Former Landfill Becomes OSU-Cascades Campus

Client: Oregon State University-Cascades

Location: Bend, OR

Pumice Mine and Landfill Area from Aerial View

About the Project

Over the next 30 years, Oregon State University’s Bend, Oregon branch (OSU-Cascades) will create a 128-acre campus accommodating 5,000 students through the innovative reuse of a former pumice mine and former demolition landfill. The approach to remediating the landfill aligns with this goal through reusing excavated and cleaned material from the landfill to then grade and fill the pumice mine to the desired level, eliminating the need to import any backfill material which would take nearly 30,000 truck trips. OSU-Cascades intends to expand slowly but thoughtfully—at the rate of about one building every two years—in order to minimize impact on the surrounding community.

Key Project Solutions

MFA developed a remediation phasing plan to align with the projected funding availability. The results of the initial site analysis were used to develop remediation costs for multiple redevelopment scenarios. Using an iterative design process, MFA refined the remedial alternatives in collaboration with the OSU team, incorporating feedback received at design charrettes, and prepared an opinion of probable costs for each scenario.

Based on the results of the engineering due diligence and remediation scenarios, MFA demonstrated that the existing landfill could be repurposed to benefit the community and improve the environmental quality of the encumbered site. This innovative approach to remediation aligns with OSU-Cascades’ goal to provide an important asset to the community in a sustainable and creative manner.

The first phase of campus expansion is now underway, with large-scale waste excavation and processing, site grading, and slope stabilization complete. Construction of the first building in the redeveloped pumice mine is ongoing.

OSU-Cascades Van




Construction Equipment Moving Soil


Our Thoughts

The OSU-C team has been tremendous to work with; their long-term vision, emphasis on quality and creativity, and service to students, faculty, and the community is unparalleled. This project exemplifies the benefits of brownfield redevelopment and will serve the community and state for decades to come.

⁠—Ted Wall, PE, Principal Engineer

Contact Us
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Stacy J. Frost, PE

Principal Engineer

(208) 644-7895

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