors, pre-cast concrete, and structural steel; laboratory testing; and engineering supervision and consultation.

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.

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.