4927 23RD AVE W 2016-01-01 MF Import

; DAVID L. NELSON AND ASSOCIATES, INC. � Consulting Engineering Gtology � September 19, 1989 Project No. 12489 � Page 4 slope and steep slope indicate some signs of downslope leaning and upslope � "kneeing", indicating , �e evidence of surface soil creep downslope. We would consider the top-of-slope and steep slope area subject to periodic � shallow surface slides. No large scale landslides were noted within the sloping portion of the site. 1 ':ONCLUDING OPINIONS i Based upon the explorations, observations and review performed within the site � area, we are of the opinion that development as proposed within this area can Ibe performed, provided that recommendations as presented herein are utilized for development and construction. We understand that a lot line adjustment is � proposed along the westerly side of the lot area, to increase the size of the lot area, and allow for residence placement. JGeneral development guideline recommendations include a minimum building setback of 20 to 25 feet from the top-of-slope using foundations placed into Ithe compact basal native soils, protection of the setback, top-of-slope and slope areas, and drainage control . JRECOMMENDATIONS � Building Setbacks After specific evaluation of this lot area we conclude that the structure could be placed within the lot area west of the proposed building setback line 1 as shown on the enclosed location map. The recommended building setback is 20 feet from the located top-of-slope, using foundations pla;:ed into the dense � native basal fine silty sand, located about 5.5 .aet below grade, in TP-1 & TP-2. A 25 foot building setback should be used for foundations placed within ( the fractured silty fine sand native soils, located about 4 feet below grade, in TP-1 & TP-2. IDevelopment within the setback area should be limited. Absolutely no filling should be performed within the setback, top-of-slope or slope areas. The � existing debris fill along the top-of-slope and slope areas should be removed, 1