5016 HARBOR LN 2016-01-01 MF Import

� � � � � � � , �� DAVID L. NELSON AND ASSOCIATES, INC. Consulting Engineering Geology October 27, 198H Project No. 13288 Page 4 doanslope. This is a normal condition found within the area. and is gene��ally considered chronic during the nornially wetter periods of the year. Slope Stabitity We observed the steep slope area belav the top-of-slope to determine general slope stability considerations, as requested. Me observed that the upper elevations of the slope just betav the top-of-slope are underlain by dense and stable glacial till soils, which are then underlain by dense, granular advance glacial outwash sands and gravels within the mid-slope area. The laver portion of the slope appears to be underlain by dense, silty fine sand and sandy silt, considered the interglacial Whidbey Formation. Vegetation on the slope area appears to indicate minor surface creep. This is a norm�l condition within steep slope areas underlain by dense glacial soils. Based upon our obs+rvations of the slupe and top-of-slope area, ►+e Mould consider the area relatively stable. Conclusions/Opinions Based upon our explorations and observations performed within the site area, we are of the opinion that development as proposed can be perfornied. provided that recommendations as presented herein are utilized for construction. In general, we are of the opinion that residence foundations shoutd be placed within the dense native basal soils, a minirium building setback be established for residence placement fran the top-of-slope, adequate drainage be provided around the development area, structural fill be utilized within oroposed backfill area�, and that inspection of the earthwork phase of development be perfornied. Recomnendations Residence foundations would best be performed through placement directly upon