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<br />certerra.com 4660 Main Street, Suite 100, Springfield, Oregon 97478 T: 541.393.6340
<br />1.0 PROJECT INFORMATION
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<br />1.1 Project Authorization
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<br />Certerra has completed a geotechnical site investigation report for the proposed subject project to be located at
<br />2725 Floral Hill Drive, Map 18-03-04-42, Tax Lot 2300, in Eugene, Lane County, Oregon (see Figure 1 below). Our
<br />geotechnical services were authorized by Ms. Nora Cronin, Director of Real Estate Development with DevNW, on
<br />March 9, 2026, by signing our Proposal No. 10-260131-P-R2, with a revised date of March 6, 2026.
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<br />1.2 Project and Site Description
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<br />Our current understanding of the subject project is based on an email from Nir Pearlson with Aligned Architecture
<br />with an attached conceptual site, received in our office on January 16, 2026.
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<br />• Topographic Site Plan, prepared by Aligned Architecture, entitled Site Plan, DEVNW Floral Hill CLT,
<br />Project Address Taxlot 18030442 -02300, Conceptual Design, 1/15/2026, Project #2344.
<br />• Architectural Site Plan, prepared by Aligned Architecture, entitled Site Plan, DEVNW Floral Hill CLT,
<br />drawing sheet A001, dated 3-2-26, stamped “Progress Drawings Not For Construction”.
<br />• Floral Hill Access Map, provided by Mr. Lonstron, indicating site borders with red lines and site access
<br />easement location from Riverview Street.
<br />• Phase 1 Environmental Site Assessment, prepared by Environmental Research & Assessment, LLC,
<br />entitled, Phase 1 Environmental Site Assessment, 2725 Floral Hill Drive, (approx. address), Eugene,
<br />Oregon, dated November 17, 2025. Provided by Luke Lonstron with DevNW.
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<br />Based on the Architectural Site Plan, provided to us on March 3, 2026, we understand DevNW is planning the
<br />construction of six (6) townhouses and 16 SUD’s on the subject property (see Figures 2 and 3 below). The
<br />Architectural Site Plan indicates new paved roads (one of which will be a public road), proposed point elevations
<br />of the roads and structures, and three (3) assumed locations for retaining walls are also planned as part of the
<br />development - west of townhouse #6, west of townhouses #3 and #4, and between townhouses #1 and #2 and
<br />Floral Hill Drive.
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<br />Based on the topographic site plan, the current site elevations range from approximately 532 to 610 feet above
<br />mean sea level, down-sloping to the east-southeast. On the date of our site investigation, March 20, 2026, the
<br />west edge of the development was bordered by Floral Hill Drive. The site was bordered to the north and south
<br />by developed residential properties, and to the east by an undeveloped parcel of land, and developed residential
<br />properties along the west side of Riverview Street. The site currently is generally down-sloping, west to east,
<br />from Floral Hill Drive. Based on the topographic site plan and our visual site observations, the west edge of the
<br />site along Floral Hill Drive ranged from about 612 feet at the northwest corner to 594 feet at the northeast corner
<br />(see Photo 1 below). Along Floral Hill Drive, the site slopes steeply down at about 30 degrees, and drops in
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