We offer a wide range of environmental consulting services to serve potential client needs.With over four decades combined experience, our staff specializes in instream flow studies, hydraulic habitat modeling, quantitative fish population studies, and the writing of NEPA/CEQA related environmental documents.Please refer to the “Services” tab for a complete detailed listing of our abilities.


Our Services

Thomas Gast & Associates Environmental Consultants is a California-certified small business (SB# 1796367), dedicated to provide the most cost-effective, innovative, and science-based results for the most challenging natural resource dilemmas. We provide innovative solutions for complex environmental issues.

Let us be your problem-solvers!


TGAEC acquires an Electrofishing Boat

TGAEC acquired  an electrofishing boat from the University of Idaho.  It is a Smith Root 18' and we had it at the factory in Vancouver, WA for recertification.  There was some deferred maintenance, but it is working good now.  Take a look at the photo below.