1318 W MUKILTEO BLVD 2016-01-01 MF Import

GEOTECHNICAL ENGINEERING STUDY Proposed Single-Family Residence 131X Mukilteo Baulevard West Everett, Washington This report presents the findings and recommendations of our geotechnical engineering study for the site of the proposed residence to be located in Mukilteo. We were provided with a site plan and a topographic map. Shelter Form developed the plan, which is dated June 1, 2006. Based on the provided information and conversations with Shelter Form, we understand that ihe residence will be located near the middle of the property. A new driveway will enter the property on the upper, southeastern corner via an easement from an existing driveway to the east. The new driveway grade will be about 1 to 6 feet above the existing grade of the easement area. A cut of up to about 11 feet is proposed at the southem end of the property where a vehicle court is proposed. The garage of the residence will be located at the same grade as this court, elevation 205.5 feet. Two levels of the residence will step down the existing hillside to the east, with the lowest level at approximately elevation 1II6 Feet. It appears as though some cuts as high as 10 feet may be located on the southwestern comers of the lower levels. If the scope of the project changes from what we have described above, we should be provided with revised plans in order to determine if modifications to the recommendations and conclusions of this report are warranted. SlTE CONDITIONS SURFACE The Vicinity Map, Piate 1, illustrates the general loca:ion of the site on the western side of Everett. Mukilteo Boulevard West borders the northwestern side of the site; we consider the street to be located on the northern side of the site for this report. The somewhat rectangular site is located south and upslope of the street, approximately 20 to 25 vertical feet. The northern end of the site is neariy flat, obviously graded in the past, having a grade of approximately elevation 186 feet. The middle of the site rises relatively steeply upward to the south approximately 22 to 24 feet. Another flat area, obviously graded in the past, is located on the southern end. Some small retaining walls border this flat area. A smail shed is located at the southwestern corner of the site. Besides this shed, the site is basically undeveloped except for some small wooden steps and walls, and some small rockeries. The 20-foot driveway easement extends eastward from near the southeastern corner of the site. An existing driveway borders its eastern end. The easement area is landscaped and slopes up to the north with a vertical relief of about 8 feet. An 8- to 10-foot-tall rockery is located near its northern edge. The driveway/auto court for a neighboring residence to the noRh of the easement (east of the subject residential property) is located below the rockery with a grade of approximately elevation 183 feet. In addition to the residence located to the north of the easement area, there is also one to the south. A small concrete retaining wall is located along the adjoining property line that supports a yard on the southern property. The yard grade is approximately elevation 200 feet. The residence on the southern property is located about 10 feet south of the easement. A residential property is located upslope and south of the subject residential property. It has an approximate 6-foot-tall retaining wall Iocated about 10 to 15 feet south of the subject property. Another residence is j .� ' GEOTECH CONSULTANTS.INC.