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Geotechnical Engineering Report 1 May 25,2017 <br /> Central Everett CHC,Everett,Washington RGI Project No.2017-094 <br /> 1.0 Introduction <br /> This Geotechnical Engineering Report (GER) presents the results of the geotechnical <br /> engineering services provided for the proposed Central Everett CHC in Everett, <br /> Washington. The purpose of this GER is to review subsurface conditions and provide <br /> geotechnical recommendations for the addition of foundation support columns for <br /> remodeling and structural upgrade of the existing 3-story structure at the site. <br /> The recommendations in the following sections of this GER are based upon our current <br /> understanding of the proposed site development as outlined below. If actual features <br /> vary or changes are made, RGI should review them in order to modify our <br /> recommendations as required. In addition, RGI requests to review the final design <br /> drawings and specifications when available to verify that our project understanding is <br /> correct and that our recommendations have been properly interpreted and incorporated <br /> into the project design and construction. <br /> 2.0 Project Description <br /> The project site is located at 4201 Rucker Avenue in Everett, Washington. The <br /> approximate location of the site is shown on•Figure 1. <br /> The site is currently occupied by an existing three-story clinic building with associated <br /> parking. RGI understands that the building will be remodeled and "structurally upgraded <br /> with new walls. <br /> Our understanding of the project is based on the site plan prepared by Swenson Say Faget <br /> dated April 13, 2017. Based on our experience with similar construction, RGI anticipates <br /> that the proposed new building walls (if needed) will have bearing loads of 3 to 6 kips per <br /> linear foot, isolated column load up to 100 kips per column, and slab-on-grade floor <br /> loading of 250 pounds per square foot (psf). <br /> 3.0 Field Exploration <br /> On May 16, 2017, RGI observed the drilling of two test borings to a maximum depth of <br /> 31.5 feet bgs. The borings are located in the proposed remodeling area. The approximate <br /> exploration locations are shown on Figure 2. <br /> Field logs of each exploration were prepared by the geologist who observed the drilling. <br /> These logs included visual classifications of the materials encountered during excavation <br /> as well as our interpretation of the subsurface conditions between samples. <br /> I ►i <br /> RILEYGROIJP <br />