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Government

Expertise

Carolinas Geotechnical Group, PLLC provides innovative geotechnical and exploration services for federal, state, and local levels of government. Both of our companies, Carolinas Geotechnical Group, PLLC and GC2 Exploration, LLC are registered as small businesses in the U.S. federal government’s System for Award Management (SAM). We follow Defense Contracting Audit Agency (DCAA) compliance and the Financial Accounting and Reporting (FAR) rules and regulations.

Featured Projects

Fort Bragg, Ryder Golf Course, Dam & Spillway Repair

Fort Bragg
Cumberland County, NC

Fort Bragg, Ryder Golf Course, Dam/Spillway Repair

CG2 was requested to provide a limited geotechnical subsurface investigation for the Ryder Golf Course Spillway Repair project in Fort Bragg, North Carolina. The project site is located in the vicinity of the 5th hole of Ryder Golf Course on the Fort Bragg military base with an approximate address of 5625 Normandy Drive, Fort Bragg, North Carolina. Presently, an irrigation pond extends north and south within the fairways of Hole 4 and Hole 5 of the golf course. There is a damaged concrete spillway just south of the pond. CG2 completed the subsurface investigation in the vicinity of the existing failed spillway. The subsurface exploration included two SPT soil borings to depths of 50 feet below existing grades, five hand auger borings with DCP testing to depths ranging from approximately 5.2 to 6.5 feet below the existing ground surface, and one hand auger boring to a depth of 13 feet. CG2 provided the client with a report containing the results of our subsurface exploration, site characterization, earthwork guidelines, and geotechnical engineering recommendations regarding bearing capacity and seepage cutoff wall depth for the proposed spillway replacement. CG2 completed our geotechnical services in July 2020.

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Shaw Air Force Base, Hydraulic Capture & Point Source Removal

Sumter
Sumter County, SC

Shaw Air Force Base, Hydraulic Capture & Point Source Removal

This project area is located within the Shaw Air Force Base, in Sumter South Carolina. The project will construct a steel-framed single-story metal groundwater treatment plant (GWTP) and soil washing enclosure (SWE). The GWTP and SWE include storage tanks with loads up to approximately 630 kips and multiple equipment pads and containment enclosures throughout. Parking areas, drives, one detention pond, and associated infrastructure are proposed.

CG2 was requested to perform a geotechnical exploration and provide geotechnical engineering recommendations for the proposed construction. CG2 performed six standard penetration test soil borings and three electronic cone penetrometer test (CPT) soundings to assist in the evaluation of the subsurface conditions and provide soil parameters to assist in foundation design and settlement mitigation. Extensive laboratory testing was performed to assist in providing soil parameters to the client.

Our services were completed, and our final report was issued in December 2022. Our recommendations included allowable and ultimate bearing capacity, seismic site classification by CPT method, liquefaction concerns, slab-on-grade support, shallow foundation support, pavement design, construction considerations, and site preparation.

This complex project presented numerous challenges. CG2 management coordinated access and scheduling with our client and Shaw Air Force Base to complete the project on time and on budget. Field staff was required to be 40 Hour OSHA Hazardous Waste and Emergency Response certified due to potential contact with contaminated groundwater and soil and decontamination procedures were implemented prior to demobilization.

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Military Ocean Terminal Sunny Point, Governor's Creek Bridge Replacement

Southport
Brunswick County, NC

Military Ocean Terminal Sunny Point, Governor's Creek Bridge Replacement

CG2 was subcontracted to provide subsurface investigation services and foundation recommendations for the proposed bridge replacement on the MOTSU army base. The structure is located to the south of the base on Perimeter Road. Damage was sustained to the existing, approximately 780-foot long, timber structure during the Hurricane Florence event. The proposed replacement structure is a thirteen-span, prestressed concrete cored slab superstructure, supported on 16 and 20-inch prestressed concrete piles with steel pile tips.

CG2 performed a total of five soil test borings to depths up to 68 feet where Castle Hayne Formation limestone was encountered. Prior to gaining access to the site, CG2 employees and subcontractors successfully passed background screening performed by the Army. The foundations were designed for driving resistances upwards of 195 tons into limestone and battered to limit lateral loading and mitigate minimum tip concerns due to scour. Although this was not an NCDOT project, CG2 prepared a final structure investigation inventory and structure recommendations reports in general accordance with NCDOT and AASHTO LRFD guidelines.

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Client Testimonials

Adam Peter

Project Engineer

I have worked closely with Matt and Rob on a variety of transportation projects in North Carolina. They are knowledgeable, dependable and we consistently look for opportunities to team with CG2.
Chuck Boyle

Project Engineer

BOYLE has worked with CG2 for several years and I cannot say enough about the quality of their geotechnical drilling services. They are easy to work with, responsive, accurate, and very professional. I would recommend them to anyone looking for the Best!
Matthew J. Amick

Project Manager

In my nearly 20 years in the geotechnical industry, CG2 is by far the most productive and professional subsurface exploration company I have worked with. They will continue to be my go-to contractor for drilling and clearing services.
Jeremy Hamm

Project Engineer

CG2 has become a highly valued and trusted partner. Not only are their drill crews professional, efficient, and experienced, they are managed by top-notch Geoprofessionals who become true partners through scoping, planning, and execution of Geotechnical field testing activities. Having land-clearing and CPT services in-house only adds to the value they provide, reducing coordination and administrative efforts associated with having multiple sub-contractors on a project.
Allan Paul

Senior Project Engineer / Project Manager

CG2’s field crews worked respectfully, diligently, and safely on a busy University Campus in high-pedestrian traffic area. They understood the assignment and executed their work in an efficient manner. Their equipment was in good working order and they had the tools and supplies needed to complete each task requested of them. By maximizing their effort, they exceeded my schedule expectations. Afterward, they were able to pivot operations to assist us with another local project before demobilizing back the Charlotte area.
Dana Goodnight

Project Geologist

CG2 field operations are some of the most efficient for getting difficult projects completed in a timely fashion. Their drilling capabilities in challenging areas (such as mountain area geologic contexts) have proven to be extremely reliable and effective.
Erin Greene

Project Geologist

My experiences working with CG2 Exploration have been excellent. From the initial proposal to the resulting field work, I trust that any environmental drilling they complete will be done to the highest standard and efficiently, while leaving the site as close to the original condition as feasible. When challenging drilling conditions were encountered, they maintained effective communication and we were able to collaborate an effective solution. CG2 sets the bar for professionalism throughout their projects.
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