5010 DOVER ST Geotech Report 2025-07-31

EAUG 2 8 2022 4 CITY OF EVERETT Permit Services Inc.E O Group Northwest, Inc• Geoteehnical Engineers,Geologists &Environmental Specialists August 22m1 2022 G-5756 Mr. Ben Erickson Email: ben@teamsquarefoot.com Subject: Geotechnical Engineering Investigation Proposed Addition 5010 Dover Street Everett,Washington Dear Mr.Erickson: At your request, GEO Group Northwest, Inc., conducted a geotechnical engineering investigation of the above-subject location for a proposed 13-foot addition to your house in Everett,Washington. We understand that Phillips Creek and a geologically hazardous slope are mapped onsite well into the existing property, and that the proposed addition will extend into this critical area thus requiring an exemption to permit the project. The scope of our services included a review of the geologic maps of the area and providing a characterization of the subsurface soil and groundwater conditions encountered,preparation of boring logs(attached)and preparation of this geotechnical report. BACKGROUND INFORMATION We understand that an exemption is required to allow construction in the critical buffer because the addition must not extend into the buffer more than the existing footprint of the house,the deck in this case. The proposed structure is to be an additional 4 feet to the west and 11 feet to the south, into the critical area. In this case the buffer shall be 25 feet beyond the point where the slope becomes 25%or less. Then to maintain the integrity of the buffer a building setback requirement is applied from the edge of the buffer of 10 feet. This would prohibit development on this property which is why an exemption is required to permit the proposal. 13705 Bel-Red Road • Bellevue,Washington 98005 Phone 425/649-8757 • Fax 425/649-8758