4712 DARLINGTON LN 2016-01-01 MF Import

i � Scou Pcarson Septembcr 27, 3007 1'age 2 Our services have been provided on the basis of a revie�� of esisting infomiation. ceologic reconnaissance of the site and adjacent arca on Septembcr 18, 2007. discussions ��ith you regardine t�:� proposed devclopment, and our experience. SITE CONDITIONS The suhject property is located at 4712 Darlington Lane in the Darlin�-ton neighborhood of Everett, Washington, as shown on the Vicinity Map (Pigurc I). h is situated at an cic��ation of approsimately 200 feet(msl)on n ridgetop overlooking Possission Sound. The eastern portion of the lot consists of an upland arca that includes the existing residence. The western portion of the lot con�ists of a steeply sloping area that descends to a small creck nc�r the westem property boundary. Youre�isting residencc is located�vithin the eastem,gently sloping upland p:�nion of thc property. The area surrounding the house is veget�ted mainly by erass. with some shrubs. 'Che westcrn portion of the property consists of a steep slope, most of��hich is inclined steeper than�10 percent. and is vegetated mainly by brush and tmes. A distinct top of slope separates the upland arca from the stecp slopc area. �1'e have indicated the top of that steep slope on thc Sitc Plan(�igure 2. based on a dra�vinc that you provided to us); as sho��m,thc top of thc steep slope is locatcd approximately 1� fcet Crom the southwest (closest) corner of the existing liouse, and approximately 4� fect from the south��est (dosesQ comer of the proposed addition. Gcologic conditions ��ithin and adjacent to the site ��•erc evaluated by surti�cc reconnaiss�nce and shallow,hnnd-dug e�plorations. A 3.� �eet deep hand auger exploration in a planting area located�vithin the arca of the proposed addi+ion encountered medium dense to dense glacinl aJ��ance out��ash sand (Qva) immediately bcle�� the topsoil. Glacial out��ash sand ��as also oUscrved �vithin a planting area located along the top of the steep slope ��est oi'thc e�isting residence. 'I'his is consistent with esisting gcologic mapping of this area(.lames P. Minard. 1952,llistribution and Description of Geolocic Units,Mukilteo Qu1d, Nashincton: USGS Map Mf-1�135),e�cept that the cappinc layer ofglacial till does not appcar to he present within the sitc. That map indicates that silty soils(Qtb)underlie the sand along thc slope adjacent to the creek. thoueh nonc ��cre observed during our site reconnlissance. Wet soils and vegetation within the lower portion of that slope suggests the lo��er portion of the slope is uuderlain by silty soils. No evidence of groundwatcr seepaec, surl'ace water runoff or erosion �vas obsen�ed within the upland poriion of the site or within the upper portion of the slopc. a�� 7505 West Lake Sammamish Parkway Northeast Redmond,Washington 98052 425•882-4850 wvnv.�ubbs.Co