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SDAG and SCGS Joint Meeting
FIRST MONDAY, June 4, 2018

Location: Holiday Inn Express
35 Via Pico Plaza
San Clemente, California 92672

FROM INTERSTATE 5: Take the 5 North. Exit Avenida Pico (Exit 76). Get in the left lane to head west on Avenida Pico (back under the 5 freeway). Take your first left on Via Pico Plaza. Holiday Inn Express will be on your right.
FROM INTERSTATE 15: Take the 15 north. Take either 56, 78 or 76 west to 5 North. Follow instructions above from interstate 5. If taking the 74 freeway west then you will have to take the 5 South to exit Avenida Pico.
happy hour
6:00pm -
Social hour  

Menu: something edible.
6:45pm -

Cost: $35.00 for non-members, $30.00 for members, $15.00 for students. if pre-registered by the deadline, $5 extra if you did not make a reservation. Click the SDAG member checkbox on the reservation form if you are a member.

Reservations: Make your reservation online by clicking the button below no later than NOON, Wednesday, May 30. RESERVATIONS CANNOT BE ACCEPTED AFTER Monday at noon. Late reservations/cancellations are preferred over walk-ins or no-shows. Fees payable at the meeting or pre-pay with PayPal.
As a new payment option, there will be a phone credit card reader at the meeting.

Go to Reservation Page
If you are a current SDAG member and are not getting e-mail announcements,
make sure the SDAG secretary has your correct e-mail address.

7:30pm - 8:30

Speaker: Tom Bourque of GeoTek

"Landslide Mitigation of a Landfill and Environmental Impacts"

Abstract: The City of Port Angeles Landfill is located adjacent to Olympic National Park on the Strait of Juan de Fuca in Washington State. Three solid waste cells (west, middle, and east) located behind and within the 135-foot sea bluff had been closed for 20 years as new cells were constructed and operated behind (inland of) them. Bluff and seaward cell slope failures resulted in refuse discharging onto the beach, precipitating a 300-foot seawall to stabilize the west and middle cells in the mid-2000s. Subsequently changed wave dynamics off the sea wall eventually threatened the middle and east cells. Accelerated bluff erosion through block failures and wave erosion penetration into the east cell had reduced the seaward bluff wall thickness from the original 100 feet (back from the "edge" of the bluff) to as narrow as ten feet. Bluff erosion was also changing due to increasing storm intensity and higher high tide levels, commonly attributed to climate change observations. New cell configurations were developed based on slope stability, seismic loading, groundwater conveyance, projected bluff erosion patterns into the landfill site, and new landfill cover system approaches. The tallest mechanically reinforced earth wall ever built in Washington State was constructed, including being integrated into the new solid waste landfill cover system. Construction in 2014-15 occurred on the beach, within the bluff, and within the landfill site. In addition, endangered species were a significant issue. Stream and beach control and restoration were required due to several species including salmon and Taylor Blackback Butterflies. Three tribes participated in the project as well as the City of Port Angeles, Washington Department of Ecology, Army Corps of Engineers, US EPA, state resources agencies, and several community groups. This project was the largest solid waste relocation project ever undertaken in Washington State history.

Tom Bourque is a Principal and Environmental Engineering Practice Director at GeoTek with over 25 years of experience as a project engineer and manager on environmental and civil engineering projects. His experiences include Superfund, solid and hazardous waste landfills, contaminated community redevelopment, contaminated surface and groundwater collection and treatment systems, flood control, and environmental restoration. He was the Project Manager and Engineer-of-Record for the Port Angeles Landfill Cell Stabilization and Protection Project.

Upcoming SDAG meetings - 2018

June 4: Joint Meeting w/ SCGS - Landslide Mitigation of a Landfill and Environmental Impacts, by Tom Bourque

July : Student Presentations Part 2

August: Seismic Case Study by Alan Hull

Meetings are usually scheduled for the 3rd Wednesday evening of the month. Meeting information on this website is normally updated the second week of the month.

If you have any information, announcements, ads or suggestions for an upcoming newsletter, please submit it to Adam Avakian, (2018 SDAG Secretary). Any news regarding upcoming events that may be of interest to the Association or news of your business can be submitted. The submittal deadline for the next SDAG newsletter is the last Friday of the month.
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