Our History

SQE was founded in 2013 in Austin, Texas by Susan T. Litherland, P.E. and Quintin McNulty, P.E.  Sam Enis, P.G. joined as a Principal Project Manager in 2015.  Together, they bring together nearly 75 years of diverse environmental experience to commercial/industrial, oil and gas, legal, and real estate markets. SQE is a woman-owned business.

Susan Litherland, P.E.

Susan received a B.S. in Chemical Engineering from the University of Texas and has over 35 years of environmental engineering experience.

Quintin McNulty, P.E.

Quintin received a B.S. in Civil Engineering from the University of Texas and has over 20 years of environmental engineering experience.

Sam Enis, P.G.

Sam received a B.S. in Geological Sciences from the University of Texas and brings over 12 years of environmental experience.

Professional Staff

Our staff includes a wide variety of professionals with backgrounds in chemical and civil engineering, geology, and environmental sciences.  We leverage professional staff with experience in engineering design, geology/hydrogeology, air quality, construction management and estimating, geographic information systems, computer aided design, data management, and risk assessment.

SQE is a Woman-Owned Business

SQE is registered as a Women Business Enterprise (WBE) with the City of Houston.  No. 14-12-12768

SQE is registered as a Historically Underutilized Business (HUB) with the State of Texas.  No. 483431

SQE is certified with the National Women's Business Enterprise Council.   No. WBE1600327

512-900-7731

PO Box 1991 | Austin, Texas 78767-1991

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