Drilling, lab testing, geotechnical engineering, environmental consulting, & COT services for the 100-acre, 1.2 million-SF residential, retail, & commercial development, located at the site of a former sand & gravel mine reclaimed with fly ash.
Site issues encountered included: fly ash fill, loose fly ash, uncontrolled fill, a stump dump, a deep mined hole, a tall retaining wall on uncontrolled fill, an existing deep sewer with poor backfill, and a proposed deep sewer close to a building.
GTA provided geotechnical engineering and natural resource planning services in conjunction with the comprehensive master land use plan for large warehouse/distribution (up to 1,500,000 SF in size) and office uses at the 1,000-acre property with rail access and close proximity to I-95.
Also provided geotechnical explorations and recommendations, natural resources planning, environmental consulting, & COT services for several parcels at the business park.
Geotechnical engineering, environmental consulting, COT services for the 161-acre community with 820 single-family homes and townhome lots, 208 apartment units within six buildings, two clubhouses, & two swimming pools.
Named “Community of the Year,” by MBIA Land Development Council.
Received the “Excellence in Construction Award, New Project Over $10 Million,” from Baltimore Metro Chapter of the Associated Builders and Contractors, Inc.
Obstacles included adjacent parking garage w/ uncertain foundation conditions, adjacent below grade parking garage which could not receive additional lateral loading, existing fill and loose, wet soil conditions.
COT for this project fell under the stringent guidelines of Fairfax County’s Special Inspection Program.
Geotechnical engineering, environmental consulting, and COT services for the 270,000-SF, 17-story apartment building with a one-level, 40,000-SF below grade parking garage, and 18,000 SF of retail space on the first floor.
The foundations for the project include over 300 driven, environmental concentric closed-end steel pipe piles filled with concrete.