10111 9TH AVE W EMERALD COURT APARTMENTS Geotech Report 2022-10-20

E NELSON EOTECHNI .AL A ASSOCIATES, INC. GEOTECHNICAL ENGINEERS Lk GEOLOGISTS Main Office Engineering-Geology Branch 17311-135'1'Ave NE,A-500 5526 Industry Lane,#2 Woodinville,WA 98072 as Wenatchee,WA 98802 (425)486-1669°FAX(425)481-2510 (509)665-7696>FAX(509)665-7692 November 21,2014 William Scrupps 11231 South Lake Stevens Road Lake Stevens,WA 98258 Geotechnical Engineering Evaluation Emerald Court Apartment Building Everett,Washington NGA File No.910814 Dear Mr. Scrupps: We are pleased to submit the attached report titled "Geotechnical Engineering Evaluation — Emerald Court Apartment Building — Everett, Washington." This report summarizes our observations of the existing surface and subsurface conditions within the site and provides general recommendations for the proposed site development. Our services were completed in general accordance with our proposal which was signed by you on October 20,2014. The property is currently vacant and is vegetated with scattered patches of weeds. Two trailers are located within the southwestern corner of the property. We understand that the proposed development plans for the site consist of constructing a new 5-story apartment building with associated surface parking and underground utilities. Stormwater generated on the site is planned to be directed to a series of underground detention pipes along the southern property line. We explored the site with six mini-trackhoe-excavated test pits. Our explorations indicated that the site is generally underlain by medium dense to very dense glacial till soils with a thin layer of topsoil throughout the site. We have concluded that the site is generally compatible with the planned development. Foundations should be advanced through any loose soils down to the competent glacial material interpreted to underlie the site, for bearing capacity and settlement considerations. These soils should generally be encountered approximately six inches to two feet below the existing ground surface, based on our explorations. In the attached report, we have also included recommendations for site grading, erosion control, foundation support,structural fill,and drainage.