Skip to content

Back to Grid View

Washington, D.C.

GTA provides geotechnical engineering services in Washington, D.C., combining subsurface evaluation, environmental due diligence, construction-phase testing, and natural resource considerations to support complex urban development.

 

4750 Wisconsin Avenue, NW
Washington, DC 20016
Phone: 202-621-82535

Office Contact

Scott J. Taylor, PE

Vice President

Geotechnical Engineering and COT Services

Services List

  • Site work – Structural Fill Testing, Subgrade Soil, Utility Backfill Operations, and soil stabilization
  • Retaining Wall Inspection, Testing and Certifications
  • Asphalt Inspections and evaluation of pavement damage
  • Demucking Inspections for soft soil conditions
  • Firestop and Fire Penetrations (firestopping inspection)
  • Foundations – Soil Bearing Capacity of Footings (foundation inspection)
  • Laboratory Services, including soil lab testing
  • Concrete Sampling, Slump Test (concrete inspection, compressive strength testing)
  • Threshold Inspections with certified special inspectors
  • Field-welded and Bolted Structures (structural steel inspection, bolting)

Connect with the Team

  • Phase I and II environmental site assessments (phase 1 environmental site assessment, phase 2 environmental site assessment)
  • Site-Specific Risk Assessments
  • Soil site investigation and subsurface exploration
  • Contaminated soil remediation and groundwater monitoring
  • Brownfield redevelopment
  • Consumptive Use Permits
  • Dewatering Permits
  • Spill, Prevention, Control, and Countermeasures (SPCC) Plans
  • Spill/Release Emergency/Interim Source Removal
  • Soils Management Plans
  • Underground Storage Tank (UST) Removal and Closure Sampling, including underground storage tank removal
  • Industrial Discharge Monitoring
  • Stormwater Pollution Prevention Plans (SWPPP) and stormwater monitoring & NPDES inspections
  • Environmental impact studies and support from experienced environmental consulting firms

Connect with the Team

  • Geotechnical Feasibility Studies as part of geotechnical site investigation
  • Subsurface exploration and soil investigation
  • Shallow and Deep Foundation Analysis and Design for apartment building, high rise building, and parking lot developments
  • Retaining Wall Design/Recommendations
  • Slope stability analysis and design
  • Ground Improvement Design/Recommendations, including soil stabilization
  • Dewatering Permits
  • Subsidence Mitigation and sinkhole remediation
  • Karst Geology Analysis
  • Groundwater Control Design for high water table conditions
  • Geotechnical Instrumentation and Monitoring
  • Geotechnical Laboratory Testing, including soil testing

Connect with the Team

  • Wetland delineation and wetland permitting
  • Wetland mitigation design and monitoring
  • Threatened and Endangered Species Surveys, Assessment, and Permitting, including endangered species and rare species surveys
  • Biological and Ecological Assessments / environmental impact studies
  • Tree Survey and Condition Assessments, including tree survey, tree inventory, and tree condition assessment (ISA Certified Arborist On Staff)
  • Wetland Restoration and Enhancement, including wetland mitigation and restoration and stream mitigation

Connect with the Team

Got Questions About Which Of Our Offices Is Best for You?

Do you have a project that you want to discuss with our expert team? Send us an inquiry and we will be happy to set up a conversation.