4937 EVERGREEN WAY QFC FUELING STATION Geotech Report 2023-02-17

Geotechnical Engineering Report 1 January 7,2020 QFC 852 Fuel Station,Everett,Washington RGI Project No.2019-258A 1.0 Introduction This Geotechnical Engineering Report (GER) presents the results of the geotechnical engineering services provided for the proposed QFC 852 Fuel Station project in Everett, Washington. The purpose of this GER is to assess subsurface conditions and provide geotechnical recommendations for the construction of the QFC 852 Fuel Station. Our scope of services included field explorations, laboratory testing, engineering analyses, and preparation of this GER. The recommendations in the following sections of this GER are based upon our current understanding of the proposed site development as outlined below. If actual features vary or changes are made, RGI should review them in order to modify our recommendations as required. In addition, RGI requests to review the site grading plan, final design drawings and specifications when available to verify that our project understanding is correct and that our recommendations have been properly interpreted and incorporated into the project design and construction. 2.0 Project Description The project site is located at 4919 Evergreen Wayin Everett, Washington. The gg approximate location of the site is shown on Figure 1. The site is a paved parking lot. RGI understands a fuel station consisting of a canopy, pump stations, and related underground storage tank (UST) will be constructed at the site. Our understanding of the project is based on a Site Plan forwarded to us by The Kroger Co. RGI anticipates that the proposed canopy will be supported on a series of columns with a maximum load up to 50 kips. Slab-on-grade floor loading of 250 pounds per square foot (psf) are expected. Excavation up to 20 feet will be needed for installing of the UST. RGI also expects that minor site grading will be needed to reach the final grade. 3.0 Field Exploration and Laboratory Testing 3.1 FIELD EXPLORATION On December 18, 2019, RGI observed the drilling of three borings. The approximate exploration locations are shown on Figure 2. Field logs of each exploration were prepared by the geologist who continuously observed the drilling. These logs included visual classifications of the materials encountered during drilling as well as our interpretation of the subsurface conditions between samples. The boring logs included in Appendix A represent an interpretation of the field logs and include modifications based on laboratory observation and analysis of the samples. 111 1 MI II i- RILEYGROUP