6023 4TH DR W 2016-01-01 MF Import

9 Geo�En�ineers Seled Homes 237 Elm SueU Everat, Wuhington 98203 Attention: Mr. Randy Clazk Aptil 19, 1993 Gcotcrhnical. Gcocm�ironmrnlal and Building Setback Conditions Hanabrook Development Divisions I!I and N Evuett, Wuhington File No. 2670-0OS-R06 Gcologic ticrcices 'Ihe purpose of this letta is to outline reduced building setback conditions for locadon of 6omes u the Wps cf slopes on Divisioas III and N of the Hanabrook Development in Everett, Wac6inywn. lbis i�a.; been disnused wit6 Mr. Fandy Clazk of Selea Homes, Mr. Pat McCourt of Univaaal Brokerage Ccrporation, and Mr. Michael Crowson of W&H Pacific. We have observed no aigc�c of instat+ility on native slopes in Divisioas III and N. Fill alopes on Divisions III and N wae coattructed with stcuctural fill consisting of on-site granulaz aoils unda full-time moniwring of s qualified individual from our firm. 'Ibe swctural fill is keyed into existing firm nadve soils and fill placed to achieve the final slope grades has been p:operly E::nched into existing native m:aerials and compaMed to 95 percent of MDD (maximum dry denciry) according to the specificadons of the ASTM D-15S7 test procedure. In addition, the lots are graded to slope away fr�m the tops of slopes and all slopes have been covered with jute matting and hydroseeded for erosion protaction. In our opinion, where slopes have been placed, wmpaned, graded, and vegetated as described above, the minimum building setback distancr, can be reduced to 10 feet. 'llie setback distaace 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 foundations and having slope movement impact the house foundations are increased.