6307 36TH AVE W Geotech Report 2025-07-29

1 Preliminary Geotechnical Report Intermec Site 36th Avenue West Everett, Washington 1.0 PROJECT DESCRIPTION The proposed project is a commercial development. A preliminary site study provided to us indicates that the development will include six commercial buildings, along with associated parking, roadways, and utilities. A water quality pond is shown in the eastern portion of the site. The buildings are proposed to be terraced in pairs with building grades descending from west to east. Grading to establish building and roadway elevations would involve cuts approaching 30 feet in the west-southwestern site areas with fills of 10 to 20 feet in the north and eastern site areas. The development will be accessed from the Iwest off of 36th Avenue West. The commercial buildings are proposed to be 30,000 to 48,000 square-feet in size. We expect that the buildings will be typical tilt up precast concrete wall panel structures. Foundations would consist of continuous perimeter footings and isolated interior spread footings. Floors will likely be constructed at grade and at dock high elevation on the east side of the buildings. For structures of this nature,we expect load bearing walls will carry 2 to 5 kips per lineal foot and isolated spread footings will carry loads under 100 kips. The recommendations contained in the following sections of this report are based on our understanding of the above design features. If actual features vary or changes are made, we should review them in order to modify our I recommendations, as required. We should review final design drawings and specifications to verify that our recommendations have been properly interpreted and incorporated into project design. ' 2.0 SCOPE OF WORK Our work was completed in accordance with our proposal dated July 11, 2008. Accordingly,on July 24 and 25, 2008, we explored subsurface conditions at the site by observing the excavation of 14 test pits to depths of about 10 to 15 feet below existing surface grades using a track-mounted excavator. We revisited the site on July 29, 2008 to observe the drilling of 2 soil test borings to a maximum depth of 30.5 feet below existing site grades. Using the information obtained from our subsurface explorations and laboratory testing, we performed analyses to develop geotechnical recommendations for project design and construction. Specifically, this report addresses the following: • Soil and groundwater conditions ' • Geologic hazards • Site preparation and grading • Excavations • Foundations i