4800 DOGWOOD DR Geotech Report 2022-10-25

Subsurface Exploration, Geologic Hazards, View Ridge Community Church Addition and Geotechnical Engineering Report Everett, Washington Project and Site Conditions 2.0 PROJECT AND SITE DESCRIPTION The project site consists of an existing parcel (Parcel No. 00449500009300), with an approximate total area of about 0.54 acres, located at 4800 Dogwood Drive, in Everett, Washington. We understand that the proposed project involves the construction of a two-story addition on the west side of the existing church. The new addition would have a footprint of about 1,200 square feet and situated approximately 25 to 35 feet from the top of a steep slope area to the west. We also understand that the City of Everett is requiring a geotechnical study to provide recommendations for an appropriate steep slope buffer and setback per the Everett Municipal Code (EMC) Title 19 Chapter 37.080. The existing church building on the site is a two-story wood -framed structure about 3,400 square feet in size. The areas to the west and south of the church consist of lawn, a paved parking lot to the north, and Dogwood Drive is located along the east side of the property. Beyond the lawn area west of the church, a moderately vegetated steep slope descends to Dogwood -Elm Creek. Based on review of an existing topographic survey for the church property dated August 26, 2004, the slope ranges in height from 8 to 18 feet. The existing church is approximately 45 to 55 feet from the top of the steep slope. 3.0 SUBSURFACE EXPLORATION We completed a hollow -stem auger boring at the location shown on Figure 2. The boring was completed by advancing a 4%-inch inside -diameter, hollow -stem auger with a trailer -mounted drill rig. During the drilling process, samples were obtained at depths of 2.5 and 5 feet, and subsequently at 5-foot-depth intervals to a depth of 20 feet. The exploration boring was continuously observed and logged by a geotechnical engineer from our firm. The various types of soils, as well as the depths where characteristics of the soils changed, are indicated on the exploration log presented in Appendix A of this report. The exploration log is based on the field log, drilling action and review of the samples collected. Our exploration was approximately located by measuring from known site features shown on the drawing that was provided to us. Because of the nature of exploratory work, extrapolation of subsurface conditions outside of the field exploration point is necessary. Differing subsurface conditions may be present due to the random nature of natural sediment deposition, and the alteration of topography by past grading and filling. The nature and extent of any variations outside of the field exploration may not become fully evident until construction. If variations are observed at the time of construction, it may be necessary to re-evaluate specific recommendations in this report and make appropriate changes. August 29, 2016 ASSOCIATED EARTH SCIENCES, INC. SKL11d - KE160351A2 - Projects�20160351JKEJWP Page 2