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AEG Southern California Chapter
March 2020 Meeting


***Tuesday, March 10, 2020***

Speaker: Jeffrey R. Keaton, PhD, PE, PG
Principal Engineering Geologist
Wood Environment & Infrastructure Solutions, Inc.

Topic #1: "Enhanced Geologic Model Complexity
Rating System"

with co-author Rosalind Munro, CEG, Principal Engineering Geologist, Wood.

This system, fashioned after the Oregon rockfall hazard rating system, uses 1) regional geologic complexity, 2) site factors, and 3) field factors weighted with a pairwise comparison using a multifactor decision analysis procedure. The scoring scheme, inspired by the Geological Strength Index (GSI), combines pairs of factors for site components (geologic complexity and terrain) and field components (geologist competency and level-of-effort).

Topic #2: "Seismic Refraction Survey Across the San Andreas Fault from Inside Elizabeth Tunnel"
with John Diehl, PE, President, GeoVision.

The LADWP’s seismic enhancement project includes steel sets and HDPE pipes inside the Elizabeth Tunnel across the 480-foot-wide fault zone. Sketchy construction geology notes document some bad ground areas, but others were expected. A seismic refraction survey under challenging conditions revealed many low velocity zones where shotcrete overlays were planned.

Location: Steven's Steak House
5332 Stevens Pl.
Commerce, CA 90040

Date/Time: Tuesday, March 10, 2020
5:45pm - Social Hour
6:45pm - Dinner
7:30pm – AEG Business
7:45pm - Program

Cost: $40 AEG members
$45 Non-Members

Reservations: Topher Amador-French
AEG.SouthernCalifornia@gmail.com
(818) 636-9265

ATTENTION, ATTENTION, ATTENTION!!
ALL RESERVATIONS ARE REQUIRED BY 11.00am MONDAY, MARCH 9. WE MUST HAVE RESERVATIONS TO GIVE THE RESTAURANT AN ESTIMATE OF THE NUMBER OF DINNERS. IF THE ESTIMATE IS WRONG, THE SECTION WILL EITHER PAY FOR DINNERS NOT CONSUMED OR SOME MEMBERS WON’T EAT.

Speaker Biography
Jeffrey R. Keaton is an honorary member and past president of AEG. He was the Jahns lecturer in 2004 and received the Holdredge award in 2016. He has degrees in geological engineering, geotechnical engineering, and geology from University of Arizona, UCLA, and Texas A&M University, and is licensed as a civil engineer and as an engineering geologist. Keaton has been employed by consulting firms for over 45 years, and in Wood's Los Angeles office since 2005 where he is a principal.