TERTIARY ENVIRONMENTAL, LLC, is a woman-owned environmental consulting small business offering the following services: - Third Party Reviews, Audits, Sampling and Observations - Geological Services - Litigation Support Litigation Support Why Choose Tertiary Environmental, LLC? Tertiary prides itself on integrity, reliability and knowledge. You can count on Tertiary to provide services on time and within budget! Tertiary is well versed in many aspects of environmental consulting and have the experience and knowledge that clients can rely on.