Tri-State Drilling Technologies, Inc. is an Environmental/Geotechnical drilling company, founded in 1992, with a staff that consists of licensed drillers, hydrogeologists/ geologists and professional engineers, along with other experienced professionals, to provide our clients with technical expertise in the following areas:

  • Environmental Drilling for RI/FS
  • Monitoring Well Installation
  • Geotechnical Borings
  • Marine/Sediment Borings
  • Portable Drilling (low clearance)
  • Percolation Tests
  • Test Pit/Strip Excavation
  • Sanitary/Drywell Test Borings
  • Tank Removal/Remediation
  • Asphalt/Concrete Coring
 T.S.D.T., Inc. personnel have successfully completed projects with Federal, State, and City agencies, as well as engineering, architectural, and environmental engineering firms on numerous environmental and geotechnical field investigations.

T.S.D.T. maintains a wide variety of field, health and safety equipment, including Truck-Mounted Drill Rigs, a Trailered GeoProbe Unit, a Narrow (35") Track Mounted GeoProbe Unit for inside buildings, and a Float-Mounted Drill Rig.  Field personnel have been trained in the use of this equipment and have completed the OSHA required Hazardous Materials Workers’ Training Course.

The headquarters is located in Garden City, New York.  Telephone No.: (516) 294-6400,
Fax No. (516) 746-4432.

Geotechnical Borings 
at City Hall in New York City

Geotechnical Drilling and Testing
Various New York City and Long Island

Client: Various clients

T.S.D.T., working closely with engineers and architects, performed geotechnical boring and
testing at numerous proposed and existing





Phelps Dodge Sludge Management Site
Maspeth, Queens, New York

Client: NYC Department of Environmental Protection

T.S.D.T. provided environmental drilling services to characterize surface and subsurface contamination on the property that resulted from former copper processing activities and disposal practices.

Newark Bay Proposed Sludge Management Site
Maspeth, Queens, New York

Client: NYC Department of Environmental Protection

T.S.D.T. performed extensive subsurface testing of a 117-acre, mostly undeveloped site, for the New York City Bureau of Clean Water. Testing included groundwater monitoring wells, soil borings, and soil gas surveys.

Flushing Airport Development
Flushing, New York

Client: NYC Economic Development Corporation

T.S.D.T. performed environmental drilling at the former Flushing Airport. Much of this property was permanently flooded and not accessible with conventional drilling equipment. A portable drilling barge was used successfully to complete numerous soil borings at these locations.

Float-Mounted Drilling

American Ref-Fuel
Chester, Pennsylvania

Client: American Ref-Fuel of Delaware County

T.S.D.T. performed environmental and geotechnical drilling services at a large, vacant property located adjacent to an American Ref-Fuel facility and operation.


Trailer-Mounted GeoProbe


Geotechnical Drilling and Testing
Various Locations

Client: NYC Department of Parks and Recreation

In an annual contract, T.S.D.T. performed numerous soil borings, test pit excavations, percolation, and groundwater monitoring wells at various park properties in the Boroughs of New York City.


For further information, please contact us at:

Tri-State Drilling Technologies, Inc.
55 Hilton Avenue
Garden City, NY 11530
(516) 294-6400
FAX (516) 746-4432

Nicholas Recchia, C.P.G., President   
Paul Recchia, Vice President