17 E MARINE VIEW DR 2019 Geotech Report 2025-10-01

INTRODUCTION This report presents the results of our geotechnical engineering services for the proposed soil remediation facility at the Delta site located at 17 East Marine View Drive in Everett, Washington. The property is bounded by the Snohomish River to the north, East Marine View Drive to the south industrial property to the east, and wetland/delta areas to the west. The site is shown relative to surrounding physical features on the Vicinity Map, Figure 1 and in the Site Plan, Figure 2. PROJECT DESCRIPTION We understand that the Delta site may be developed in two phases. Phase 1 will consist of a soil remediation facility and Phase 2 will consist of a redi-mix plant. This report and our conclusions are for Phase 1, Soil Remediation Facility. The soil remediation facility will include two 120-foot by 240-foot open-sided storage sheds up to 40 feet high containing soil materials and the soil remediation plant, a water storage vault,scale house,recycled asphalt product storage building,container storage,and parking area. Planned soil and asphalt stockpiles in the shed buildings will not exceed 25 feet in height.Although building column loads and foundation types were not available at the time of this report, we understand the structures will be lightly loaded and can be designed to tolerate differential settlement. Our understanding of the project is based on our conversations with Daniel LeBlond. Purpose and Scope of Services The purpose of our services is to evaluate soil and groundwater conditions as a basis for developing design criteria for the geotechnical aspects of the proposed remediation facility. Our evaluations were based on previous explorations that were performed at the site in order to develop geotechnical engineering recommendations for use in design of the project. Our services were provided in accordance with our Master Services Agreement (Agreement No. CDAO618NMO118B) under Purchase Order No. 7869-32, dated June 27, 2018. PREVIOUS STUDIES We reviewed a preliminary draft report for a previously planned project at the Delta site, which included eight geotechnical borings completed in the project vicinity and another geotechnical report for the former bleach plant building, which included two geotechnical borings completed in the eastern area of the proposed development site. These documents include the following: ■ "Preliminary Draft Report, Geotechnical Engineering Services, Proposed Shadow Development, Snohomish River Delta Site, Everett,Washington," prepared by GeoEngineers. Dated October 6,2008. ■ "Everett Delta Lateral Project, Additional Geotechnical Exploration in Support of the Regulating Station North of Marine View Drive, Everett, Washington"' prepared by Golder Associates, dated August 8, 2003. ■ "Report, Geotechnical Engineering Study, Beach Plant Settlements, Everett Kraft Mill, Everett, Washington," prepared by GeoEngineers,dated February 27, 1991. GWENGINEERS� August3,2018 Pagel He No.0643-015 00