8920 EVERGREEN WAY THE RESERVE 2025-07-25

Zipper Geo Associates, LLC Reserve at Everett Project No.1117.01 May 1,2013 building below the northwest parking area. In order to construct the vault, a cut with a maximum anticipated depth of about 15 feet below finished site grades will be required. SURFACE CONDITIONS The project site consists of an undeveloped 2.4 acre property located along the northwest side of Evergreen Way near the intersection of Evergreen Way with Holly Drive in Everett,Washington. The site is bordered to the northwest by developed multi-family residential property;to the southeast by Evergreen Way;to the northeast by an electrical substation and undeveloped land; and to the southwest by undeveloped property. Topographically, the ground surface at the site generally slopes downward from northwest to southeast. Total vertical relief from the northwest property corner to Evergreen Way is about 24 feet. The maximum slope gradient of the ground surface at the site is about 15 percent. Ground cover on the northwest three quarters of the property consists primarily of dense deciduous brush and occasional deciduous and coniferous trees. In local areas of the northwest portion of the property, there are occasional derelict concrete ruins including a concrete foundation, concrete pads and concrete stairs. Based on our review of historic aerial photographs, it appears that a structure may have occupied the northwest portion of the property prior to 1994. There are also indications of vagrant habitation including a tent and a few makeshift shelters. The southeast quarter of the property is generally covered with asphalt and concrete pavements. No areas of standing surface water or drainage features were observed on the property at the time our subsurface explorations were completed. The approximate location of the site is shown on the enclosed Vicinity Map,Figure 1.Existing Site features are shown on the Site and Exploration Plan,Figure 2. SUBSURFACE CONDITIONS Regional Geology We assessed the geologic setting of site and the surrounding vicinity by reviewing the following regional publications. • Geologic Map of the Everett 7.5 Minute Quadrangle. U.S.Geologic Survey, Map MF-1748,1985. The above-referenced geologic mapping indicates the site is underlain by Vashon Till(Glacial Till).Glacial Till consists of a very compact mixture of sand,silt, clay,gravel,cobbles and boulders. Upon excavation, Glacial Till has a stark resemblance to that of hardened concrete and is sometimes locally referred to as "hardpan". The compact nature of Glacial Till is the result of the unit being overlain by hundreds of meters of ice during the Vashon stade of the Fraser Glaciation some 15,000 years ago. Page 2