Gregg Drilling, LLC. (Gregg) offers a wide range of services for environmental, geotechnical and marine site investigation and remediation. Since our inception, Gregg has been widely recognized as a leader and innovator in drilling, sampling, and subsurface investigation, providing clients in industry and government with the highest quality services. Throughout this time we have pursued one simple goal: "To provide our clients with high-quality, innovative services performed in a timely and cost effective manner."