2416 61ST ST SE 2022-03-04 - Laserfiche WebLink

associated 2-1t2 --°2—.K earth sciences October 26, 2021 Project No. 20210370E001 /a a Uet Mr.Jack Shannon C Dte 09 2 2416 61st Street SE l?'4, Everett, Washington 98203 Peril •, a �k Subject: Limited Subsurface Exploration and Geotechnical Asi'kerenit?' for Slab and Foundation Repair 2416 61st Street SE Everett,Washington Dear Mr. Shannon: Associated Earth Sciences, Inc. (AESI) is pleased to present this letter-report providing a summary of our limited subsurface exploration and geotechnical assessment concerning the interior floor slab and foundation distresses observed at 2416 61st Street SE in Everett, Washington. Our work has been completed in general accordance with our proposal, dated September 20, 2021, and in accordance with generally accepted geotechnical engineering practices. This letter-report was prepared for the exclusive use of Mr. Jack Shannon, and his authorized agents, for specific application to this project. No other warranty, express or implied, is made. PROJECT AND SITE DESCRIPTION The subject site is located at 2416 615t Street SE in Everett, Washington, as shown on Figure 1. The parcel is currently occupied by two residential structures—one structure to the north and one structure to the south. This project involves the structure to the south, which consists of a two-story, wood-framed duplex, that was reportedly built in the 1960s. We understand that a drain pipe leak has occurred beneath the floor-level concrete slab within the kitchen, near the southeast corner of the building, and that noticeable settlement and cracking has been observed within the slab, possibly due to saturation and erosion of the foundation soils. An additional concrete slab located in a bedroom that is adjacent to the kitchen has also experienced noticeable settlement toward one corner and is no longer level. We also understand that cracking and possible settlement of the exterior footings along the northeast and southeast corners of the building have been observed. The purpose of this study was to evaluate the subsurface conditions below the interior slabs and adjacent to the exterior footings, assess the extent of soft and/or saturated foundation soils, and summarize our findings and recommendations for remediation of the foundation soils, repair of the interior slabs, and settlement mitigation of the exterior footings. Details of our findings and recommendations for repair are provided below. Kirkland I Tacoma I Mount Vernon 425-827-7701 I www.aesgeo.com r///