5521 1ST DR W 2016-01-01 MF Import

Geo�Engincen April 19, 1993 Grotechdical. Gcocnrirnnmemal and Geobgic Sercices . Selxt HOmes 237 Elm Stroet Ew�r�t, Washington 98203 Atcendon: Mr. Randy Clazk Building SUback Conditions Hanabrook Bevdopment Divisions III and IV Evaat, Wuhington File No. 2670-0OS-R06 '!be pucpose of this IGtu is W outline reduced building s�back conditions for location of homes at the Wps of slopes on Divisions III snd N of the Hanabrook Development ia Evae:t, Wuhinywn. 7bis 6as been discussed wIt6 Mr. Randy Clazk of Sele<x Homes, Mr. Pat McCourt of Univasal Brotaage Co�poration, and Mr. Michad Crowson of WdcH Pacific. We have obsaved no signs of instabiliry on nadve slopes in Divisions III and IV. Fill alopes on Divisions III and N wae oonshuctad with shuctural fitl coasisting of on-site granular eoils uada full-time moniWring of a qualifiod individual from our fi�m. 'ILe suvctural fill is keyed inW existing firm nadve soils and fill placed to achieve the final slope grades 6as bcen properly benched into existing native materials and compacted to 95 percent of MDD (mazimum dry deacity)according to the specificadons of the ASTM D-1557 test procedure. In addition,the lott are graded to slope away from the tops of slopes and all slopes have been covered with jute matting and hydroseeded for erosion proteciion. In our opinion, where slopes have been placed, compacted, graded, and vegetated as describod abnve, the minimum building setback distance can be reduced to 10 feet. 1'he setback distance is the horizontal distance measured from the front face of the footing to the face of the siope. It should be understood that if the setback distance is r��uced to 10 feet, the risks of losing access, reducing the d�• �r life of the foundations and having slope movement impact the house foundations are increa ��,�,: ;:�„r .. , i�,�: a�� .,. � � F�,:..,,�n,: u i ,��: ��.�;�,,a;� �: ,.�.�,i.�,�� r.��:�,�i.,,�;,n:�i �-:<:o•.e:,:c:.:�:�