The Mark at Eugene January 6, 2026 <br />Geotechnical Investigation and Seismic Hazard Study 1 Project No.: 2251077 <br />Eugene, Oregon Landmark Construction, LLC <br />GEOTECHNICAL INVESTIGATION <br />AND SEISMIC HAZARD STUDY <br />THE MARK AT EUGENE <br />EUGENE, OREGON <br /> <br />BACKGROUND <br />A new residential building is planned at 1200 Alder Street in downtown Eugene. The <br />site encompasses a portion of the original Sacred Heart Hospital. The site location is <br />shown in Figure 1A (Appendix A). Several of the original buildings have been <br />demolished. The remaining buildings will be demolished to accommodate the <br />currently proposed development. <br />We understand the site is expected to be developed in two phases with individual <br />structures, the first phase will be located to the south and the second phase to the <br />north. The planned structures are expected to have 5-stories. The current <br />geotechnical work is limited to the first phase at the south portion of the parcel. An <br />existing parking structure at an adjacent lot will remain and be utilized for the <br />proposed improvements. <br />The project has included an accelerated design phase, and we understand that final <br />design plans have been prepared. Foundation Engineering, Inc. (FE) has provided <br />geotechnical design parameters for the new foundations as the work has progressed. <br />This report summarizes our understanding of the foundation design and <br />recommendations for design and construction of the new building foundations. We <br />understand that construction of the first phase is planned to begin the summer of <br />2026. <br />Landmark Properties, Inc. (Landmark) is the project owner and retained FE as the <br />geotechnical consultant. Our scope of work for the Phase 1 structure was outlined <br />in a revised proposal dated July 10, 2025, and authorized by a signed agreement. <br />FIELD EXPLORATION <br />Borings <br />We drilled four exploratory borings (BH-1 through BH-4) at the site between <br />September 29 and October 2, 2025, using CME-850 track-mounted drill rig and <br />mud-rotary techniques. The borings extended to depths ranging from ±26.5 to <br />81.5 feet below the existing ground surface. The approximate boring locations are <br />shown in Figure 2A. Figure 2A also includes the location of previous borings <br />completed by FE. The information from these borings was used to assist in the <br />development of the recommendations presented herein. <br />