5419 1ST DR W 2016-01-01 MF Import

Geo��ngineen ^ ' April 19, 1993 Geo�cchnical. Gcoem�imnmental and Geologic Ser��ices Seled Homes 237 Elm Strat Everdt, Washington 98203 Attention: Mr. Randy Clark Building Setback Conditions Hanabrook Development Divisioat III and IV i, Evaeu, Wuhington File No. 2670-005-R06 1be puepose of thu letta is W oudine reduced building setback conditions tor locadon of homes u the tops of slopes on Divisioas III and N of the Har,abrook Developmeat in Evereu, Washinywn. 'lbis hu bcea c+isca�ssed with Mr. Randy Clazk of Select Homes, Mr. Pat McCouR of Univeraal Brotaa�e Coeporuloa, and Mr. Michael Crowson of W6�H Pacific. We have obsaved no aiYoa of insqbility on nuive slopes in Divisiona II[ �nd IV. Fill slopea on Divisions III and IV wae conswcted with atructural fili masisting of on�ite granular soila unda tull-time monitoring of a qualifiod individud from our firm. 'Ibe strucwral fill is keyed inw exiscing firm aadve soils and fill placed to achieve the final slope grades 6ss been properly benched into existing native mataials and compacted W 95 peccent of hIDD (maximum dry density)accoMiug w the spacifications of the ASTM D-1557 test procedure. In addition,the lots are graded to slope away from the tops of slopes and all slopes have been covered with jute matting and hydroseeded for erosion protection. In our opinion, where slopes 6ave been placed, compacted, graded, and vegetated as describod above, the minimum buildiag sCback distance can be reduced to 10 feet. 1he setback distance is the horizontat distance measural from the front face of the footing to the face of the slope. It should be understood that if the setback distance is roducod to 10 feet, the risks of losing access, reducing the design life of the foundations and having slope movement impact the house foundations are increased. ��r„Fn�un•cn.Inc •;I�� ;.Ilh :ln�nm•\.F: ni�hnand.11�d `hn;: �i�;c��I1�qIC1_tN�i c��.n�ni.i f.lA I_INq�P�Ull:n