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Dear DVGI Members and Friends,
DVGI invites you to ourOctober 2023 Dinner Meeting at Valley Forge Casino. The meeting will featurea presentation by James Gardner, P.E. of WSP USA, Inc. titled "Geotechnical Investigations and Monitoring of MSE Perimeter Berms for Landfill Containment".A presentation abstractand speaker bio are below.
Social hour will start at 5:30PM followed by dinner at 6:30PM with the presentation to follow.
Please note our vendor is requiring advance notice for headcount, therefore we request your registration by Tuesday October 10, 2023.
We anticipate 1 PDH will be awarded for attendance.
Please click on the link below to register.
Abstract
Two municipal solid waste landfills were designed and constructed in eastern Pennsylvania utilizing mechanically stabilized earth (MSE) as the entire landfill perimeter berm. These MSE berms vary in height from approximately 15 to 95 feet. Significant portions of the MSE berm and landfill footprint are underlain by low shear strength, compressible soils and fill materials.
The first site is a former sand and clay mine. A portion of the site contains an appreciable thickness of mine spoils, which were placed in an "unengineered" manner. Instrumented test fills were constructed over two areas of the mine spoil to evaluate both the amount and rate of strength gain of these materials under load due to consolidation. The second site is a former steel manufacturing facility. Portions of the site are underlain by a paleochannel containing approximately 1 to 4 feet of compressible organic silt. Other portions of the site were formerly used as open borrow pits. These borrow pits were backfilled in an uncontrolled manner using slag, debris, and other fill materials, and more recently in a controlled manner using submerged fill with granular materials resulting in variable density of the backfill. Instrumentation was used during construction and subsequent landfill operations to monitor for horizontal displacements of the MSE berm and to measure pore pressures of the foundation soils. Data collected indicate that movements of the MSE berm and pore pressures have been within anticipated ranges.
About the Speaker
Jim is a Lead Consultant at WSP USA Inc, formerly Golder Associates Inc. He holds a B.S. in civil engineering and an M.S. in geotechnical engineering from Drexel University. He has 15 years of professional experience in geotechnical engineering for waste containment including municipal waste landfills and environmental remediation and capping projects. His expertise is in slope stability, geosynthetic design, and geotechnical instrumentation and monitoring.
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