Geotechnical Investigation <br />Capital Hill PUD <br />Eugene, Oregon <br />EXECUTIVE SUMMARY <br />The following report presents findings from our field investigation, analysis, and our recommendations for the proposed <br />development described below. Our work included site visits in April 2016, September 2016, followed by meetings <br />with the project design team. Two (2) figures are attached showing site layouts; Figure-1 and Figure-2. Figure-1 shows <br />an early site layout provided by Schirmer Satre Group in March 2016 which is titled Site Investigation Map and includes <br />our site investigation notes. Figure-2 shows an updated site layout that reflects our site reconnaissance observations <br />and recommendations to the project design team. Our findings are that the proposed development is feasible from a <br />geologic and geotechnical standpoint provided the recommendations within this report are incorporated into the design <br />and construction of the project. <br />1.0 INTRODUCTION <br />The subject site is located at the northern end of Capital Drive at latitude 44.03012° north and longitude 123.06034° <br />west. The site is approximately 14-acres in size and the proposed development consists of a subdivision with associated <br />public and private improvements. <br />This report presents the results and findings of Branch Engineering, Inc. (BEI) field observations, testing, and research <br />for the subject site. Our investigation included the evaluation of the subsurface soil conditions at selected locations on <br />the site to provide geotechnical recommendations for the design and construction of anticipated structures and site <br />improvements. <br />1.1 Project and Site Description <br />The site is located along the southern boundary of Hendricks Park on both the west and east sides of the ridge running <br />south from Hendricks Park which forms the eastern boundary of the Fairmount Neighborhood. The site is <br />approximately 14-acres in size and presently contains five separate tax lots. The site is bordered by residential <br />development to the west and south with Laurelwood Municipal Golf Course located within 0.5-miles to the west of the <br />site. Forested land along the eastern portions of the site drops steeply down to the Ribbon Trail and the Laurel Valley <br />Neighborhood. The site topography ranges from relatively flat and gentle slopes along the ridgeline portions of the site <br />to estimated slopes of 50 to 80 percent along the steeper eastern portions of the site. The ridgetop portion of the site <br />and immediate vicinity is currently partially developed with single family residences and is accessed by Capital Drive <br />at the southern end of the site near its intersection with Cresta De Ruta Street. Roadway access to the site is best <br />described as steep, narrow, and winding. <br />Our understanding of the proposed project is that improvements to the existing Capital Drive are planned including <br />widening the existing roadway and improving a partial gravel access road to form a loop. A total of thirty-four (34) <br />individual residential lots are proposed within the development, of which, approximately five (5) lots contain existing <br />residential structures. <br />Preliminary layouts provided to BEI in March 2016 included thirty-six individual lots and an additional access road <br />traversing the steep southeastern slopes on the property (see Figure-1) which has since been removed following site <br />reconnaissance and meetings with the project design team. Preservation areas, reduced number of lots, and removal of <br />the southern access road are shown on the September 2016 proposed layout (Figure-2). Three of the six lots previously <br />accessed from the additional roadway (March 2016) traversing the upper portions of the southeast slopes will be <br />accessed from shared driveways and preservation areas have been added to portions of the steep, difficult to access <br />terrain. <br />Branch Engineering, Inc. <br />