8102 EVERGREEN WAY Geotech Report 2025-08-04

DevCo, Inc. ES-6516 April 1, 2019 Page 2 Project Description We understand the site will be redeveloped with 5 six-story multi-family structures and related infrastructure improvements. Site ingress and egress will likely be provided by Evergreen Way and 79th Place Southeast. Although unspecified at the time of this report, stormwater management plans will likely incorporate a detention vault. At the time of report submission, specific building load plans were not available for review; however, we understand the proposed multi-family structures will be six stories in height, constructed of one post-tensioned concrete deck level and five stories of wood framing above. On this basis, we anticipate column loading of about 300 to 400 kips and perimeter footing loads of around 5 to 7 kips per lineal foot(kif). Slab-on-grade loading is anticipated at about 150 pounds per square foot (psf). Grade cuts and/or fills of about 5 to 10 feet are anticipated to achieve finish grades, and grade cuts of 10 or more feet will likely be necessary to install a vault. Retaining walls and/or rockeries may be incorporated into final designs to accommodate grade transitions, where necessary. If the above design assumptions are incorrect or change, ESNW should be contacted to review the recommendations provided in this report. ESNW should review final designs to confirm that appropriate geotechnical recommendations have been incorporated into the plans. SITE CONDITIONS Surface The subject site is located north of the Evergreen Way and SR 526 intersection, in Everett, Washington. The approximate location of the subject site is depicted on Plate 1 (Vicinity Map). The site consists of one tax parcel (Snohomish County Parcel No. 280507-003-070-00) totaling about 10.68 acres. The site is bordered to the north by 79th Place Southeast, to the east by Evergreen Way, to the South by SR 526, and to the west by Beverly Lane. Topography descends to the northeast, with about 20 feet of elevation change across the property. Known as the Andersons Shopping Center, the property is currently occupied a multi-tenant retail structure, medical building, and stormwater pond. All other site areas are surfaced with asphalt drive lanes, parking areas, and associated planting strips. We understand the medical building and stormwater pond are to remain. Earth Solutions NW,LLC