3431 NASSAU ST 2018-01-02 MF Import

Addendwn to Geologic Investigation and Geotechnical Engineering Report Proposed Single Family Residence NE Comer 35 s St. and Nassau St., Everett. Na. For the preparation of this work we were provided the following information: 04-08-10 1) City of Everett: Determination of Incomplete Application - Supplemental Application for Steep Slope and Steep Slope Buffer Alteration dated July 13, 2004. 2) Area Home Planners: Site Plan — Proposed Residence at Nassau St. and 35 s St, Everett, Washington. 3) Area Home Planners: Plan Set — sheets l of 9 thru 9 of 9, Spence Residence at Nassau St and 35°i St, Everett, Washington dated July 7, 20C4. A Site Plan showing the location of the proposed residence, set backs, topography and development plans is attached at the end of this letter. This site plan was supplied to GES, Inc. by Mr. OJ Spence — the property owner. As part of the site reconnaissance necessary to provide the answers to the quAstions raced by the City of Everett in their .July 13, 2004 letter, four-(4) additional test pits were excavated on August 23, 2004 with a trackhoe operated by Excavation Northwest, Inc. The location of these new test pits are shown on the attached Site PI*:n. Based on our reconnaissance of the site and the additional test pit work, it appears that additional uncontrolled fill materials have been placed in the southcentral portion of the site since our original investigation in early 2000. This additional fill has slightly changed the topographic contours shown on the site plan. This fill has mostly leveled the site in the soutlicentral area and pushed the flat top of the fill northward, towards the north property line. A very steep slope over 20 ft. in height (->100%grade) drops down from the top of the fill in a northern direction onto natural, undisturbed soil located along the northeastern section of the property. The till slopes and the majority of the property is currently covered with blackberry vines and other types of weeds and grasses. The additional test pits were excavated in the vicinity of the foundation area of the proposed new residence. The test pits delineated depths to bearing soil and the composition of the fill materials within the foundation area. Test Pit Lots are attached at the end of this letter. Soil descriptions on the logs were developed following the Unified Soil Classification format. In general, a good correlation was found between the new test pit data and the existing data from the 2000 investigation. As well as revealing a couple of feet of new fill, the new test pits indicated several episodes of fill delineated by 2 GES, Inc. IJ I Iv