909 51ST PL SW Geotech Report 2022-10-25

N Main Office 17311 — 1351h Ave NE, A-500 Woodinville, WA 98072 (425) 486-1669 - FAX (425) 481-2510 June 22, 2018 Ms. Victoria Garcia 909 — 51st Pl SW Everett, WA 98203 NELSON GEOTECHNICAL ASSOCIATES, INC. GEOTECHNICAL ENGINEERS & GEOLOGISTS Geotechnical Engineering Evaluation Garcia Property Addition 909 — 51" Place SW Everett, Washington NGA Job No. 104218 Dear Ms. Garcia: Engineering -Geology Branch 5526 industry Lane, #2 East Wenatchee, WA 98802 (509) 665-7696 • FAX (509) 665-7692 This report documents our explorations and provides our conclusions, opinions, and recommendations regarding the subsurface geotechnical evaluation of the proposed residential addition development project located at 909 — 51` Place SW in Everett, Washington, as shown on the Vicinity Map in Figure 1. Our services were completed in general accordance with the proposal signed by you on May 18, 2018. INTRODUCTION The site is currently occupied by an existing single-family residence within the southwestern portion of the property. The parcel is bordered to the northwest and south by existing residential development, and access within the property is located on the southwest corner from the 51' Place SW cul-de-sac. The ground surface within the proposed development area is relatively level to gently sloping; however, the top of a steep ravine slope associated with Pigeon Creek No. 2 occupies the vicinity of the western property line and extends into the adjacent, undeveloped property to the west. We understand that the proposed development consists of constructing a new bedroom addition and deck to the existing residence, approximately 400 square feet in area, within the level portion of the property. We have been requested by you to provide a geotechnical evaluation of the proposed site development, and to evaluate the stability of the steep slopes within the vicinity of the site to aid in permitting, although the site is not located within a geologically critical area as determined by the City of Everett.