812 35TH ST 2018-04-16 - Laserfiche WebLink

March 14, 2016 Gully Bank Stability Evaluation. Wright Residence L&A Job No. 16-023 Page 2 r steep, westerly-declining slope. The residence site is bounded by 35th Street to the north and Sharon Crest to the west, and is adjoined by residential development to the south and east. The residence site generally slopes down gently southward towards the gully in the southern portion of the site, with its west side sloping down to the west. On approximately the northern one third of the site stand the house and a detached garage surrounded by landscaped areas; from there stepping down a short bank to about the middle third of the site is an open gently-sloped meadow area covered by lawn grass; further to the south in about the southern one third of the site lies a gully surrounded by dense mature tall trees. Geologic Setting and Soil Condition The Geologic Map of the Everett 7.5-Minute Quadrangle, Snohomish County, Washington, James P. Minard, published by U. S. Geological Survey in 1985, was referenced for geologic and soil conditions of the project site. According to this publication, shown on Plate 2 - Geologic Map, the surficial soil unit at and in the immediate vicinity of the project site is mapped as Advance Outwash (Qva) deposits. The geology of the Puget Sound Lowland has been modified by the advance and retreat of several glaciers in the past one million years or so and the subsequent deposits and erosions. The latest glacier advanced to the Puget Sound Lowland is referred to as the Vashon Stade of the Fraser Glaciation which had occurred during the later stages of the Pleistocene Epoch, and retreated from the region some 12,500 years ago. LIU & ASSOCIATES, INC.