200 W MARINE VIEW DR Geotech Report 2025-08-07

Geotechnical Report Baywood Industrial 200 West Marine View Drive Everett, Washington 1.0 PROJECT DESCRIPTION The project consists of developing 15.6 acres of land with a 265,000 square-foot industrial building with associated infrastructure improvements. We expect the building will be constructed using precast concrete tilt-up wall panels with interior isolated columns supporting the roof framing. The floor slab will be constructed at grade,with dock- high loading doors located on the north side of the building. Based on preliminary plans prepared by Blueline, dated September 12, 2019, the buildings finished floor slab will be constructed at elevation 20 feet. With existing site grades,this will require placement of about three-to three-and one-half feet of fill. We anticipate structural loading will be light with columns carrying 100 to 150 kips and continuous bearing walls carrying 4 to 6 kips per foot. Product loading on the floor slab is not expected to exceed 350 pounds per square foot. The recommendations contained in the following sections of this report are based on the above design features. We should review any changes in the geotechnical aspects of the design plans as they are developed to verify that our recommendations are valid for the proposed construction and to amend or modify our report, as necessary. 2.0 SCOPE OF WORK Our scope of work was completed in accordance with our authorized proposal with a revised date of July 26,2019. Accordingly, on September 9, 2019, five Cone Penetration Tests(CPTs)were advanced at the site to a depth of 80 feet. CPT work was performed by Insitu Engineering subcontracted to Terra Associates,Inc. Due to encountering obstructions only two of the CPT's were advanced to the 80-foot depth. CPT's 01 and 05 refused at a depth of 8 feet with refusal at a depth of 49 feet at CPT-04. Using the information obtained from our subsurface exploration along with soil and groundwater data from previous test pit and test boring explorations completed by others at the site, we performed analyses to develop geotechnical engineering recommendations for project design and construction. Specifically,this report addresses the following: • Soil and groundwater conditions. • Seismic • Site preparation and grading. • Foundations • Floor slabs. • Lateral earth pressures for wall design. • Subsurface drainage. • Utilities • Pavements