September Meeting

Tuesday • September 17th 2019 • 6 – 9 PM

Old Market Pub & Brewery 6959 SW Multnomah Blvd, Portland, OR 97223

6 PM — Social Hour

6:45 PM — Dinner

7:30 PM — Presentation

Dinner pricing is as follows:

$25 – Private Industry • $20 – Public Agency • FREE for students

*There is a $2 surcharge for those who do not reserve by the deadline

Reservations can be made here: RSVP by 12 PM Monday, September 16th


Geology of the Bonneville Lock and Dam

Speaker: David Scofield, PE (USACE retired)

Bonneville Lock and Dam is a large run-of-the-river navigation improvements and hydropower project located 40 miles east of Portland, OR. The project was constructed by the US Army Corps of Engineers between 1934 and 1938 and subsequently modified with expansion of the first powerhouse in 1941, completion of a second powerhouse in 1981 and a larger replacement navigation lock in 1991. Smaller project modifications continues on Bonneville to the present day. This presentation focuses on the role and importance of geology in the design, construction and operation of the project.

Speaker Bio: David Scofield, PE 

Mr. Scofield has 43 years of professional work experience as a civil engineer, engineering geologist, and ground water hydrologist in the Pacific Northwest. He began is his career as geologist with Portland District Army Corps of Engineers in 1976. He left the Corps in 1989 to work in the private sector as an civil engineer, specializing in geotechnical engineering. In 2001, Mr. Scofield returned to the Corps, in their Portland Geotechnical Section, working on foundation studies for buildings, major rehabilitation studies, and forensics of landslides, settlement, sinkholes. Beginning in about 2008 he became involved in dam safety reevaluations of Corps of Engineers’ dams, working with teams conducting semi-Quantitative and Quantitative Risk Assessments. Mr. Scofield retired from federal service in April 2019, at which time he was presented with the de Fleury Medal (Bronze Order) for his 30 years of distinguished service with the US Army Corps of Engineers. Mr. Scofield earned a BS in Geology (1973) and BS in Civil Engineering (1982) from Portland State University, and a MS in Geology (1976) from Stanford University.


Message from the Chair

Hello Oregon AEG Chapter! Yet another year of meetings is upon us. I hope everyone had a fun-filled summer of family, friends, trips, and bbqs. To begin the 2019-2020 meeting season, I would like to thank the 2018-2019 Chapter Board and Volunteers. Without all of you the Chapter would not function. This year the Board loses Mark Swank (Aspect), who is stepping down after 5 years of service. Thanks for your hard work on the Board and offering us a great board meeting place. Good luck with Co-Chair efforts for the 2020 Annual Meeting. Which reminds me: I’m sure there is room for additional volunteers if any of you are interested in helping make the Portland Annual Meeting a success. The meeting is being held September 14-19, 2020 with the motto Hazards in Hindsight, Lessons for the Future.

As Chair I look forward to working with Chris Humphrey (FERC) in the “wisdom donning” Past Chair position, Mike Marshall (GRI) as the “hand” Chair-Elect (who incidentally is also serving as Co-Chair of the 2020 Annual Meeting) and Nancy Calhoun (DOGAMI) as the “gate keeper” Treasurer. Our newest Board member is Aine Mines (Cornforth) who has been elected as Secretary. Aine received a Bachelor of Earth and Planetary Science from Washington University in St Louis and an MS in Civil and Environmental Engineering from UC Berkeley. She has been working as an engineering geologist, specializing in geotechnical investigations, geologic reconnaissance, soil and rock slope stability, and the emerging field of geotechnical asset management.

Our organization is made by volunteers. During this next year, please say hello and thank the following individuals: Matt Randall (PBS), Website Editor; Erin Dunbar
(GeoSyntec), Field Trip Chair; Ruth Wilmoth (Columbia Geotechnical), Membership Chair; and Jennifer DiGiulio (US DOE), Legislature Chair. Once again, thank you volunteers for your time and service! Also, thank you to outgoing PSU Student Chapter President, Jessica Moore.

If you would like to get more involved, we have two opportunities available for additional volunteers. If you love what AEG brings to our community please consider being a Program Chair or Newsletter Editor. Both positions offer a fun way to interact with the Chapter Membership and Board.

Thanks for being a part of the community and see you at the meetings!

Ben George, P.E., R.G., C.E.G.
Oregon AEG Chapter Chair


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