6522 WETMORE AVE 2025-08-19 - Laserfiche WebLink

GEOTECHNICAL INVESTIGATION EVERETT, WASHINGTON October 28, 2019 i.o Introduction L I COBALT GEOSCIENCES In accordance with your authorization, Cobalt Geosciences, LLC (Cobalt) has completed a geotechnical investigation for the proposed residential development located at 6522 Wetmore Avenue in Everett, Washington (Figure 1). The purpose of the geotechnical investigation was to identify subsurface conditions and to provide geotechnical recommendations for foundation design, stormwater management, earthwork, soil compaction, and suitability of the on -site soils for use as fill. The scope of work for the geotechnical evaluation consisted of a site investigation followed by engineering analyses to prepare this report. Recommendations presented herein pertain to various geotechnical aspects of the proposed development, including foundation support of the new buildings and new pavements. 2.0 Project Description The project includes construction of three new single-family residences or two duplexes within the property. The site layout has not been finalized. Anticipated building loads are expected to be light to moderate and site grading will include cuts and fills on the order of 4 feet or less. Stormwater management will include infiltration devices, if feasible. We should be provided with the final plans when they become available. 3.0 Site Description The site is located at 6522 Wetmore Avenue in Everett, Washington (Figure 1). The property consists of one nearly rectangular parcel with a total area of about 0.38 acres. The western portion of the property is developed with a residence and detached accessory structures. There is a driveway that extends onto the property from the east. The remainder of the property is undeveloped and vegetated with grasses, bushes, and sparse trees. The site slopes downward from west to east at magnitudes of 5 to 10 percent and relief of about 15 feet. There are local 2 to 3 feet tall landscaping walls west of the residence. The site is bordered to the north, west, and south by residential properties and to the east by Wetmore Avenue. 4.o Field Investigation 4.1.1 Site Investigation Program The geotechnical field investigation program was completed on October 17, 2019 and included excavating and sampling two test pits within the property for subsurface analysis. PO Box 82243 Kenmore, WA 98028 cobaltgeoRgmail.com 2o6-331-1097