7NT Engineering

7NT provides highly specialized, complex drilling, testing and inspection services. The following pages will demonstrate our experience and knowledge of this highly complex work with a sample of our project experience. 7NT is a nationally recognized Minority Business Enterprise (MBE) by the National Minority Supplier Development Council (NMSDC).

We pride ourselves on being a small firm that prevents and solves large, complex problems. 7NT personnel have been part of the Deep Rock Tunnel Connector (DRTC) mega-project since its preliminary design phase in 2007. The DRTC is part of Citizen Energy Group's (CEG) federally mandated plan to curb the overflow of raw sewage into local bodies of water.

7NT personnel provided drilling services on this key project for Metropolitan Sewer District of Greater Cincinnati. The project consisted of a 9,600 foot long, 30 foot diameter sewer tunnel. The scope of drilling work consisted of 18 total borings, which included 14 deep borings to approximately 400 feet in depth and 4 shallow borings to top of rock.

7NT personnel worked on the Advanced Facilities Plan Phase of the Fall Creek/White River Tunnel Storage Project (FCWRTS). For this project, 7NT personnel performed the drilling work for the Phase 2 Design that included drilling along the tunnel alignment in addition to shaft, drop structure, and pump station locations.

7NT labs offer a wide variety of physical and chemical analyses for soil, rock, and other construction materials. Our lab works closely with our engineers to ensure we perform the most effective array of tests, that yield the most appropriate results for the job at hand. We always strive for the highest quality data and results by adhering to many widely accepted testing procedures, such as ASTM test methods.