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- `� <br />cco�linginccr� <br />Selxt Noma <br />237 Eim Stral <br />Evxdt. Washington 98203 <br />Aa'nGon: Mr. Randy Cluk <br />April l9, 1993 b��nrr�inicu�. <br />4vuemironmenlal anJ <br />bruingir Fervlrce <br />Building Saback Conditions <br />Nanabrook Development <br />Divisioas IIf and N <br />Evaett, Wuhinglon <br />File No. 2676-0DS•R06 <br />7Le purpose ot tAis IGtir Is W outlioe roduced building adback woditions for Iocatioo o( <br />homes u the Wps of alop�s on Divisioas ID and ry of �he Hanabrook Development in Everea, <br />Wuhinatoo. 'Ibis Au ban disa�ssed witb Mr. Randy Clark of Sde4 Homcs, Mr. Pat MeCuun <br />of Uoivua�l Brokasge Co�poruion, ud Mr. Michad Crowaon o[ W&}i Puific. <br />We hrve obsmed no aigas of iastabpity oa ouive alopes in Divisiona ID �nd N. Fill <br />alopea on DivitMm m �nd ry wae coastrvcted with atructural fill conaisriog of onsite granular <br />soila unda fulltime monitoriog of a qudified individual from our firm. 'Ibe swctural fill is <br />keyed imo existin8 fum mtive soils end fili placeG to echieve the finil slope grada 6u ban <br />properly benched into existing nuive materials and compaaed to 95 percwt of MDD (matimum <br />dry deraity) ucording w the specifications of the ASTM D-1557 tett procedure. In addition, the <br />lott ue gr�ded to slope away from the tops of slopes and all slopes have been covered with jute <br />matting and hydroseeded (or erosion protection. <br />In our opinion, where alopes have ban placed, compaaed, graded, and vegeutal ac <br />ducribed above, the minimnm builf' .g saback distance can be reducod to 10 fed. Th; saback <br />dLsunce is the horizontal distance m:asurod (rom the front face of ttm footing to t6e (ace of the <br />alope. It s6ould be uderstood that if Ihe adback dishnce is nduced to 10 teet, the risks o( <br />lusing aceess, reducing the design life of the foundations and havinq tlope movement impact the <br />house foundations are increazed. <br />ia,�lna�n���, m, <br />e �I:,ih 1��u... � f <br />na::���•uC U � �� _ <br />uqde�nel2�v,iy< ..� <br />Ln ibois,l oo;n <br />