Dover Behavioral Health Center Additions, Kent County, DE

  • Subsurface exploration, laboratory testing, geotechnical engineering, and COT services for Phase I and II expansions to the behavioral center.
  • Foundation recommendations, infiltration testing for use in design of SWM facility and Best Management Practice, and pavement evaluation and recommendations.
  • Provided special inspections in accordance with IBC during construction of the expansion project.

University of Delaware, Campus Utility Plant Supply Well, Newark, DE

  • Performed exploratory drilling to evaluate the potential for locating a new UDCUP water supply well.
  • Performed a 48-hour pumping test on the existing UDCUP well to evaluate the potential for increasing the permitted well withdrawal rates.
  • GTA coordinated efforts with the City of Newark Director of Public Works and DNREC.
  • GTA prepared a Water Allocation Permit Modification for increased withdrawal based on the results of our evaluation.

Big Chill Beach Club, Sussex County, DE

  • Public/private joint venture between DNREC and La Vida Hospitality Group.
  • 200-seat oceanfront restaurant and event facility located at Delaware Seashore State Park.
  • Geotechnical engineering; electronic Cone Penetration Test (CPT) soundings extending upwards to 100 feet deep; COT services including Class B timber and 12×12-inch concrete pile installation, vibration monitoring during pile installation, and site visits and reports for bank draws.

Dover Air Force Base, Air Traffic Control Tower Replacement, Dover, DE

  • Subsurface exploration and COT services for a new 9-level Air Traffic Control Tower.
  • Geotechnical investigation included a 120-foot-deep boring for evaluation of deep foundation options.
  • Special inspections during construction consisted of concrete testing, structural steel inspection, and evaluation of fire-proofing materials.
  • Structural steel observations during the demolition of the former Air Traffic Control Tower.

The Residences at Mid-Town Park, City of Wilmington, DE

  • Subsurface exploration, laboratory testing, geotechnical engineering, and COT services.
  • Shear wave tests and post construction dewatering recommendations for foundation and pavement design.
  • 417,000-SF, 3 levels of underground parking for 511-cars, requiring excavations of about 32 to 44 feet.
  • 5-story and a 7-story buildings connected by pedestrian bridge, retail, 198 apartment units, elevated courtyard, and resort-style swimming pool.

Natural Gas Pipeline Relocation, New Castle County, DE

  • Provided wetland delineation and permitting services for the 1.5-mile utility alignment project.
  • Coordinated with USACE, DNREC Wetlands and Subaqueous Lands Section and Natural Heritage and Endangered Species Program.
  • Obtained USACE authorization to use Nationwide Permit 12-Utility Line Activities.
  • Obtained State Subaqueous Lands authorization & coordinated with Delaware SHPO for issuance of a Cultural Resource Survey Concurrence letter.

I-495 Emergency Bridge Repairs, Wilmington, DE

  • Provided emergency response and corrective action services including subsurface exploration and geotechnical engineering services to repair BR1-183 on I-495 over Christina River.
  • Performed 12 CPT soundings with pore pressure dissipation tests.
  • Monitored pore pressure through monitoring wells, pressure transducers and vibrating wire piezometers for approximately 12 months.

Wilmington Country Club Water Impoundment Structure, Wilmington, DE

  • Provided geotechnical engineering for the 21-million-gallon water impoundment structure at Wilmington Country Club.
  • Services included subsurface exploration and well installation, groundwater monitoring, slope stability and seepage analysis, and earthwork recommendations during design and review of the earthwork and engineering consultation during construction.

Nanticoke Distressed Slope, Sussex County, DE

  • Retained to provide geotechnical engineering services for design and construction of slope stabilization measures for a 25-foot-high natural slope on the Nanticoke River.
  • Evaluation included subsurface explorations, laboratory testing and slope stability analyses to evaluate the landslide.
  • Assisted with development of plans for increasing the stability of the existing slope including drains to lower the water elevations, and plantings along the face and shoreline toe.

Natural Gas Pipeline Expansion, Kent County, DE

  • Provided natural resource evaluations and federal and state permitting services for this approximately 5.5-mile utility alignment project.
  • GTA coordinated with FERC, USACE, DNREC Wetlands and Subaqueous Lands Section, and DNREC Natural Heritage and Endangered Species Program, and the Delaware SHPO.
  • Observed the installation of well point systems used to dewatering the open cut sections during construction through water ways.