1921 W MUKILTEO BLVD 2018-01-02 MF Import

' Preliminary Geotechnical Engineering Evaluation 1919 MuHteo Boulevard Everett, Washington ' INTRODUCTION ' This report presents the results of our geotechnical engineering investigation and evaluation of the proposed Johnson residence in Everett, Washington. The project site is located at 1919 Mukilteo Boulevard, as shown on the Vicinity Map in Figure 1. The purpose of this study is to explore and characterize the site's surface and subsurface conditions and to provide geotechnical recommendations for ' site development. The site is situated on a gentle to steep north -facing slope overlooking Possession Sound. The site consists of two residential lots and is currently occupied by an existing residence and shed. The planned improvements will include the removal of the existing structures and the construction of a new one-story, 5,000-square-foot, single-family residence on the two -lot property. Specific plans for the project were not available at the time this report was prepared. For our use in preparing this report, we have been provided with an untitled, undated site plan showing the property lines and the existing structures. SCOPE The purpose of this study is to explore and characterize the site surface and subsurface conditions, and provide general recommendations for site development. Specifically, our scope of services includes the following: 1. Review existing soils and geologic maps of the area. 2. Explore the site subsurface soil and groundwater conditions with three geotechnical borings. The drill rig was subcontracted by NGA. 3. Map the existing conditions on the steep slope and prepare cross -sections. 4. Provide recommendations for site grading and earthwork, including structural fill. 5. Provide recommendations for foundation support and slabs -on -grade subgrade. G. Provide recommendations regarding structure setbacks from the top of the steep slope. 7. Provide recommendations for retaining walls. NELSON GEOTECHNICAL ASSOCIATES, INC.