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Geotechnical Engineering Evaluation <br />Cliff Drive Short Plat Development <br />Everett, Washington <br />NGA File No. 1021318 <br />February 2, 2018 <br />Summary — Page 2 <br />It is also our opinion that the soils that underlie the site and form the core of the site slopes should be <br />stable with respect to deep-seated earth movements, due to their inherent strength and slope geometry. <br />However, as with all slopes there is a potential for shallow sloughing failures during wet weather or as a <br />result of seismic events. Such events should not affect the planned residence provided the foundations are <br />designed with the recommended embedment values and the slope and drainage systems are maintained as <br />described in this report. In the attached report, we have also included recommendations for site grading, <br />foundation support, retaining walls and site drainage. <br />We recommend that Nelson Geotechnical Associates (NGA) be retained to review the geotechnical <br />aspects of the project plans prior to construction. We also recommend that NGA be retained to provide <br />monitoring and consultation services during construction to confirm that the conditions encountered are <br />consistent with those indicated by the explorations, to provide recommendations for design changes <br />should the conditions revealed during the work differ from those anticipated, and to evaluate whether or <br />not earthwork and foundation installation activities comply with contract plans and specifications. <br />It has been a pleasure to provide service to you on this project. Please contact us if you have any <br />questions regarding this report or require further information. <br />Sincerely, <br />NELSON GEOTECHNICAL ASSOCIATES, INC. <br />Khaled M. Shawish, PE <br />Principal Engineer <br />