Teal Dreher, PE

Project Engineer

Teal dreher


Phone: 360-394-7917

Email: tdreher@dofnw.com

About Teal

Teal is a registered environmental engineer who has been working in the environmental industry since 2010. Since joining DOF in 2012, she has provided engineering design, project management, and construction quality control and oversight for a variety of remediation projects where she worked directly with dredging, excavation, and capping contractors. She has experience preparing plans and specifications, as well as designing databases to provide daily summaries and statistics for remediation projects. She has also worked with clients to prepare stormwater documents, including DMRs and SWPPPs, and ensure regulatory compliance with Industrial NPDES permits.

Technical Specialties

  • Construction oversight and quality control

  • Sediment remediation

  • Stormwater

  • Environmental sampling


  • M.S. Civil Engineering, South Dakota School of Mines and Technology

  • B.S. Environmental Engineering, South Dakota School of Mines and Technology, magna cum laude


  • Registered Professional Engineer – WA (52244), OR (93987)

  • HAZWOPER Certification


  • Fuglevand, P.F.; Webb, R.S.; Dreher, T.D., Environmental dredging productivity for precision excavator dredges, Proceedings of the Western Dredging Association and Texas A&M University Center for Dredging Studies, Dredging Summit and Expo 2015, Houston, Texas, USA, June 22-25, 2015

  • Dreher, Teal M. et al., Effects of chlortetracycline amended feed on anaerobic sequencing batch reactor performance of swine manure digestion, Bioresource Technology, Volume 125, Pages 65-74, December 2012

Speaking Engagements

  • Speaker, “Duwamish Waterway Early Action Implementation: Lessons Learned, NEWT, and Adaptive Management from the Engineer in the Cab ”, Dredging 2015, October 20, 2015

  • Speaker, “Northwest Oil Drain Canal: Sediment Remediation Using Bypass and Excavation ”, Western Dredging Association - Pacific Chapter. Waikiki, HI, October 2018