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INTRODUCTION <br /> This report presents the results of our geotechnical engineering investigation at your proposed <br /> 1,068 square foot addition project, in the Everett area of Snohomish County, Washington. The <br /> site is located 1343 Madrona Avenue, Everett, Washington, as shown on the Vicinity Map in <br /> Figure 1. <br /> You have requested that we complete this report to evaluate subsurface conditions and provide <br /> recommendations for site development. For our use in preparing this report, we have been <br /> provided with a preliminary lot layout of the site by Bergsagel Construction Inc. dated <br /> September 30, 2014. <br /> PROJECT DESCRIPTION <br /> The development will consist of a 1,068 square foot addition on the southwest end of the <br /> existing structure. A retaining wall is also planned as part of the project. Details of the retaining <br /> wall are not known at this time. <br /> SCOPE <br /> The purpose of this study is to explore and characterize the subsurface conditions and present <br /> recommendations for site development. Specifically, our scope of services as outlined in our <br /> Services Agreement, dated November 7, 2014, includes the following: <br /> 1. Review available geologic maps for the site. <br /> 2. Explore the subsurface soil and groundwater conditions in the area of the planned <br /> addition with a limited access drill rig. <br /> 3. Evaluate pertinent physical and engineering characteristics of the soils encountered in <br /> the borings. <br /> 4. Complete a slope stability analysis. <br /> 5. Prepare a geotechnical report containing the results of our subsurface explorations, <br /> and our conclusions and recommendations for geotechnical design elements of the <br /> project. <br /> SITE CONDITIONS <br /> Surface Conditions <br /> The L-shaped project site is about 0.46 acres in size and has maximum dimensions of <br /> approximately 314 feet in the east-west direction and 97 feet in the north-south direction. <br /> Access to the site is provided by Madrona Avenue to the south. The site is also bordered by <br /> existing residential acreage to the east and west, and railroad tracks and Puget Sound to the <br /> north. A layout of the site is shown on the Site Plan in Figure 2. <br /> The ground surface within the site is gently to steeply sloping down to the northwest. The <br /> slope is well vegetated with trees and bushes. There was a moderate amount of water running <br /> off the slope near the railroad tracks. One single-family residence currently sits within the site. <br /> The site is vegetated mostly with a grass lawn,with landscaped areas surrounding the existing <br /> residence. <br /> Robinson Noble, Inc <br />