We at TGG believe that a successful project occurs when the engineer serves as an effective member of the project design team and brings to that project the full technical, professional and administrative competence of the company. TGG believes that effective communication from conception to final design and then through construction is essential for a successful project.

Longstanding Client Base
As a testament to our personalized service philosophy, we boast a longstanding client base with many of our clients having been with us since TGG's inception.

Seasoned Management
TGG is owned by John P. Sullivan. John brings over 30 years of professional geotechnical and geoenvironmental experience and a commitment to provide the best service possible to our clients and the best possible work environment for our staff. The fact that most of our clients and our staff have been with us for many years is testimony to the success of that philosophy.

Professionalism and Attention to Detail
We pride ourselves in providing our clients with construction observation services during geotechnical and geoenvironmental aspects of project construction. The progress of construction is monitored so compliance with design requirements and specifications is achieved and necessary adjustments and recommendations are made when subsurface conditions change. We consider this service to be a continuation of the engineering design phase to compensate for the vagueness of nature in below ground construction.