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Gcu�lingin�en <br />Selea Homa <br />237 Elm Strat <br />Hvaat, Wuhington 96203 <br />Aticntioo: Mr. Ruidy Clak <br />A(�ril 19, 1993 frntrdniicul. <br />Gearm irnnNenlal and <br />Gr�dn4ii tien ke. <br />Au�'ding Saback ConLitions <br />Hanabrook Development <br />Divisions iIl and R' <br />Evuett, Wuhington <br />File Na 2670-005-R06 <br />'ILe purpose of •his Ictter is lo ouUine reduced Auilding setback conditions for location of <br />homes u the tops of slopes on Divisions III and IV o( the Hanabroo� Developmeni in Everett, <br />Wazhiagton. This has been discussed with Mr. Randy Clark of Select Homes, Ma Pat McCoun <br />of Universai Brokaage Corpora[ion, and Mr. Michad Crowson ot W&H Pacific. <br />We 6ave obsmed nn aib�ns of instabiliry on nstive slopes in Divisioas ID�od ►V. Fill <br />slopes on Divisioas III and IV wve construaed with swctural fill wnsisting of on-site granular <br />soils undcr [ulI-time mon:ioring ot a quelified individual from our firm. 7Le sWccural fill is <br />keyad into existing firm native soils and fili placed to achieve the final slope grades haz been <br />propaly benched into aisting native maierials and mmpaMed to 95 perecnt of MDD (maximum <br />dry dentity) according to ihe spxifications o(ihe ASTM D-1557 test procedure. In addition, the <br />lots are graded to slope away trom the tops of slopes and all slopes have bcen covered wi�h jutc <br />matting and hydroseeded for erosion protenion. <br />In our opinion, where slopes have been placed, companed, gradod, and vegetated az <br />described above, the minimum buildmg sdback disiance can be reducai to 10 feet. The setback <br />distance is the horizontal distance measurod from the tront face of the tooting a the face o( the <br />alope. It should be understood that if the setback distance is reduced to 10 @et, the risks of <br />losing accaas, reducing ihe design life of the %undations and having slope movement impact the <br />house foundations are incrcaced. <br />.,i�,�..., ,�. <br />.��i+�� ...�.���t <br />..�:nn�n,! �a � ,...,._ <br />.,,q�inn��_ ...i�... � <br />'..nCa,�.�,�„� �, <br />