11229 19TH AVE SE SILVER LAKE TOWNHOMES WHOLE SITE Geotech Report 2022-10-25

Geotechnical Report Proposed Development: 11229 - 19th Avenue SE, Everett, WA September 16, 2016 drawings, we understand that the proposed buildings will be 3-story wood frame structures with a combination of concrete slabs and joist floors. We anticipate that site grading for the proposed project will likely consist of cuts and fill on order of 3 to 4 feet. ' � j✓`o-xa � ' : V ` ii ;7';t ;" _.. Plate 1. Looking west at the existing house and accompanying shed Plate 2. Looking north at the other two existing sheds from the from the center of property center of property. The conclusions and recommendations in this report are based on our understanding of the proposed development, which is in turn based on the project information provided. If the above project description is incorrect, or the project information changes, we should be consulted to review the recommendations contained in this study and make modifications, if needed. In any case PanGEO should be retained to provide a review of the final design to confirm that our geotechnical recommendations have been correctly interpreted and adequately implemented in the construction documents. 3.0 SUBSURFACE EXPLORATIONS Four test borings (PG-1 through PG-4) were drilled at the site on August 17, 2016, using an EC 95 track-mounted drill rig owned and operated by Boretec 1, Inc. The borings were logged by a geologist from PanGEO and extended to maximum depths of about 11 to 21 feet below existing grade. The approximate boring locations were located in the field using GPS and by measuring from property corners and site features, and are shown on Figure 2, Site and Exploration Plan. The drill rig was equipped with 6-inch outside diameter hollow stem augers. Soil samples were obtained from the borings at 2V2-foot depth intervals in general accordance with ASTM D-1586, Standard Test Method for Penetration Test and Split Barrel Sampling of Soils, in which the 16-210 11229 19th Ave SE Rpt Page 2 PanGEO, Inc.