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741 Marine Drive , <br /> Bellingham,WA 98225 360 733_7318 <br /> 1-67"ACl 4Te5T Arlrliington, nue WA 61 x98223 888 251.5276 360 733.7418 <br /> October 11, 2011 <br /> Job No. 11-0493 <br /> Randy Howard l <br /> 7214 Larimer Road <br /> Everett, WA 98208 <br /> Re: Slope Evaluation <br /> 7214 Larimer Road <br /> Everett, Washington <br /> Dear Mr. Howard, <br /> As requested, GeoTest visited the subject site on October 5th, 2011 in order to provide a <br /> visual evaluation of slope stability, erosion hazard potential and methods for mitigating <br /> potential impacts of the site geology for the proposed driveway access and new parking <br /> areas. <br /> PROJECT DESCRIPTION <br /> It is our understanding that there are plans to construct an additional parking area south <br /> of the existing residence along with a new access drive from Larimer Road. The existing <br /> hillside would be excavated into and a series of terraced benches would be constructed <br /> to provide the required space. <br /> We understand that the City of Everett has requested that a limited slope evaluation be <br /> completed for the project due to the presence of a relatively steep slopes located within <br /> the vicinity of the project site. <br /> SITE CONDITIONS <br /> Geologic information for the project site was obtained from the U.S. Geological Survey <br /> (USGS) online map of Washington State. According to the USGS, the vicinity of the <br /> project site is mapped as Advanced Continental Glacial Outwash (Qga(t)) from the <br /> Fraser age. Advanced Continental Glacial Outwash is comprised of glaciofluvial sand <br /> and gravel and lacustrine clay, silt and sand deposited during the advanced of glaciers. <br /> The sandy units are fine grained with interlayered coarser sand, gravel and cobbles. <br /> Site soils appear consistent with the mapped geology. <br /> Upon arrival to the site, it was observed that a near vertical cut had been made into the <br /> hillside just south of the residence. The cut was approximately 9 feet in height at the <br /> highest point, tapering down to the north and south, and approximately 40 feet in length. <br /> The cut had been exposed for approximately 1 week's time and appeared stable. The <br /> exposed dense/hard silty sand to sandy silt with gravel face was probed with a 3/8 inch <br /> pointed stainless steel rod and penetrations of less than an inch were achieved. It is our <br /> understanding that two benches will be excavated into the cut, each 3 feet vertical and 3 <br /> feet horizontal giving the hillside a more stable configuration. The bare soil will be <br /> vegetated once the benches are in place. <br /> Page 1 of 3 <br />