1001 N BROADWAY 2020 EVCC 2025-10-03

1.0 INTRODUCTION This report presents the results of our geotechnical engineering services for use in design of the proposed Everett Community College (EvCC) Learning Resource Center (LRC), located east of North Broadway Avenue in Everett, Washington. The proposed project site is shown relative to surrounding physical features in the Vicinity Map, Figure 1, and Site Plan, Figure 2. 1.1. Project Description The proposed LRC building is located at the College Plaza site and will be in the asphalt-paved parking lot located east of Broadway Avenue, southwest of the Washington State University Academic Center building, and north of the existing retail strip mall buildings. As currently envisioned, the LRC will consist of a three-story 70,000 square-foot building academic building and will accommodate Library collections, Writing Center, Tutoring Center, Media Services and el-earning. We understand that the LRC building will constructed at or near existing grades and will be supported on shallow foundations. The project will include underground utilities, new parking areas, and potential stormwater management areas. We understand that no below-grade structures are planned for the project. 1.2. Purpose and Scope: The purpose of our geotechnical services is to evaluate soil and groundwater conditions as a basis for developing geotechnical design criteria for `the LRC. Field explorations and laboratory testing were performed to identify and evaluate subsurface conditions at the site to develop engineering recommendations for use in design of the project. Our services were completed in general accordance with our proposal dated April 25, 2019.Written authorization to proceed was provided by the Department of Enterprise Services Division of Engineering & Architectural Services [Agreement No. 2019-037 D (4)] on May 14, 2019. Environmental field screening was completed during drilling. The results of the environmental screening will be issued in a separate report. 2.0 FIELD EXPLORATIONS AND LABORATORY TESTING 2.1.. Field E p: orations Subsurface conditions were evaluated through a field exploration program that consisted of drilling and sampling four hollow-stem auger borings drilled within the footprint of the proposed building. The borings were completed on June 7, 2019 using truck-mounted, continuous-flight, hollow-stem auger drilling equipment subcontracted to GeoEngineers. The approximate locations of the borings are shown on Figure 2. The borings, designated B-1-19 through B-4-19, were completed to depths ranging from 25.5 to 31.5 feet below the existing ground surface. Locations of the borings were determined in the field by tape measuring to existing site features such as the sidewalks, light poles, and the existing landscape islands. Elevations at the boring locations were estimated from the site survey provided by AHBL completed in 2014. The respective ground surface elevations are shown on the boring logs in Appendix A, Field Explorations. Appendix A includes logs of the borings (Figures A-2 through A-5) and details of the subsurface explorations performed. GeOENGtNEERs� Juiy2272019 Pagel 'rile No.533E-011-00