March Dinner Meeting – 2019

Mapping Grand Canyon Conference

AEG Holiday Social – 2018

Join us for our Holiday Social December 3, 2018 at McFate Brewing Company.

September Dinner Meeting – Joint Meeting with GI


Click HERE to RSVP and participate!


Hosted by:



Please direct questions to Ronita Williams (, Caitlyn Hall (, or Kimberly Martin (

February 2018 Dinner Meeting

January 2018 Dinner Meeting

Date: January 18, 2018

Speaker: Jeffrey R. Keaton, Amec Foster Wheeler (Wood)

Topic: Suggested Enhancements to the Geologic Model Complexity Rating System


The suggested Geologic Model Complexity Rating System, introduced in 2014, was developed considering the 1993 Oregon rockfall hazard rating sys-tem with four rating levels. Five of the nine Geologic Model Complexity Rating System components pertained to geologic complexity; four regional components (genetic, structural/deformation, alteration/dissolution, and weathering/erosion) and one site-scale component. The other Geologic Model Complexity Rating System components were: terrain features, information quality, geologist competency, and level of effort. A pairwise comparison of components for a landslide hazard study, using a multi-factor decision analysis procedure called Analytic Hierarchy Process (AHP), weighted geologist competency highest (20%), fol-lowed by genetic complexity and deformation (each 18%) and site-scale co-plexity and level of effort (each ~11%). The other four components had weights from 8% to 3%. The 1-9 scoring for AHP, with 1 indicating that components are equal and 9 indicating one is extremely more important, appeared to be useful for objective comparisons. The AHP matrix configuration lists components in the same order in rows and columns. Regional complexity is now being considered as a single four-element component that depends not only on the basic geology of the site area, but also on the purpose of the geologic evaluation. Thus, the suggested enhancements streamline the Geologic Model Complexity Rating System, reducing it from nine components to six, but also complicates it by considering basic geology and purpose of evaluation as fundamentally important to the geologic model. These enhancements bring the suggested Geologic Model Complexity Rating System into alignment with the Oregon rockfall hazard rating system, which included facility components (i.e., what is at risk) for which the hazard was being rated.

September Dinner Meeting – 2017

September Dinner Meeting – 2017

October Dinner Meeting – 2017

Speaker: Jahn’s Distinguised Lecturer – Scott Anderson


September Dinner Meeting – 2017

Speaker: Aaron Schlessinger

Topic: Pavement Enhancement with High Performance Geogrids