About Us

About TriAd EnvironmentalA privately-owned small business, TriAD Environmental Consultants, Inc., was founded in 1996 by three environmental professionals who have over 75 years cumulative consulting experience. Offering advanced technical assistance to industrial and governmental clients, TriAD’s vision is to provide responsive, high quality, cost-effective, and environmentally-sound solutions to each client. From our location in Nashville, we staff projects throughout the Southeast and as far away as California.

TriAD’s approach to serving clients begins with assigning the right people. Our team assesses the client’s needs, then chooses an appropriate project manager to work with the client for the duration of the project. Whether a private individual or a multi-national corporation, the client has full access to engineers, geologists, and regulatory specialists for assistance and advice on whatever problems and needs arise.


The founders and principals of TriAD form the core of our diverse experience.

Ms. Nancy Sullivan, P.E., is an expert in solid waste and storm water management. She has prepared numerous landfill permit applications and designs for municipal, commercial, and industrial facilities. She has also prepared solid waste management and recycling plans, Superfund remedial design documents, and is a certified professional in erosion and sediment control (CPESC).

Mr. Mark Hobbs, P.G., has performed many hydrogeologic investigations under a variety of regulatory frameworks. These investigations include groundwater monitoring and extraction wells, geophysical surveys, dye traces, and groundwater statistical analyses. He is also an acknowledged expert in heavy metals contamination and remediation.

Mr. Dwight Hinch is a regulatory expert who was employed by the Tennessee Division of Solid Waste Management for many years, where he was responsible for developing hazardous waste management regulations and policies and co-drafted the regulations governing solid waste processing and disposal. He assists clients in complying with federal and state solid and hazardous waste regulations.

TriAD Environmental Consultants
(615) 889-6888
207 Donelson Pike Ste 200
Nashville, TN 37214