1502 WALL ST IMAGINE CHILDRENS MUSEUM Geotech Report 2022-10-25

t � Imagine Children's Museum Building Addition Revised Geotechnical Engineering Report Everett, Washington Project and Site Conditions I. PROJECT AND SITE CONDITIONS 1.0 INTRODUCTION This report presents the results of our 2007 subsurface exploration performed for the Trinity Lutheran College project which included two borings located within the proposed Imagine Children's Museum Building Addition footprint. Our geotechnical engineering recommendations are based on observations gained during completion of the 2007 subsurface exploration borings referenced in this report, and a site plan provided to us by the project architect dated March 4, 2019. The site location is shown on the "Vicinity Map", Figure 1. The approximate exploration locations applicable to this development are shown on the "Site and Exploration Plan," Figure 2. This report has been revised to reflect changes to recommended foundation bearing pressures required for proposed building loading conditions. 1.1 Purpose and Scope The purpose of this study was to review subsurface data to be utilized in the design and development of the current building addition project. Our study included a review of selected available geologic literature, reviewing data gathered during drilling of two exploration borings in 2007, and performing geologic studies to assess the type, thickness, distribution, and physical properties of the subsurface sediments and shallow groundwater. Engineering studies were completed to formulate recommendations regarding site grading, the type of suitable foundations, allowable foundation soil bearing pressures, anticipated settlements, floor support, and drainage. This report summarizes our 2007 fieldwork and offers development recommendations based on our present understanding of the project. 1.2 Authorization Our study was accomplished in general accordance with our scope of work letter dated March 11, 2019. We were authorized to proceed by means of a signed copy of our scope of work letter. This report has been prepared for the exclusive use of 2812 Architecture and their agents for specific application to this project. Within the limitations of scope, schedule, and budget, our services have been performed in accordance with generally accepted geotechnical engineering and engineering geology practices in effect in this area at the time our report was prepared. No other warranty, express or implied, is made. 2.0 PROJECT AND SITE DESCRIPTION This report was completed with an understanding of the project based on review of a current "Site Plan," Sheet A1.1, by 2812 Architecture, dated March 4, 2019. The site plan provides the basis for Figure 2, attached. March 28,2019;Revised April 16,2019 ASSOCIATED EARTH SCIENCES,IN /� SGB/Id-190104E001-3-Projects\20190104\KE\WP - Page