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r;; �-.. , <br />�. <br />� <br />C�] C�>+1 � <br />A�1x <br />>Hxc~i� <br />H x� <br />�! c� <br />H� <br />� H'{1 <br />V1 H <br />xp <br />� H Cy <br />�/��g <br />y� V �❑ <br />> H [� <br />y <br />t I—� H <br />g `� <br />�d� <br />��+ <br />Z H t�i� <br />H O fN <br />� P , � <br />DA\'ID L. NELSON AND ASSOCIATES, INC. <br />ConciJting Enginecring Gculogy <br />March 20, 1990 <br />Project No. 2890 <br />Page 2 <br />about the 4900 block on the west side of xarbor i.ane, in Everett, Washington. <br />Presently, the site is undeveloped, but occurs vithin an existing residential <br />development, and just north of an existing residence. Vegetation within the <br />lot area consists primari'yo uf qrass and blackberry vines, and small deciduous <br />trees. Topographically, the site is relatively flat lying adjacent to Ha:bor <br />Lane, but then begins to slope qently to moderately, and then steeply towards <br />the west and north. 't'he current plan is to ccnstruct a portion of the <br />proposed structure on the moderate and steep slopes. <br />SOILS CONDITIONS <br />The subsurface soils =tratigraphy can best be seen on the enclosed test pit <br />logs. In general, t:�e site was found to be underlain at depth by dense <br />glacial till depo�its, with local areas of surficial artificial fill. <br />The basal nat'_ve deposits encountered throughout the evaluated site area <br />consist of grey, dense, poorly sorted silty sand with 9ravel, considered <br />glacial till. The basal glacial till was found below about 3.5 to 5.5 feet <br />below 9rade across the proposed building area. Overlying the basal qlacial <br />till are deposits consistin9 of grey-brown, medium dense, gravelly silty sand, <br />considered weathered glacial till. This strata was found to vary from about <br />1 to 2.5 feet thick. <br />Native surficial soils, consisting of about 1.2 feet of dark brown to grey, <br />loose, silty fine sand with roots was encountered throughout most of the site <br />area. We found about 0.5 feet of fill over this in TP-3. The neighbor to the <br />south has placed fill on the slope, some of which appears to have encroached <br />on your property. This fill appears to consist of black, brown, grey and dark <br />brown, loose, gravelly silty sand, varying amounts oE organics and some <br />debris, etc., considered uncontrolled fill. The nei3hbor appears to have <br />placed this fill to increase his yard area. We did not specifically explore <br />the fill areas �bserved. At the time of our exploration, the neighbor had <br />recently pushed additional fill on to the slope, and indicated that it "just <br />happened", implying that he had it pushed over the slope regardless of the <br />