5416 1ST DR W 2016-01-01 MF Import

Geu�Engineei;� April 19, 1993 Geotechnical. frocncimnmental and Gcologic ticn�ices Select Homes 237 Elm Stred ' Everett, Washingtan 98203 Attention: Mr. Randy Clazk • Building Setbacic Conditions Hanabrook Devdopment Divisioas III and N Everett, Wuhington File No. 2670-005-R06 7he purpose of this later is W outline reduced building setback conditions for locadon of 6omes at the tops of slopes on Divisions lII and N of the Hanabrook Development in Everett, Wathinywn. ltiis has been discuss�d with Mr, Randy Clark of Select Homes, Mr. Pat McCourt of Universal Brokasye Co�poration, �nd Mr. Michad Crowson of W&H Pacific. We Lave obsexved no sigas of irstabiliry on nadve slopes in Divisioas III aad IV. Fill siopes on Divisioac III and IV wae cons;iucted with atrvcturai fiii consistiag of on-site granular soils under full-time mouitoring of a qualified individual from our firm. 'Ibe strucwral fill is keyed into exisdng firm native soils and fili placed to achieve the final slope gad�s has bcen propedy benched into eacisting native materials and compacted to 95 percent of MDD (m�.ximum dry density)acwrding to the specificadons of the ASTM D-1557 test procedure. In addition,the lots are graded to slope away from t6e tops of slopes and all slopes have becn wvered with jute matting and hydroseeded for erosion protection. In our opinion, where slopes 6ave been placed, compacted, graded, and vegetated as described above, the minimum building setback distance can be reduced to 1D feet. The setback distance is the horizontal distance measured from the front face of the footing to the face of the slope. It should be understood that if the setback distance is reduced to 10 feet, the risks of losing access, reducing the design life of the foundatior�s and having slope movement impact the house foundations are increazed. ��, : ..:�,��• :� , ":� :<�,r� ��,u�� h�,I:�,,,:�,1 U�. .,.��:_ .�.:v,hi�ri ,_ , � �,. i;�.:iwqy�� , nqi �._.c . . ,.... .