Trevor is a Licensed Engineering Geologist with the Landslide Hazards Program at the Washington Geological Survey, where he studies landslides and helps communities under-stand and mitigate landslide hazards. He has worked for the WGS since 2006 in various positions and in the Forest Practices Division helping foresters understand landslides and evaluate timber harvest proposals.

Prior to working for the Survey, he worked for the Washington Department of Ecology, regulating well drilling and water well construction. Click here to see his bio:   https://www.dnr.wa.gov/publications/ger_bio_contreras_trevor.pdf

In April 2021, Trevor presented a somewhat different lecture, this one focusing on “Geology and the Art of Stone Carving.”  (Updated Oct. 2021)

In May 2013, Dr. Tabor, a leading scientist in the Northwest and author of the sentinel publication Geology of Olympic National Park, presented his personal experiences from years of mapping in the Olympic Mountains, a detailed outline of their geology, the development of geologic ideas about their formation, and briefly mentioned some new work by others. (Updated Oct. 2021)