Welcome to NexTerra Subterranean, Inc.
About Us
Certified Drilling Services
NexTerra Subterranean, Inc. is a leader among geotechnical drilling firms in the Mid-Atlantic region. Our drilling services staff bring over 30 years of knowledge and experience in all aspects of drilling and geotechnical services. We offer drilling services for all phases of geotechnical site investigations. We are a Pennsylvania based MBE/ DBE company with licensure in Delaware (DBE), Maryland (MBE,DBE), New York (DBE), New Jersey (DBE), Virginia, West Virginia and DC
Our expertise in drilling and geotechnical capabilities propels us ahead when comprehensive drilling services are needed. Because we forged strong alliances with top geotechnical engineering firms in the Northeastern United States, these invaluable business partnerships empower us to work as a cohesive team with engineers, geologists, inspectors and lab technicians to provide you with the most efficient, cost-effective approach to transform your ideas into tangible realities.
What We Do
Drilling services include:
- SPT Sampling
- Undisturbed Sampling (Shelby, Dennison, GUS, Pitcher)
- NQ/NX Rock Coring
- HQ Rock Coring
- Augering and Mud Rotary
- NW (3”) & HW (4”) Flush Joint Casing
- Masonry Drilling
- Pavement Cores
- Grouting
- Monitor Well & Piezometer Installation
- Inclinometer Installation
- Double Ring Infiltration & Bore Hole Infiltration Tests
- Field CBR’s
- Angle Borings
- Low Clearance Drilling
- Test Pit Services
- In Situ Test (Dynamic Cone Penetrometer, Shear Vane, Pressure Meter)
- Downhole Geophysical
- All crews are OSHA 40 hr. certified and hold numerous accreditations from various organizations that are available upon request.
Drilling Equipment include:
- Acker ADII – Truck-Mounted Rig
- Acker Soil-XLS Track Rig
- Acker Soil Scout – Track Rig
- Core Bore Electric Core Drill
- ChemGrout Portable Grouter
Satisfaction Guaranteed
S.R. 0081, Section 511, Susquehanna County, PennDOT District 4-0
Completed this phase of drilling as part of the Pathways Major Bridge P3 Initiative. This project included drilling cut slope and ITS and CCTV sign structure borings. Provided project administration of the drilling tasks.
S.R. 0080, Section 352, Susquehanna County, PennDOT District 4-0.
Completed this phase of drilling as part of the Pathways Major Bridge P3 Initiative. This project included drilling bridge, retaining walls and ITS structure borings. Provided project administration of the drilling tasks.
S.R. 0081, Section 316, Luzerne County, PennDOT District 4-0.
This project involves the reconstruction of Interstate 81 from Mile Marker 161.2 to 169 and included borings for roadway cuts, embankments, sound barriers pavement design and structure design. More than 17,000 feet of drilling was completed including borehole infiltration and borings drilled under a HASP. Provided project administration of the drilling tasks.
Open-End Drilling Contract – East 22, Various Locations, PA, Pennsylvania Turnpike Commission (PTC).
This project involves providing geotechnical drilling support for PTC design project along the Mainline from M.P. 247.3 through the Delaware River Bridge. To date, seventeen (17) work orders totaling more than $900,000 have been completed. The work orders completed have involved both day-time and night-time drilling, pavement cores and maintenance and protection of traffic. Providing project administration of the drilling tasks.
Open-End Drilling Contract – East 24N, Various Locations, PA, Pennsylvania Turnpike Commission (PTC).
This project involves providing geotechnical drilling support for PTC design project along the Mainline from M.P. 247.3 through the Delaware River Bridge. To date, six (6) work orders totaling more than $150,000 have been completed. The work orders completed have involved both day-time and night-time drilling, pavement cores and maintenance and protection of traffic. Providing project administration of the drilling tasks.
SEPTA KOP Rail Extension, Phase 2 Geotechnical Investigation, Upper Merion Township, PA.
This project included drilling more than 230 borings totaling nearly 11,000 feet. The average depth of the borings is approximately 85 feet but some were drilled more than 200 feet below the ground surface. Provided project administration of the drilling tasks.
Geotechnical and Drilling Open End, Various Locations, PennDOT District 9-0.
Test boring drilling has been completed for 12 work orders to date. Test borings were drilled for slide corrections and structure replacements. Providing project administration of the drilling tasks.
Amtrak – Line 11 Transmission Line, Dauphin and Lancaster Counties, PA, Amtrak.
The project consists of replacement of the transmission line from Conestoga to Royalton along an active Norfolk Southern railroad line. Nearly 250 borings totaling more than 11,000 feet of drilling were completed. Drilling included hi-rail borings drilled from the track. Provided project administration of the drilling tasks.
Hadley Place Development, Cumberland County, TSI, Inc. Drilling performed to support the investigation of property for private development. Project included twelve (12) borings totaling 120.3 feet for this project. Provided project administration of the drilling tasks.
Maplewood Development, Dauphin County, TSI, Inc. Drilling performed to support the investigation of property for private development. Project included thirteen (13) borings totaling 124.6 feet for this project. Provided project administration of the drilling tasks.